science fair experiments using eggs

20+ Fun Science Experiments with Eggs

• July 4, 2020
• Science Experiments

Eggs! Sounds delicious, right!? But eggs are not only used to show our culinary skills in the kitchen or to satisfy our taste buds but to our surprise, they work great to do science experiments that every young and little scientists in your home needs to try. Many simple, easy, and fun experiments are possible to do with eggs.

Here in this post, we would like to help you find various easy, simple, and fun egg science experiments by compiling an exhaustive list of ‘Egg Science Experiments’. You just need to follow our Easy-to-Follow directions given below and explain to your little ones who begs you to repeat these experiments once they get to know the magical transform of the egg, which is done in the below mentioned egg science experiments. So, have look and enjoy!!

1. Colorful Rainbow Rubber Eggs

Simple yet awesome colorful Rainbow Rubber Eggs. You can make this with available household items like eggs & vinegar – a must try experiment for kids at home. Check out this egg experiment here.

2. Egg in a Bottle

Description: The title puts a big question mark on your face but believe, it is so easy and simple to perform and enjoy the magical results of this experiment.Egg in the bottle is a pretty cool experiment to the kids of all ages. Kids below 5 years can enjoy the experiment by watching the fascinating results but the kids above five years can actually understand the science behind the experiment. Though the experiment sounds simple and easy but it is absolutely not ideal to choose for any kind of science fairs.

You can find the complete and detailed description about the Egg Science Experiment by clicking on the link attached to the tittle in the same sentence.

3. Make an Egg float

Description: We knew that the eggs sink to the bottom and our kids also might have observed this. But do the eggs float? Want to know the answer!? Then you must perform this easy and very simple experiment to show your little ones that the eggs do float. Kids below 6 years will be more excited to watch the exciting results of floating egg and would definitely ask to repeat the experiment. Whereas kids above 7 years can enjoy as well as understand the simple science behind the magic trick which makes the egg float.  

Click here to find a detailed explanation of ‘ Make an Egg Float ’ experiment.

4. Egg Shells as Teeth

Have you ever imagined of an experiment with an egg shell? Most of you says, ‘NO’! Hope I am correct!! In the same way, we never thought of an experiment with eggshells and our tooth. Eggshells represent human teeth since these shells are made from the chemicals that form tooth enamel. This experiment help kids of all ages learn about importance of maintaining tooth health which is a common dental issue among now-a-days generation children. In addition, this experiment is best suitable for early year’s children because they learn why it is important to brush their teeth and after the experiment they find brushing activity fun and interesting!!

Here is the source for this easy and fun experiment: Tooth Decay Experiment with Egg Shells

5. Egg Science Experiment with Vinegar

Make your children surprise with this magical experiment of Egg in Vinegar solution. This experiment does not take much time of your child’s leisure time. In fact, this neat activity helps your child to learn simple science with few ingredients either at home or at school. Sounds exciting right, I believe you and your child would have a nice learning time with this amazing experiment with egg.

You can find the detailed experiment here, just click here: Egg in Vinegar

6. Egg in Coke Science Experiment

Coke is the highly consumed drink among children of all ages who prefer so much junk over healthy drinks and food. So far, you may have heard and performed many experiments with coke but this simple and fun experiment is more interesting!! Want to know why!? Just gather your children and perform this simple activity at your home, so that your children will also get to know about the surprising results of this experiment. Have a try!!

Have a look at the complete experiment and observe the results here: Egg in Coke Science Experiment

7. Eggs and Salt Water Science Experiment

This is the best experiment to tell your children about the egg’s density and also helps you to demonstrate your kids about what happens when an egg is added to the salt solution. Does an egg float or sink in salt water!? Get the answer to this question by performing this easy and fun experiment!! Happy experiment!

How does the Egg and Salt Water Science experiment works? Just click here to find the complete experiment details, directions, and results: Eggs and Salt Water Science Experiment

8. Science Experiment with hard boiled eggs

Experimenting with hardboiled egg sounds silly but there is a bit of interesting and simple science involved in this experiment. Do it with your kid and know the interesting results of this experiment. Pre-schoolers mostly enjoy this experiment which improves their motor skills.

Here the source link to find the detailed experiment description: Science Experiment with hard boiled eggs

9. Egg Drop Science Experiment

This experiment is involved with a lot of fun and a simple science! Kids of all ages find it as a magic trick but it is actually a super fun STEM activity for students and pre-schoolers as well. Check out the link here to find how exactly the experiment works with your students or children. Click here for Egg Drop Science Experiment

10. The Shrinking Egg Science Experiment

This super fun experiment is considered as another continuous and further step experiment to the ‘Egg in Vinegar experiment’. This experiment would be so informative and perfect to show preschool class kids. Kids would definitely be amazed to the fascinating reactions of the egg at the end of the experiment! Just give it a try.

Browse the link here to get the complete information on experiment with the egg. Click here .

11. Dinosaur Eggs Fizzy Science Experiment

Pre-schoolers are always in love with tiny animal toys and among them dinosaurs will always be their fun topic and toy. In this experiment your little ones will definitely become more excited and interested to explore dinosaur egg science experiment.

Get the detailed information about the super-fun experiment, just click here: Dinosaur Eggs Fizzy Science Experiment

12. How strong is an egg shell?

There are many shapes in this world and the shape of a structure defines how strong it is!! Does eggs, which actually seem fragile, hide any such shape inside it!? This would be a great experiment to show your kids about shapes and their strengths. Find out why shapes are taking the priority in this experiment by trying this at your home or school or science fair projects.

You can find the experiment complete guide at this source, just click here: How strong is an egg shell?

13. Oobleck Egg Science Experiment

Have you ever came across the word ‘Oobleck’!? Hopefully not!! This is a magical ingredient to do an awesome and super fun experiment with eggs. This experiment would be a great classic student challenge to perform this activity. Does an Oobleck protects egg from breaking!? For the results, just click here to know the complete details of this simple Oobleck Eggscience experiment .

14. Crystal Egg Geode Science Experiment

Want to bring a fun twist to your experiments with egg science!? Then this is the perfect one that makes your egg science experiment wonderful and beautiful. Also this is a safe and fun experiment for the pre-schoolers since this is a non-toxic and can be done in very little time. So, go ahead with the fun and kid-friendly egg science experiment.

Check out the fun Crystal Egg Geode Science Experiment here!!

15. Walking on Eggs Science Experiment

Walk on eggs!? Yes, it is a bit surprising!! With this experiment, kids will get to know the eggs a bit more including little science magic, interesting investigations, and many more. This is another fun egg science experiment that keeps children engaged for hours. Pre-schoolers will definitely enjoy the egg science activity whereas the older kids will spend a quality time while performing the experiment and analyses the display of the results. So, why don’t we give it a try!

Here is the link attached to know the complete instructions about the experiment, walking on Eggs

  16. Comparing Eggs- Floating Eggs Science Experiment

Do you want your kid to involve, discover, and explore more about egg experiments!? Then, this is the perfect one to set up at your home. Also, you will find this experiment is a great way to get your children involved and analyses their findings to the situations in reality. Great experiment! Try it with your kiddos.

Find the instructions and other complete details of the experiment here: Comparing Eggs- Floating Eggs Science Experiment

17. Experiment with eggs in different liquids

Another egg science experiment that allows children to learn about three concepts at once. This experiment takes 24 hours’ time to see the end results but definitely it is worth to wait for the results because it makes a great visual experience. Also, adults can make use of this experiment to explain their kids a few things about the ingredients used in the experiment as well as works as a good science fair project. “DISSOLVING, EXPANDING, BOUNCING EGG SCIENCE EXPERIMENT” is the alternative name to this experiment.

Do you want to know how the experiment works!? Then, you must definitely find click here to get the details of the experiment: Experiment with eggs in different liquids

18. Silver Egg Science Experiment

This is such a beautiful simple science project or experiment and best suits to practice Easter Science Experiments and Easter STEM activities. Children can perform this experiment anywhere like schools classes, home, etc. since it requires less time with a very less ingredients. Lower grade kids must be supervised by an adult while performing this activity.

Click here to see how to do the Silver Egg Science Experiment

19. Egg STEM Zip Line Science Experiment

Many kids out there have had the experience of zip line travelling’s!! But do they ever think of egg parachutes or eggs travelling using zip lines? For children this would be a great experiment where kids learn how to set up an investigation for a fair test and also enjoys this fun experiment. Easy to perform and perfect for experiencing some EASTER fun.

Egg STEM Zip Line Science Experiment Consider this source to get the complete details of the experiment.

20. Volcano Egg Science

Fun science suitable for all ages!! Kids experience an awesome science and craft in one experiment. With a very few ingredients in your kitchen, kids can enjoy lots of fun and this fun science and craft activity is perfect for toddlers, pre-schoolers, and older.

Want to try this experiment with your kids!? Then get to know about Volcano Science Experiment here.

21. Growing Seeds in Eggshells for Spring Science!

 Children of all ages, Grab your eggs, empty it, and make the eggshells ready for growing seeds in eggshells!! This is a great experiment through which you can make your children know about earth science and different stages of seed growth.

Explore the cool science of ‘ Planting Seeds in Eggshells ’ by clicking on the link attached here and make your kids engaged in learning plant science.

Kids of all ages can do these simple science egg experiments either at home or school while enjoying the magical results. For the egg-citing results, kids use a very few ingredients from the kitchen in addition to an egg. Kids also love to complete the experiments with egg since they are simple, easy, and fun. Learning simple science while performing these activities with eggs is an added bonus to their little brains.

By performing the above mentioned experiments kids will completely get the simple science hidden in the eggs in an excellent way!! In addition, most of the above mentioned projects are simple, easy to perform, super fun, and quick. Hope you all have got enough information on the list of simple and super fun Egg Science Experiments. Give it a try to enjoy super cool egg science experiments.

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16 Best Egg Science Experiments

We’ve compiled a list of safe, egg-cellent and egg-citing egg experiments that can be easily conducted in school or at home.

This assortment of experiments, suitable for learners across all age groups can be done with basic materials, making them perfect for classroom settings. These hands-on, educational experiments will not only enhance your knowledge of biology and chemistry but will also foster a deeper appreciation for the wonder of everyday objects.

Whether you’re a teacher looking for a fun science project or a student looking for a new experiment to try, these fun egg experiments are sure to inspire and educate!

1. Egg in A Bottle

The egg in a bottle experiment is a classic and simple science experiment that can help students understand the concept of air pressure.

This experiment demonstrates how changes in air pressure can cause objects to move, and it can also be used to explore other scientific concepts, such as thermodynamics and gas laws.

Learn More: Egg in a Bottle

2. Crack the Egg Underwater

The crack the egg underwater experiment is a simple and fun way to teach students about pressure and material properties.

Since the egg is submerged in water, it doesn’t break. This experiment can help students understand the concept of pressure and how it can affect materials.

3. Make an Egg Float

This experiment can teach students about the concept of density and how it relates to buoyancy. It can also be used to discuss how different materials have different densities, which can affect their behavior in water.

Learn more: How to Make an Egg Float

4. Glowing Egg

The glowing egg experiment is a fun and unique way to teach students about chemical reactions and the properties of light. The glowing egg experiment is a fun and educational way for students to learn about science and can inspire their curiosity about the world around them.

5. Dissolving, Expanding, Bouncing Egg

The Dissolving, Expanding, Bouncing Egg experiment is a fun and educational experiment that allows students to explore how materials can change when they are exposed to different substances.

Learn more: Dissolving, Expanding, Bouncing Egg

6. Make a Rubber Egg

This experiment can teach students about chemical reactions and how they can alter the properties of materials. The rubber egg experiment is a fun and engaging way for students to learn about science and can help them develop their experimental skills and scientific understanding.

7. Silver Egg

The Silver Egg experiment shows the chemical reaction between vinegar and an eggshell in an easy fun way.

This experiment is an excellent approach to teach children or students to basic chemical ideas and to stimulate scientific interest and investigation.

8. Egg Strength Experiment

One of the most popular eggshell strength experiments involves testing the load-bearing capacity of eggshells by applying weight to them until they crack.

This experiment is a great way to learn about the structure of eggshells and the factors that can affect their strength

Learn more: Egg Strength Experiment

9. Egg Balancing Experiment

Try to balance an egg on its end in this easy experiment. This is an excellent way to encourage children to think creatively and try out various strategies.

10. Egg Tower

The egg tower experiment is a fun and creative activity that challenges you to design and build a tower out of eggshells.

This experiment is not only a great way to test your creativity and problem-solving skills, but it also provides an opportunity to learn about the structural properties of eggshells and how they can be used to create stable and durable structures.

11. Naked Egg

The naked egg and vinegar experiment is a unique and exciting scientific experiment that involves putting the egg in a jar and observing how it reacts to being soaked in vinegar.

12. Egg Drop

The egg drop experiment is a classic science experiment that challenges you to design and build a contraption that can protect an egg from breaking when dropped from a height.

13. Egg Geodes- Crystal Growing Science

The Egg Geodes – Crystal Growing Science experiment is a fun and educational experiment that allows you to create beautiful crystal “geodes” inside real eggshells.

Learn more: Egg Geodes- Crystal Growing Science

14. Eggshell Planters

The egg planters experiment is a unique and creative way to repurpose eggshells and create a mini garden. This experiment involves planting small seeds inside the eggshells and watching as they grow and develop into plants.

It’s a fun and engaging activity that provides an opportunity to learn about gardening, plant growth, and sustainability.

15. Eggshell Mosaic

The egg mosaic experiment is a fun and creative way to use eggshells to make a colorful and unique piece of art. This experiment involves breaking the eggshells into small pieces and arranging them into a mosaic pattern on a piece of paper or canvas.

16. Tooth Decay with Eggshells

This experiment will look at the effects of various beverages on our teeth. This can be done by using hard-boiled eggs, which contain calcium and other comparable chemical components.

Similar Posts:

• 68 Best Chemistry Experiments: Learn About Chemical Reactions
• 37 Water Science Experiments: Fun & Easy
• Top 100 Fine Motor Skills Activities for Toddlers and Preschoolers

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Egg Science Experiments using Real Eggs

Categories Science Experiments

If you love Easter science experiments and Easter STEM activities , then you won’t want to miss this list of egg science experiments using real eggs. You don’t have to wait for Easter to try these egg science projects, but they are a lot of fun during the spring!

No matter what age of children you are working with, you’ll find some fun egg science experiments using real eggs here!

Keep reading and find out what kids can learn just with a humble egg. These make fun science fair projects with eggs!

What are Egg Science Experiments?

An egg science experiment is an experiment that uses eggs. Pretty simple, right?

But there is more to egg science than just learning about the parts of the egg, or learning the chicken life cycle. Eggs can be tools to learn about all sorts of scientific concepts!

Use these egg experiment ideas to spark lessons on chemistry, gravity, physics, engineering, biology, density, light refraction, and a whole lot more!

There is no end to the science learning fun when you’re using an egg.

Add these egg science fair projects to your lessons during the spring, Easter, or whenever you want to try a quick science demonstration.

And best of all, most of these egg science experiments take just minutes to complete, so they can be done in just one or two class periods.

And these ideas can become the basis for science fair projects and egg experiments for the science fair!

What you need to complete science projects with eggs:

You’ll need a few supplies for egg science activities. Here is a list to get you started:

Fun Egg Science Fair Projects to Try

Try these fun egg science experiments for kids. There are experiments for preschoolers, elementary kids, science fair projects, and egg dyeing!

There are so many fun ways to learn with real eggs.

If you want more Easter fun, don’t miss our Peeps STEM activities and Peeps science experiments. These rainbow science experiments are also tons of fun!

Fun Egg Experiments for Preschoolers

These egg science experiments are perfect for preschoolers.

Make Fizzing Easter Eggs inside of egg shells!

Learn about gravity in this fun Egg Drop Gravity demonstration.

Learn about the strength of eggshells in this project! How Strong are Eggshells?

Science Experiments with an Egg

Elementary students will have a blast with these egg experiments!

Make Rainbow Naked Eggs ! They are so colorful and fun!

You can learn about Osmosis for Kids with this egg experiment.

Transform eggs into crystals with this Egg Shell Crystals project.

Egg Science Fair Projects

Bring the egg fun to the science fair!

Why does your egg look silver? Find out in the Silver Egg Science Experiment .

Grow Eggshell Gardens and learn about plants!

Try the classic Egg Drop STEM Challenge and keep your eggs from breaking!

Do the Floating Egg Experiment and see if eggs will sink or float!

Egg Science Experiments for Kids

Don’t forget to explore science when dyeing Easter eggs!

Have you tried Exploding Naked Eggs ? It’s a fun way to make eggs spectacular!

You can dye the inside of eggs when making Pickled Eggs .

Try Volcano Egg Dyeing and mix chemistry and reactions with your Easter fun!

Try this fun complete science project: What is the best egg dyeing method?

If you like these egg experiments for school, check out our list of

• Easter STEM activities
• Easter science activities for preschool
• easter science experiments for kindergarten
• Easter science activities for elementary
• Easter science projects for middle school

And you’ll also love these Peeps candy science experiments and Peeps STEAM activities.

Share this project with a friend!

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Science Experiments

Floating Egg Science Experiment

Can you make an egg float in water? In this simple science experiment, we take just a few minutes to test the laws of density and discover just how easy it is to make an egg float!

Below you’ll find detailed instructions and our demonstration video as well as the scientific explanation of “why it works.” We’ve also included a more ideas to explore the concept a bit further.

JUMP TO SECTION: Instructions | Video Tutorial | How it Works

Supplies Needed

• 2 Tall Drinking Glass

Floating Egg Science Lab Kit – Only $5

Use our easy Floating Egg Science Lab Kit to grab your students’ attention without the stress of planning!

It’s everything you need to  make science easy for teachers and fun for students  — using inexpensive materials you probably already have in your storage closet!

Floating Egg Science Experiment Instructions

Experiment Setup – Start with some observations about the eggs. Note that they are both raw eggs and have a similar size and weight. Then ask some questions. Do you think that the eggs will sink or float when placed in water? Do you think it’s possible to make them float? If so, how? Write down your hypothesis (prediction) and then follow the steps below.

Step 1 – Fill a tall drinking glass about 3/4 full of water and carefully place the egg into the glass. What happens to the egg? That’s right, it sinks to the bottom.  

Did you know there is a way to make it float? Continue on in the experiment to find out how. 

Step 2 – Fill another tall drinking glass about 3/4 full of water. 

Step 3 – Add 3 Tablespoons of salt to the water and stir until it is completely combined. What do you think will happen if you place the egg into the glass with the salt water? Write down your hypothesis (prediction) and then test it to see if you were right. 

Step 5 – Next carefully place the second egg into the glass with the salt water. What happens to the egg? That’s right, it floats. Take a moment to make some observations. Why do you think one egg sinks and the other egg floats?

Find out the answer in the how does this experiment work section below.

Video Tutorial

How Does the Floating Egg Science Experiment Work

Why does the egg sink in regular tap water, but float in saltwater? The answer lies in the density of water!

Density is a measure of the mass per unit volume of a substance. Simply said, how much “stuff” in a given volume. Water has a density of 1 g/mL (g/cm3). Objects will float in water if their density is less than 1 g/mL. Objects will sink in water if their density is greater than 1 g/mL.

The egg will sink in regular tap water because the density of the egg is greater than the density of water. The egg’s density is only slightly higher than water at 1.03 g/mL, but that is enough to make the egg sink.

When you add salt to the water, you are increasing the density of the water by adding more mass (or stuff) in the given volume. You don’t really change the volume of the water by adding salt. By adding enough salt, you increase the density of the water so that it is higher than the density of the egg and the egg will float!

Other Ideas to Try

Try this experiment again, but instead of using an egg use a potato slice or a carrot slice. You will have to play around with the amount of salt you add to the water because all objects have their own unique density. Add salt a tablespoon at a time and mix well until you cannot see any salt in the solution, then add your object to see if it floats or sinks. Remove your object and keep adding salt until you can get your object to float. To make it a true science experiment, create a data table to keep track of how much salt you add to the solution.

I hope you enjoyed the experiment. Here are some printable instructions.

• Drinking Glass

Instructions

• Fill a tall drinking glass about 3/4 full of water
• Place the egg into the glass of watch and watch it sink
• Fill another tall drinking glass about 3/4 full of water
• Add 3 Tablespoons of Salt and stir until combined
• Place the egg into the glass and watch it float

Reader Interactions

April 3, 2019 at 2:58 pm

i love this experiment

January 23, 2020 at 11:14 pm

I really loved doing this experiment with my class

August 26, 2020 at 2:59 pm

The egg floats because the density of the salt water changes to be greater than the egg and the density of the egg becomes less dense so then the egg floats. But when you put an egg in tapwater the density of the egg is greater than the density of the tapwater which makes the egg sink.

January 20, 2022 at 11:33 am

bro I loved this experiment it was amazing!!! I tried it out with my friends and it worked! Thank you!

February 10, 2022 at 7:19 pm

this is very helpful thank you

March 7, 2022 at 9:56 am

i loved this experiment : )

April 16, 2023 at 11:35 am

I love doing this experiment at home

May 1, 2023 at 9:00 am

It’s amazing thank you for sharing.

November 3, 2023 at 10:18 am

This is my science fair experiment! YAY!

November 25, 2023 at 7:41 am

wow what a great experiment m!!!

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Egg in Vinegar Experiment – Make a Rubber Egg

The egg in vinegar experiment is a fun way of learning about egg structure, chemical reactions, osmosis, and the scientific method . It’s a safe and non-toxic project, so it’s perfect for young investigators. Other names for the egg in vinegar experiment are the naked egg, rubber egg, or bouncy egg. The “naked” part is easy to understand, because you’re removing the shell from the egg using chemistry. The “rubber” or “bouncy” description implies the egg bounces rather than breaks. Does it work? You be the judge!

The Chemistry of the Egg in Vinegar Experiment

Vinegar contains acetic acid (CH 3 COOH), which is a weak acid . Egg shells are calcium carbonate (CaCO 3 ). Acetic acid reacts with calcium carbonate, making calcium acetate and carbon dioxide. Here is the balanced chemical equation for the reaction:

2 CH 3 COOH(aq) + CaCO 3 (s) → Ca(C 2 H 3 O 2 ) 2 (aq) + H 2 O(l) + CO 2 (g)

The calcium acetate dissolves in water, while the carbon dioxide is a gas and forms bubbles. So, the egg shell dissolves and bubbles away, leaving a naked egg.

What You Do

All you need for this project is an egg, vinegar, and a cup:

• Cup large enough for the egg
• Food coloring (optional)

Use either a raw egg or hard-boiled egg. The advantage of using a raw egg is that you can see into the inside of the egg when you are done. The advantage of using a hard-boiled egg is that it bounces after pickling in the vinegar. The raw egg bounces a bit too, but if you use too much force it breaks open and makes a mess.

• Place the egg in a cup.
• Pour vinegar over the egg until it is just covered. It’s okay if the egg floats a bit. If you like, add a few drops of food coloring. After about 15 minutes, observe the bubbles forming around the egg. The bubbles are carbon dioxide gas. They form from the chemical reaction between the acetic acid in the vinegar and the calcium carbonate of the egg shell. You may also feel that the cup is slightly warm. The reaction is exothermic, meaning it gives off heat. The bubbles and temperature change are two signs of a chemical change .
• Wait a day. Also note that the liquid becomes cloudy or scummy. This is the dissolving egg shell.
• If you remove the egg after 1 day, use a spoon. Otherwise, a raw egg easily ruptures. At this point, if you remove the egg, you can easily rinse away any remaining shell. But, you get better results if you pour off the liquid and add fresh vinegar. This is especially true if you want a rubber egg or bouncy egg. Wait another day or two, giving the vinegar time to get all the way into the egg.
• Remove the egg and rinse it off using water.

Why Rotten Eggs Float in Water

Learn the scientific reason why bad eggs float in water, while good eggs sink.

Science Experiments to Try

Now that you have a rubber egg, what do you do with it?

• Examine the internal structure of the egg. This only works if you started with a raw egg and not a hard-boiled one. Identify the egg membrane, yolk, egg white (albumin), and chalaza.
• Compare the egg without its shell to a normal egg. Notice that the egg soaked in vinegar is slightly larger than the egg with its shell. Why is this? The reason is because water entered the rubber egg via osmosis . The concentration of salts, proteins, and other molecules inside the egg is greater than the concentration in the cup. The egg membrane is semipermeable. It allows the movement of water, but not larger molecules. So, the egg swells with water to try to dilute the inside of the egg so it has the same concentration and outside of the egg. Experiment : Predict what happens if you soak the rubber egg in corn syrup, salt water, or sugar water. Compare the size of this egg with a normal egg and a rubber egg. Corn syrup, salt water, or sugar water shrink the egg because the liquid is more concentrated the interior of the egg. Here, water leaves the egg via osmosis.
• Try bouncing the egg. In addition to dissolving the egg shell, vinegar also pickles the egg. It changes the conformation of protein molecules in the egg white. Because vinegar has a low pH, it also helps preserve the egg. Experiment : Compare how well a rubber egg bounces depending on whether you started with a raw egg or hard-boiled egg.

Can You Eat the Egg?

Eating an egg after soaking it in vinegar is not a great plan. First, it won’t taste great. Second, it could make you sick. If you must eat your experiment, soak a hard-boiled egg in vinegar in the refrigerator for a few days.

Does the Egg in Vinegar Smell Like Rotten Eggs?

Mostly, the egg comes out of this project smelling like vinegar. Vinegar pickles the egg, which preserves it. But, once you remove the egg from vinegar it starts decomposing. After enough time, if you break the egg, it will stink. The odor comes from hydrogen sulfide gas, which is a product of the decomposition reactions in the egg.

Of course, if you start the project with a rotten egg, all bets are off. Rupturing the membrane releases any trapped gases. Bounce these egg with care!

Egg In Vinegar (Rubber Egg) Experiment

Find out why this rubber egg or bouncy egg experiment is a classic must-try science activity you can set up in minutes in the classroom or at home! How can you make an egg bounce? What happens to the shell? Does light pass through it? There are so many questions and one easy experiment using everyday supplies. All science experiments should be this exciting, easy, and fun!

Egg In Vinegar Experiment

💡 This experiment is quick to set up, but it must be left for 48 to 72 hours to dissolve the shell and create a bouncy egg!

• Household Vinegar
• Jar or a Vase

STEP 1:   Place an egg in the jar and cover with vinegar.

Optional: You can color the vinegar with food coloring for rainbow-colored rubber eggs too!

STEP 2:   Wait and watch!

Notice the bubbles on the eggshell! The acid in the vinegar reacts with the calcium carbonate in the shell. This reaction produces a gas called carbon dioxide!

STEP 3:   After 48 hours, remove the egg and rinse it off. Ours had a layer of brown scum that was easily washed away!

The hard outer shell is gone and the egg white and yolk are surrounded by a thin membrane.

Why Does An Egg Become Bouncy In Vinegar?

Eggshells get their hardness from a mineral called calcium carbonate similar to our bones. When you place the egg into the vinegar, you will observe bubbles.

These bubbles or gas are produced because of the chemical reaction between the vinegar (an acid) and the calcium carbonate (the base) in the eggshell.

When an acid and a base mix, they form carbon dioxide, a gas. Learn more about acids and bases.

The eggshell breaks down, leaving a soft, bendable, squeeze-able, rubber egg. Does it bounce? Kids can gently squeeze the egg and bounce the egg. However, be prepared for the eggs to burst! See our suggestions below.

Try our seashells in vinegar experiment for another variation of this chemistry lesson.

How does osmosis work?

You may have noticed that the egg gets larger as the shell disappears. The process of osmosis is the reason the inside of the egg increases in its size!

Osmosis is the movement of water through a semi-permeable cell membrane. The water from the vinegar moved inside the egg because of the tiny holes in the membrane.

However, the holes are not big enough to allow the egg to come out, so now the egg and water are inside the cell membrane together! The cell membrane is called semi-permeable because only some materials can pass through. Learn more about osmosis here!

FREE Printable Science Activities Calendar

Fun Things To Do With Your Rubber Egg

Now for the fun part: exploring the naked egg with students! We gathered a few supplies such as a magnifying glass and a large flashlight. However, first, we talked about what our naked egg felt and looked like. We had made a cool, rubbery feeling egg!

💡 TIP: Help your child learn to explore by asking questions to spark curiosity!

All of these questions encourage exploration and hands-on learning. Have kids use their senses to observe ! What does it smell like? What does it look like? There are so many ways to explore. Grab the magnifying glass too!

Can an egg bounce?

Yes!! How high can an egg bounce?

TEST IT: How high can your egg bounce before it breaks? Watch out! This might get messy!

Can you see through an egg?

In general, you can’t see through a raw egg but what about a rubber egg? What happens when you put the naked egg up to a flashlight?

TEST IT: You can see through it! You can even see the yolk rolling around inside. Why is this? Because the hard outer shell is no longer there, you can see through the membrane of the egg.

Will a rubber egg eventually burst?

Of course, we were prompted to wonder what would happen if you burst the naked egg. WOW! With a quick prick from a skewer, the egg burst! We were all quite surprised. The images below show what the naked egg looked like afterward.

Turn It Into An Bouncy Egg Science Project

This basic version below is perfect for younger kids. It includes the right amount of play and learning . For older kids, apply the scientific method by using variables . For example…

• Eggs – Are there differences in eggshells between brown and white eggs? How about organic eggs versus regular eggs?
• Liquid – What happens when you put the rubber egg back in vinegar or another liquid? How about corn syrup? Test different liquids and explore osmosis once the shell is dissolved!

Want to turn this fun science experiment into a science project? Then check out these helpful resources.

• Easy Science Fair Projects
• Science Project Tips From A Teacher
• Science Fair Board Ideas

More Fun Science Experiments To Try

• Take egg drop STEM challenge
• See if you can make an egg float
• Test the strength of the shell
• Make a crystal eggshell .
• Set up a potato osmosis lab.
• Dissolve a seashell!

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my my bursted my rubberr egg im very upset

is this a fair test?

too many pages to print out….not easy to be able to do .keeps saying click below but get the cards on hypothesisi…dont want that

This is an awesome activity.

This was amazing! in the end it turned out great! my sister popped it tho :c

Comments are closed.

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Egg in Vinegar Experiment

Did you know you can study cells by examining eggs? Chicken eggs are essentially one big cell making it much easier to study than the teeny tiny cells that make up our body. With this cells unit study on cells we examined raw eggs to learn about their parts. This was a great introduction into the concept of the cell, but we decided to take our study of the egg up a notch. It was time to do an egg in vinegar experiment and the always fun rubber eggs study.

Naked Egg Experiment and Cell Study

What you will discover in this article!

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To start off our unit study we discussed cells and how they make up all living things. Then it was time to get hands on! We decided to bring some chemistry to our biology lesson and do a simple experiment – the egg in vinegar experiment.

This science experiment has a few names: Rubber Egg Experiment, Bouncy Egg Experiment, Naked Egg Science Experiment or Egg in Vinegar Experiment. No matter what you call it, this is one of our all time favourite simple science experiments. And it pairs perfectly with an egg cell study.

With this experiment we remove the shell of a raw egg with a chemical reaction, leaving us with a naked egg. The inside of this naked egg provides an excellent opportunity to study cells.

Here is a Quick Video Showing the Process

Hands on exploration .

We kicked things off with each child taking an egg and exploring. We encouraged their curiosity as they explored the shell, how fragile the eggshell is, and what it looks like when cracked open.

Surprisingly, we were able to remove some of the shell from one of our eggs revealing the membrane! This made the kids even more excited about our experiment to create naked eggs.

To remove the shell of a raw egg we need to do a little chemistry experiment. For this you will need:

• Eggs (regular eggs are perfect)
• White Vinegar
• Mason Jars (other wide mouth jars or plastic cups work too)
• Food Colouring
• Large plates or bowls

Extra items you may want available for further investigations:

• Magnifying glass
• Kitchen scale
• Fabric tape measure
• Towels or protective covering for the area while exploring with the naked eggs

Start by testing to make sure your eggs will easily fit into (and out once enlarged) easily. I recommend using wide mouth mason jars for at least one of the eggs so kids can really see the reaction. But if you want to do lots of eggs you can do them in large plastic cups or even do big batches in large bowls.

I recommend doing extra eggs. Some may not survive the experiment and even once the shells are removed the membranes are still quite thin and easy to break. Having lots of naked eggs will provide kids with plenty of opportunity to explore and learn with the resulting bouncy, rubbery eggs. 

Set the egg carefully in the container, pour vinegar over the egg until it is submersed. The egg may float, this is OK. Add a little food coloring to the vinegar. Now let it sit for 24 hours.

Bubbles form immediately on the shell as the chemical reaction begins. These carbon dioxide bubbles are formed by the vinegar reacting to the calcium in the egg shell.

After about 24 hours you will end up with foam on top of your vinegar and the remaining liquid is mostly water. You will end up with a foam on top and eventually you will have only liquid water left.

After 24 hours drain off the liquid and replace with fresh vinegar. You can also add more food colouring if you wish. It is very important to replace the vinegar to ensure there is enough acid for the chemical reaction to finish.

Tip – Getting Vibrant Colours

To get really vibrant colours in your Bouncy Eggs, add a few drops of gel food colouring to the initial vinegar soak. Gel colouring is much more intense in colouration. Then let it soak for 24 hours.

We then soaked our eggs in plain vinegar for the second soak. And our eggs came out very saturated in colour.

What is the Chemical Reaction When You Place an Egg in Vinegar? 

Here is the chemical reaction:

CaCO 3 + 2 HC 2 H 3 O 2   →  Ca(C 2 H 3 O 2 )2 + H 2 O + CO 2

To break this down you have:

Egg Shell (Calcium Carbonate) + Vinegar (acetic acid) → Foam Floaties + Liquid Water + Carbon Dioxide Gas Bubbles

The result – naked eggs.

After another 24 hours (2 days in total) your naked eggs should be ready! Carefully drain off the liquid and rinse your eggs under a gentle stream of water.

The membrane of the egg is still quite thin and fragile. So handle with care and do it in a place that is easy to clean!

Studying Naked Eggs

Start by letting the kids handle the eggs. their curiosity should lead them to lots of neat discoveries. Some questions you can ask are:

• What do you notice about the eggs?
• How do the eggs from the vinegar experiment feel compared to eggs still with their shells?
• Can you see anything moving inside? Try holding it up to a light or flashlight.
• How does the size of the naked eggs compare with eggs that have not been through the chemical reaction?

Why does the egg feel rubbery after being in vinegar?

Egg shell is basic and vinegar is an acid. When you place an egg in vinegar it reacts causing the shell to dissolve leaving only the rubbery membrane holding the egg together. If you are lucky enough to get some of the shell off a normal raw egg, you can see the membrane.

Bouncing Eggs

My kids had a great time bouncing eggs in a large bin. As long as you don’t add too much force, you can bounce a raw egg. So cool!

What can you see inside naked eggs?

Hold the eggs up to a flashlight or bright light and move the egg around or gently squeeze it. You should be able to see the yolk and other parts inside the egg floating around.

Why does the egg get bigger in Vinegar?

Did you notice the eggs are larger than before you placed them in the vinegar? This is why we recommend using a wide mouth jar. Otherwise your naked egg could get stuck in the jar! But why does this happen? It’s because of a process called osmosis. Through osmosis some of the liquid (water) moves through the semi-permeable membrane into the egg. It does this until it reaches an equilibrium between the amount of water inside the egg membrane and the surrounding liquid. If it didn’t stop at equilibrium the egg would get so large it would eventually pop! Since there is no hard shell to keep the egg small, it expands and grows.

Learn more about Osmosis with our Rainbow Water Beads Experiment or Gummy Bear Experiment .

Getting Inside – Studying Cells with Eggs

I recommend working over a large bowl or plate as kids explore the eggs. Undoubtedly, some will break. This isn’t the end of the world though, it just means it is time for some new lessons on cells.

If you don’t have any broken eggs take a knife or tooth pick and gently poke the egg to rupture the membrane.

The food dye travels through the membrane into the egg white (this is part of the osmosis process we discussed that also caused the egg to grow), but a special membrane around the yolk stops the dye from traveling into the yolk. This is a great visual for permeability and osmosis.

But closer inspection shows that some very special parts of our egg have taken in quite a lot of the dye. The chalaza, stringy bits on either side of the yolk that help to hold it in place, and the blastodisc, a circle in the middle of the yolk, this is where the sperm enters to fertilize the egg and is the nucleus of the egg (just like a cell!).

Dying the egg makes it much easier to see all these parts of the egg compared to when we just cracked open a raw egg. Now kids can see the cells and structures more clearly.

Digging Deeper Science Activities

This is such a fun experiment, why not take it further with some scientific investigative studies? Answer questions like:

What happens if you let the eggs soak in vinegar for a week instead of only 2 days? Compare the differences.

What happens if you boil the egg before placing it in vinegar?

What can you change in your experiment to make the resulting egg more bouncy and less prone to breaking?

Compare before and after. Take measurements, weights and work out how much the eggs changed during the experiment.

What happens if you take a naked egg and place it in corn syrup? (Tip! The result has to do with the process of osmosis).

Explore osmosis further… What happens if you soak a naked egg in water?

Don’t have time to do all of these experiments? Use your critical thinking skills and lessons learned from this experiment to predict what you think will happen. Create your hypothesis then do some research to see the answer when you have time, either by experimenting yourself or reading about experiments done by others.

Rubber Eggs with a Halloween Twist – Monster Eyes!

Looking for a fun twist on this activity for Halloween? Why not make a bowl of Monster Eyes ! The kids LOVED this Halloween Egg in Vinegar project.

Looking for even more exciting egg science and STEM activities? Why not try:

Creating an Egg Crystal Geode (so gorgeous!)

An Oobleck Egg Drop Challenge

Or check out all of our Egg Science Projects for even more inspiration!

More STEM Activities

Naked Egg – Egg in Vinegar Science Experiment

Learn how to make a rubber egg with this classic chemistry experiment.

• 2 cups Vinegar
• 10 drops Food Colouring

Instructions

Carefully place the egg in the jar using the spoon. Cover the egg with vinegar (about 1 cup, just enough to cover it).

Add 4 or 5 drops of food colouring.

Let sit for 24 hours.

After 24 hours, carefully drain off the liquid.

Cover with fresh vinegar (add a bit more food colouring if you wish).

Let sit for another 24 hours.

Remove from vinegar solution and rinse gently with water.

Play and explore your rubbery, squishy, bouncy, naked eggs!

Bubbles will form while the egg is soaking in the vinegar. This is the chemical reaction taking place that removes the shell of the egg, leaving just the membrane. Encourage your kids to explore their naked, rubber eggs as they learn about chemical reactions and osmosis. Examine the eggs with magnifying glass or flashlight. Try bouncing the eggs on a tray (be prepared, some may break!). Break open the eggs to learn about the parts of cells. Dig deeper by measuring the chemical reaction and exploring how osmosis works. Most of all, have fun with your rubber eggs! Learn more about the chemistry and extension activities in the article. 

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5 STEM Egg Experiments

Show kids the power of science!

Eggs aren't just a delicious and healthy part of your diet: they make great science teachers, too! There are so many fun and educational STEM eggsperiments (egg experiments), and today we're going to share five of our favorites to do with your kids. So grab a few dozen eggs and let's get started!

Note: all of the experiments below should be conducted with adult supervision.

Physics eggsperiment: walking on eggshells

You've likely heard the idiom "walking on eggshells," often used to describe a tricky situation you need to navigate cautiously. The reality is that eggshells are much stronger than many of us imagine. To put it to the test, we're going to walk on eggs!

First, lay a blanket or towel under two or three dozen eggs in their cartons. Have your kids help inspect each egg for cracks and point them all same side up.

Help your kids place each foot on a carton of eggs, making sure to distribute their weight evenly.

You will find that the eggs are actually incredibly strong and hold up against the pressure of your test subject's evenly distributed weight! The egg's unique shape gives it great strength, despite its perceived fragility. In fact, eggs are strongest at the top and bottom, which is why they don't break when you apply pressure evenly on both ends.

However, eggs do not hold up well against unevenly distributed pressure, which is why they are easy to crack on the side of a glass or on the counter when you make your breakfast. This is why a hen can sit on her eggs without breaking them, but a baby chick can peck its way through the shell!

Enamel stain eggsperiment

Next, we're going to demonstrate the effects of sugars and acids on your teeth using eggs. The hard shell of an egg protects the soft parts inside, including the egg white and yolk, just like the hard enamel on your teeth protects the soft and tender pulp on the inside. Moreover, both eggshells and teeth are made of calcium—a hard white substance that also makes up our bones.

To begin, fill a few glasses with various liquids, including soda, grape juice, and water. Add an egg to each glass and let sit for 24 hours.

Ask your kids to examine the eggshells and describe what they notice. As expected, eggs that were submerged in water should have remained unchanged. Grape juice will have the most surprising results - the egg should turn black!

Depending on the ingredients in the beverages you chose, most of the eggshells will now be stained, just like your teeth might be after you drink that soda or juice. To take this experiment to the next level, have your kids use a toothbrush and toothpaste to see if the stains can be removed.

Naked egg eggsperiment

Now that we've tested the protective qualities of eggshells, let's find out what happens to an egg without its protective outer shell. Is it possible to remove an eggshell without breaking the egg itself? Find out how to make a "naked" bouncy egg with this fun experiment. All you need is vinegar!

Have your kids carefully fill two glasses with vinegar, then gently drop an egg in each glass and let them sit for 24-48 hours. Have your kids check in from time to time: they'll notice that the eggs will appear to fizz and bubble, until finally, the shells dissolve completely!

Discard the vinegar and inspect the results with the kids. What is left is a transparent, "bouncy" egg.

Eggshells are primarily made up of calcium carbonate, and when you soak the them in vinegar, which is acidic, you start a chemical reaction that dissolves the shell itself. You can also try pushing your finger into the membrane to test its flexibility. Next, experiment with dropping it from various heights to test the limits of its bounciness and strength, then save your naked egg for the next eggsperiment!

Osmosis experiment: egg membrane

Now that we have naked eggs, we're going to take the science one step further by witnessing osmosis.

Have the kids fill a glass of water with red food coloring, drop one of the naked eggs into the glass, and wait. After 24 hours, ask them what changed: the membrane and the inside of the egg have turned red!

Next, have the kids fill a glass with tonic water, drop a naked egg in, and wait. Because tonic water is clear, there are no observable differences to the naked egg after 24 hours. But there's more to this than meets the eye...

With the protective shell removed, all that remains on the outside of the naked egg is a semi-permeable membrane, meaning certain substances can easily pass through its protective barrier. The inside of the egg has a lower water concentration, so over time the membrane of the egg allows water to seep into the egg—this process is called osmosis, and the kids can see it in action by cutting the egg in half to reveal the red water on the inside. Now that the egg has absorbed some water, it has also increased in size!

Now take a flashlight and shine a light on your tonic water egg. Ask the kids if they see any changes: the egg has absorbed the tonic water, which has properties that make it glow under a black light. Through the power of osmosis, we now have a glowing egg!

Air pressure eggsperiment: egg in a bottle

Did you know that you can suck an egg into a bottle without touching it? Our last experiment uses air pressure to do just that.

First, hard boil and peel an egg, then have your kids set it on the opening of a standard glass milk bottle or a science lab beaker with a wide mouth— just be sure to select a bottle that is made of glass and approximately 1.25" wide at the opening. You'll find that the egg is too large to squeeze through the neck, but we're about to change that.

Next, light a match (or four) and toss them into the bottle, then quickly place the egg back on the opening of the bottle.

Within moments, the warmth from the matches begins to cool, and the resulting air pressure will cause the egg to squeeze through the neck and into the bottle! This happens right when the egg is placed on top of the bottle openings, creating a seal. Once the matches stop burning, the air inside the bottle cools, lowering the air pressure inside and pulling in the egg.

As you can see, eggs really are remarkable! If you tried one (or all five!) of these experiments, let us know what you learned in the comments below.

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Egg and Soda Science Fair Experiment: Tooth Decay Project

Krystal DeVille

July 10, 2022

Healthy teeth are essential for your overall health!

They make it a breeze for our mouths to form words and flash million-dollar smiles. This importance in our lives is why we must pay attention to a potentially adverse problem: tooth decay .

Are you having a hard time getting your child to brush their teeth? If so, it might be time to bring out the big guns by introducing the egg and soda science fair experiment to explore the concept of dental health.

Theoretically, a hard-boiled eggshell works similarly to the enamel on your child’s tooth. It protects the dentin (the soft inside of a tooth) from damage.

Unfortunately, some of our dietary habits make it difficult for the enamel to protect our teeth from damage. This science experiment will demonstrate the repercussions of our choices on our bodies, and why tooth health matters. Read on!

Table of Contents

Egg and Soda Science Fair Experiment

What You Need

The good news is that the egg and soda science fair experiment doesn’t require a myriad of pricey supplies. They’re wallet-friendly and there’s the likelihood that you have most of them in your home. If not, they’re readily available online and can be delivered to your doorstep.

• Three clear plastic cups
• Toothpaste and a toothbrush
• Three white-shelled hard-boiled eggs

Before the Egg and Soda Science Fair Experiment

Start by talking to your child about the importance of dental hygiene practices that include brushing their teeth twice a day.

Ensure you explain how certain activities, drinks, and food, can damage and stain teeth. You’ll also want to delve into how the consumption of acidic drinks can erode tooth enamel .

Ask your child to name a few types of drinks that are detrimental to their teeth. They may list juice, soda, or coffee because of the acid and sugar.

Furthermore, you can ask your child to think of drinks that can boost the health of their teeth. They might answer water and milk.

You can also find out if they believe brushing after the consumption of some of the harmful drinks can lower the risk of damage to their teeth.

Explain the Egg and Soda Science Fair Experiment

To spark their curiosity and pique their interest, inform your child that you have a way of discovering the repercussions of leaving those harmful drinks on their teeth overnight.

With a boiled egg in hand, demonstrate how it resembles their teeth (a thin and sturdy outer shell and a soft inside). Take the time to explain the consequences of leaving the egg soaked in soda overnight, compared to water.

Additionally, consider various types of soda such as colas that have varying effects compared to their clear lemon-lime counterparts.

Another fun experiment I did with my son was the Cloud in a Bottle project. You’ll make clouds inside your house in a few different ways.

Perform the Egg and Soda Science Fair Experiment

It’s a straightforward experiment that can be performed by following the steps below.

• Boil the eggs, ensuring you have a few extra ones if some of them crack during boiling. A cracked shell on your hard-boiled egg will alter the outcome of the experiment.
• Help your child fill each of the plastic cups whereby one has water, another has diet soda, and the third contains regular soda.
• Once the eggs have boiled have your child put one in each plastic cup then leave them overnight.
• Check on the eggs the following day. You may need to pour out the liquid from each cup to examine how each egg has been affected. You’ll notice the egg in the cola has been stained.
• Discuss the changes you notice in each egg. Ask your child what they believe occurred and the solution to get the eggs back to their original state.
• Give your child some toothpaste and a toothbrush and have them attempt to brush the stains off the eggshell.

As a variation, you can boil a few additional eggs and add cups with coffee, clear soda, vinegar, and orange juice for comparison.

Understanding the Results of the Egg and Soda Science Fair Experiment

Each liquid provides essential information on how certain liquids negatively impact our teeth. The egg in water will have no changes because the acidity (pH) of water is close to your body’s resting PH. Water won’t break down your teeth, making it one of the healthiest liquids to consume.

Although the soda pop will result in softening of the outer shell of the egg, certainly not as much as vinegar. Most importantly, the soda pop will result in a discoloration of the white egg, particularly if the soda is dark. Its acid levels can result in the weakening or demineralization of the tooth enamel.

Lastly, the acidic level of vinegar is detrimental to your teeth during an acid attack. Every time you consume starch or sugar, the bacteria in your mouth utilize it to form the acid that is represented in a tooth decay experiment with vinegar.

The acidic vinegar breaks down the minerals in the eggshell just like acid does to the outer shell of your tooth. After a few days, there’s barely any shell left.

Preventing Tooth Decay

Aside from brushing your teeth every day, are there other ways to curb tooth decay? Although dentists recommend fluoride, how effective is it? You can find out by filling two clear jars with vinegar.

Then, coat one eggshell layer one eggshell entirely with gel fluoride toothpaste and put it in one jar, and put an uncoated eggshell in the second jar.

Keep an eye out for signs of decay on the uncoated eggshell as you note the condition of the coated eggshell. You shouldn’t notice decay on the coated eggshell.

The Takeaway

You and your child can learn two main things from this experiment. Firstly, the acid contained in soda and vinegar has the potential to severely erode tooth enamel.

Secondly, it takes more than just a few quick swipes with a toothbrush to get teeth spick-and-span. Therefore, incorporating healthy food choices in addition to brushing teeth every day with fluoride toothpaste is the key to preventing teeth erosion and decay.

Continue with the fun science experiments with some chemistry. Please take a look at our article full of fun and easy baking soda experiments for kids .

2 thoughts on “Egg and Soda Science Fair Experiment: Tooth Decay Project”

Marvelous, simple explanation

This is sooo helpful for me thank you.

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Egg Science Experiments for All Ages

Egg science experiments.

We are quickly moving into spring and around here spring seems to be synonymous with the egg.  Whether it is Easter or new beginnings eggs (in all their variations seem to be everywhere). So I wanted to give you a few ideas for egg science experiments because don’t we all love a good link to current events and seasons?

These projects range from easy egg science experiments to possible egg science fair projects.

>>>>Click HERE to Grab a Science Egg Drop Experiment<<<<

Magical Eggs

This is a project that we have done many times, but each time exploring a different component of science and our study of eggs.  Have you heard of those science experiments bouncy eggs?  It is usually some version of this project.

This project is great when discussing:

• cell structures
• movement across the plasma membrane
• chemical changes

The idea is to remove the outer shell of an egg and keep the inner membrane intact.   This is an egg science experiment with vinegar so you can imagine the smell, but it is worth it for the fun.  Great hands-on learning.  You can grab the osmosis egg project (click on the name).

Eggcellent Genetics

I have used plastic eggs to help teach the concepts of Mendelian genetics for close to 20 years.  It is always a crowd-pleaser.  I use colored paper clips to represent the genotype and the eggs themselves represent the phenotypes.  I love this because it is a great building resource so that you are always coming back to these eggs and what the students saw.

I use the eggs to teach:

• monohybrid crosses
• dihybrid crosses
• codominance
• incomplete dominance
• multiple alleles

Click on the image to grab your copy.

Egg Crystals

Borax crystals are a great introduction to a chemical concept called supersaturation plus they are just fun.

Want to make some?  Check this out.

How Strong Are Eggs?

Have you ever wondered why hens don’t crack their own eggs when they sit on them to incubate?  It is all about the arch. You can even try it out yourself.   Not sure you want to play with eggs, grab the bridge STEM challenge where arches are discussed in full detail.

Pasteurized Eggs

Pasteurization changed the way we think about food and food preservation.  In fact, I had to hunt down pasteurized egg whites for my royal icing in December.  You can run your own pasteurization experiment.

Eggs Make Cakes Rise- Food Science

Chicken Life Cycle

Which came first, the chicken or the egg?  Learn all about the life cycle of a chicken .

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How to Make Egg Geodes

55 Comments

Today we’re experimenting with   egg geodes and I’m going to share how to make egg geodes with borax.

This experiment is set up to engage children in the  steps of the scientific method,  which could easily make this a fun and successful  science fair project   (<–see this list for science fair project ideas) . 

Egg Geodes Inspiration

I was inspired by these egg geodes that I spotted on Martha Stewart and then followed this recipe by Melissa Howard who blogs at Those Northern Skies .   If you enjoy this post, do click over and see what these two sites have to offer. The pictures alone are worth looking at.

Ingredients

• Other substance that could be tested for crystallization such as sugar, epsom salts, cream of tartar, baking soda, or alum*
• Mini-muffin pan
• Food Coloring

I tapped  a knife around the top of the eggs to remove a bit of shell, and then emptied the eggs and cleaned them with water. Using a finger, it’s important to gently rub around the inside of the egg to remove the membrane  because the membrane can discolor crystals as the form.

If you happen to have a mini-cupcake pan, it’s like they were made for this job.

We heated a pot of water (not quite boiling) and then poured 1/2 cup into a mug. We added 1/4 cup of kosher salt into the first mug and mixed it until it dissolved.

The kosher salt was stubborn and wouldn’t dissolve, so Nutmeg handed the mug to me for some rigorous mixing. Sill no luck.

We moved on to the next mug: 1/2 cup hot water + 1/4 cup sea salt. The sea salt dissolved quickly and then we added a bit more. The idea is to saturate the solution without putting in too much of the dry ingredient.

And then the final mug: 1/2 cup hot water + 1/4 cup borax. Dissolved.

We added a coup;le drops of food coloring to each mug and then made a chart so we wouldn’t lose track.

Then we poured the liquid into our eggs. Each solution made just enough to pour into two eggs. Perfect!

And then you wait. 5  days for the liquid to mostly evaporate.

We couldn’t that long, but after 1 day salt crystals evaporated through the egg shell, and after 2 days our eggs looked like this…

Kosher Salt 

Through the process of diffusion, the salt actually passed through the permeable shell. Gorgeous, isn’t it?

Borax With opposite results of the salt-solutions, borax created the most sparkly, crystal-looking egg with crystals inside the egg and nothing on the outside.

And of course, things like this are irresistible to little hands. My toddler wanted to pick all the crystals off the shells, and I had to pull them away because not only will she break them into a gazillion pieces, but substances like borax are safe for looking, not for touching.

So, if this strikes your fancy, have fun testing some of the different soluble solids mentioned in the list above.

Love it! Doing it! 

Love that you’re doing it! Yay! Please report back and send me a photo! radoorley at gmail.com

This looks like a great idea and I will definitely be trying this, thank you. I am concerned with your little girl touching the borax crystals though. Everyone should be aware that borax is toxic and can result in adverse symptoms. Some of the symptoms of Borax ingestion include headache, fever, nausea, vomiting, and red eyes. People should be very careful about their small children handling water soluble borax by making sure that they wash it off quickly .

Symptoms may appear 2 to 4 hours after ingesting Borax.

The best way is to never eat Borax and never use it in food.

Thanks for the shout out for caution, Sue! Because we use these substances with close supervision I sometimes forget that other people may not know about these things. In the photo above, my little one is handling the kosher salt crystals. I made a correction to the post that I hope clears this up for concerned readers. Cheers!

These egg Geodes are beautiful thank you for sharing

Thanks for the nice comment, Daina 😉

These are really beautiful! I know my daughter would love this. Thanks for the great tutorial.

Thanks, Melissa. You’re a great partner-in-crime.

How am I only now hearing about this fun with eggs?!? My kiddos love anything that involves eggs! I have used them for quite a few different “experiments”, who knew you could so much with them?! I will definitely be doing this one.. and now I’m off to read about all of the other ‘eggtivities’ you’ve done so I can do those too! Thanks 🙂

Who knew? And to think that we had to stop ourselves with just 10 egg projects! But guess what, I’ve been collecting egg ideas from my blogging friends, and will have even more for you next week 🙂

These look fun!  My 4 year old would love this!

This is right up your alley, Amy!

So cool!  I am just loving all the ideas you and Melissa are sharing this week!

We’re having a lot of fun, that’s for sure!

I love visiting both of your blogs to look for great ideas. Thanks!

Thanks so much, Natalie! So glad that you’re here.

Now, where to find Borax?  But not sure yet if we’ll do this!  My little one is a riot and I doubt I can control his excitement and NOT let him get his hands on the finished product!

Les from LPN Programs

Hee hee. I found it in the laundry aisle at Target. It comes in a powder form, and looks kind of like a box of Tide or similar laundry soap. 

We tried this experiment with salt, borax, sugar and Washing Soda on our blog http://raisingourfamily.blogspot.ca/2012/04/egg-experiments.html the Washing soda had the best results for us.  Thank you so much for the awesome experiments.  We are off to go do more!

I am doing the experiment for school and I how much alum would I use. Also what is the topic of this project like what are we trying to find out?

Hi David, We didn’t run the experiment with alum or epsom salt (per your question below), but if you do a search on alum/epsom salt + egg +geodes, I bet something will come up. You could run the experiment with different amounts of each substance and compare the results. Good luck!!

Oh and how much epson salt do I use?

i’m useing this for my sci. project. i hope it works!!

Hi Anna, I’m sure you’ll love it. It’s such an interesting process and you’ll learn a lot, first hand, about diffusion. Not to mention, the results can be stunning. Rachelle

i used sugar, water(control), and sea salt. The results are quite cool. i hope i get an a on it.

This project is just to cool! I shared it on Sulia!

I love this

I love science

Hi! My daughter was considering doing this as her science fair experiment but we are having a hard time coming up with the actual question. Any suggestions? Thanks!

Are Egg Shells permeable? (These could lead to a discussion on Salmonella and if it is on the surface of eggs or also on the inside.)

yes there is gon to be a fail

My son and I found this experiment just two days before Easter and are so excited about it. We used kosher salt, sea salt and sugar. So far the kosher salt is doing well I am excited to see how the sugar turns out but those crystals usually take longer. Thanks so much for this fun activity!

Looks like a fun take on the Geode. Great science fun for the kiddies.

Hi, thanks for the really cool idea! You discussed what happens after 5 days, but I wonder what happens if they are left undisturbed for weeks? Do they mold or continue to crystalize? We are planning to use this as a science experiment for my daughter and we are just trying to figure out the timing of it!

My brother suggested I might like this website. He was entirely right.

This post truly made my day. You cann’t imagine simply how much time I had spent for this information! Thanks!

Oh, I have to pin this one! My daughter has been wanting to find a geode… Now she can make one!

It’s hard to find your posts in google. I found it on 14 spot, you should build quality backlinks , it will help you to get more visitors. I know how to help you, just type in google – k2 seo tricks

This is SO. COOL.! I would love to link to your project in my next Kids Craft Roundup if you didn’t mind.

ours was a fail for the scinece faie0

[…] Egg Geodes Tinkerlab shares a unique experiment with three different materials with egg shells. A great experiment to practice the scientific method, make predictions, watch and record results over time. […]

[…] gorgeous Easter Egg Geodes. | […]

[…] Make egg geodes like Tinkerlab. We haven’t tried these yet, but they are on my list to do before Easter this year. […]

[…] My youngest daughter was intrigued with the idea of creating egg geodes by growing crystals inside of clean-out egg shells. She experimented with solutions made from borax, sea salt, and kosher salt, and each one produced a unique result. Inspiration found at: Egg Geodes at Tinkerlab […]

[…] Find the Tutorial at: TINKER LAB […]

thank you for the tips i really needed it for my science fair project. 🙂 🙂 🙂 🙂

[…] 3. Egg Geodes […]

[…] Use your empty eggshells to make Egg Geodes with Tinkerlab. […]

[…] Egg geodes (that are as colorful as real rock geodes!) […]

[…] Make Egg Geodes on […]

[…] Can you make your own geodes? Combine some household ingredients to […]

[…] Egg Geodes Experiment – Tinkerlab […]

[…] #5 Egg Geodes […]

Comments are closed.

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Tooth decay experiment with egg shells

February 12, 2021 By Emma Vanstone 3 Comments

This fun tooth decay experiment with egg shells is all about teeth and how to keep them healthy. First we talked about how important it is to brush teeth everyday and then chatted about foods that are good for teeth and foods that aren’t.

Sugary, sticky food is not good for teeth as it sticks to the surface, bacteria then break down the sugar to make acid which can damage teeth.

Did you know eating cheese at the end of a meal can help neutralise the acids in your mouth and reduce the chance of tooth decay?

Tooth Decay Demonstration

We used these giant teeth from The Consortium and some play dough to demonstrate plaque building up on teeth. The giant teeth made a great prop and really kept the children engaged for a long time.

The we made models of our mouth using more play dough, talking about the size and shape of teeth in our jaw.

We can’t experiment on our own teeth so are using eggs to represent them, as the shell of an egg is made of a similar substance to tooth enamel!

What you’ll need for a tooth decay experiment:

Fizzy flavoured drink

Instructions

• Pour the same amount of fizzy drink, vinegar, water and tea or coffee into your jars.
• Add a whole raw egg still in it’s shell to each, cover an extra egg with toothpaste and also place in tea/coffee.
• Leave for approximately three days.
• Remove the eggs.
• Rinse the egg kept in vinegar and rub gently until the shell comes away.

Results of our tooth decay experiment with egg shells

You should see staining on both the fizzy drink and tea/coffee egg.

We found our toothpaste covered egg stained less than the non toothpaste covered egg.

The vinegar completely dissolved the eggshell, leaving just the membrane behind.

Why do teeth stain?

Tea is rich in tannins which stain teeth if they’re not cleaned properly while cola and fizzy drinks are acidic as well as containing staining products.

Vinegar ( which is acidic)  dissolves the calcium carbonate in the shell, leaving just the membrane intact. This very cool egg experiment lets you bounce an egg without it breaking!

Download the experiment instructions!

More egg experiments for kids

Did you know you can make a strong bridge from eggshells ?

Walk on raw eggs like Housing a Forest .

Make a model mouth using biscuits, marshmallows, jam and peanut butter. This disgusting activity is one of 60 Gross Science Experiments you can find in my latest book, GROSS SCIENCE .

Or, how about trying one of my other very eggy experiments !!

Extra background information for KS1 and KS2 Science

Teeth are not just for eating, animals often use them to defend themselves or to attack other animals.

Different shaped teeth have different purposes. Flat molars like humans have are for grinding and chewing food, while sharp canine teeth are for tearing food apart ( these are found in carnivores ) and large incisors for cutting and chopping grass ( found in herbivores ).

Caring for teeth 

Cleaning teeth, using floss and mouthwash help keep teeth and gums free from plaque. Plaque is formed by bacteria feeding on the sugar left on the surface of teeth after eating.

Suitable for Early Years Foundation Stage

Physical development → health and self-care → elg.

• Children know the importance for good health of physical exercise, and a healthy diet, and talk about ways to keep healthy and safe. They manage their own basic hygiene and personal needs successfully, including dressing and going to the toilet independently.

Key Stage 2 – teeth test

Describe the importance for humans of exercise, eating the right amounts of different types of food, and hygiene.

Last Updated on February 1, 2023 by Emma Vanstone

Safety Notice

Science Sparks ( Wild Sparks Enterprises Ltd ) are not liable for the actions of activity of any person who uses the information in this resource or in any of the suggested further resources. Science Sparks assume no liability with regard to injuries or damage to property that may occur as a result of using the information and carrying out the practical activities contained in this resource or in any of the suggested further resources.

These activities are designed to be carried out by children working with a parent, guardian or other appropriate adult. The adult involved is fully responsible for ensuring that the activities are carried out safely.

Reader Interactions

May 10, 2021 at 9:20 pm

Is there any other material one could use aside from an egge?

May 12, 2021 at 11:57 am

Small ceramic pieces would work too.

May 31, 2021 at 4:46 pm

This experiment is awesome!!!

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11 Fascinating Egg Science Experiments for Kids

We have been putting together many kitchen science experiment ideas for kids . Today we will have fun egg science experiments for you to wow the kids. These are fun experiments to do at home in your kitchen. They are also great for science fairs given those fun effects. Many people look for egg related activities for Easter, but these amazing science experiments are good for any season of the year. Several integrated art, engineering, math, and tech, so they are true STEM projects.

Egg Science Experiments for kids – in the kitchen or for Science Fair

Can an egg float in water ? If not, what can you do to make it happen? A fun and easy science experiment to learn about density.

This egg drop experiment is fun and exciting. The inertia trick will surprise and delight every one in your audience.

Talking about egg drop, you will like this egg drop challenge : making an egg container to prevent egg from breaking when dropped from a very high position. You can set different limitations on the challenge. This is an example of the egg drop challenge design with straws . You can find a successful egg drop design and winning ideas.

Drawing on eggs with crayon and vinegar is a new idea for Easter Eggs. It combines art and science. Kids who like creative activities will like this one.

Get a dozen eggs, and stand on top of eggs ! Are you going to break them? Why?

Have you tried naked egg ? We did this couple times, and every time it was amazing. This is one of the must-try egg science experiments. There are many versions floating around on the internet, but this site has the best science explanation. You can also read a book with kids on How to Make a Bouncing Egg .

An interesting extension of the naked egg, is to make rainbow rubber eggs . It is based on similar science, but has more colorful effect. This post uses the red color to explain to kids about blood cells.

Do you know how to make a spider egg ? Boys particularly will like this one, especially you get to eat the egg afterwards.

How to force a boiled egg through a narrow bottle neck ? This egg experiment will simply amaze kids.

Kids will love to see this effect — glowing egg . Check out the video and follow the link below the video for instructions.

Next post: 45+ Plant Science Experiments To Learn Plant Life Cycles

Previous post: 10 YouTube Science Videos Teaching Skeletal Systems

LOL i love the egg under water one!!👌

What great experiments!

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A Science Fair Project on Tooth Decay

Teeth Science Projects

Healthy teeth are vital when you chew food, which is important for digestion. They make it easier for our mouths to form words and – let's not forget – they make radiant smiles. Because teeth are so important, tooth decay can be a serious problem. A science fair project provides an opportunity to demonstrate how tooth decay happens and how to prevent it. You'll need to create many samples for this project, and you probably don't have a collection of teeth for them. Don't worry. Eggshells are a great substitute, and you can get as many of those as you need.

Causes of Tooth Decay

You've probably heard that sweet foods are a major cause of tooth decay, but that leads to two important questions with demonstrable answers. The first question is "Does the sugar in these foods cause the decay or is it something else?" The second question is "How do you prevent decay? "

To answer the first question, soak eggshells in a variety of solutions that may or may not cause decay. Eggshells are a good substitute for teeth because they are made from chemicals similar to those that form tooth enamel.

You can choose the solutions based on what you think are the most likely causes of decay, but one of the solutions should be pure sugar water, because you specifically want to know if sugar is the culprit. Here are some other possibilities:

• Mineral water

Let the samples sit for a week and then note the condition of the eggshells and write down the results.

You'll probably notice that the eggshells that soaked in cola and vinegar are the most affected. In fact, there may be nothing left of them. On the other hand, the eggshells in mineral water and sugar water are mostly unaffected, while those in lemonade and milk may or may not show signs of decay.

The Explanation

Dentists warn about sweet foods because sugar feeds bacteria living in a layer of plaque on the surface of tooth enamel. These bacteria create acids through their metabolism, and it's the acids that cause decay.

Cola contains phosphoric acid, and vinegar contains acetic acid. Both acids are concentrated enough to soften and partially dissolve eggshells. Sugar water and mineral water aren't acidic, so the eggshells in these liquids should be unaffected. Lemonade contains citric acid, and milk contains lactic acid, but these are less concentrated than the acids in cola and vinegar, so you may or may not see damage to the eggshells immersed in these liquids.

As a follow-up, you might let the eggshells in the milk and lemonade sit for a while longer to see how long it takes for them to show signs of decay.

Preventing Decay

Besides cleaning your teeth regularly, is there any way to prevent decay? Dentists recommend fluoride, but does it really help? Find out for yourself with eggshells and two jars filled with vinegar. Coat one eggshell completely with gel fluoride toothpaste and put it in one jar and then put an uncoated eggshell in the other jar. Watch for signs of decay on the uncoated eggshell and when you see them, note the condition of the eggshell you coated with toothpaste. If fluoride works, you shouldn't see any decay.

Follow up this demonstration by allowing the coated eggshell to remain in the vinegar to see how long it takes to start decaying.

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• Kids Health: Mouth and Teeth
• MadSci Network: How Are Teeth Similar to Eggshells?

About the Author

Chris Deziel holds a Bachelor's degree in physics and a Master's degree in Humanities, He has taught science, math and English at the university level, both in his native Canada and in Japan. He began writing online in 2010, offering information in scientific, cultural and practical topics. His writing covers science, math and home improvement and design, as well as religion and the oriental healing arts.

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