What happens when you submerge a raw egg in vinegar for days? Check out how you can make a naked bouncy egg with your kids in this science experiment.
We know as adults that magic is fake. Don’t get me wrong, magic tricks are impressive, but they are 100% fake. For kids, you don’t need to know magic to blow their minds. All you need is REAL science!
In this experiment, we are going to take an egg and make the eggshell disappear. Moreover, the naked egg is now going to be rubbery and bouncy!
Do this experiment. Trust me, your kids will be amazed when you drop the naked egg and make it bounce.
How to Make a Bouncy Egg
- Raw egg
- Glass jar
- White vinegar
- Place the raw egg carefully in the jar. If it cracks, you need to take it out and try again.
- Fill the jar with white vinegar until the entire egg is submerged in the vinegar.
- Let the egg sit in the vinegar for 24 hours. Let your kids observe what is happening to the egg. Did the egg get larger? What does the shell look like?
- Leave the egg in the vinegar for another 2 days.
- Gently take out the egg and rinse it with water.
- Bounce the egg by holding it 1-2 inches above a surface and letting it go.
Tip: You will want to do this on a plate in case the egg breaks.
Make sure to wash your hands with soap and water after playing with the bouncy egg. Raw eggs contain salmonella bacteria that can make you and your kids really sick!
The bouncy egg experiment is a great way to introduce your kids to science words like hypothesis, observation, and conclusion. Check out the Free Bouncy Egg Experiment Packet for printable materials list and directions as well as worksheets to help your kids get the most out of this experiment!
Bouncy Egg Variation:
Want to take this neat science experiment a step further? Add food coloring to the vinegar and make colorful bouncy eggs!
We added some blue food coloring in the vinegar and the resulting naked egg was so pretty!
The kids took turns bouncing the naked egg. After a few dozen bounces, you can see that small holes started to form in the membrane that held the guts of the egg together. So when we tried to drop the egg from a higher distance, it popped!
You can see that the egg yolk had turned blue. However, the egg yolk remained yellow because the protein content of the yolk prevented the absorption of the blue color.
How Bouncy Eggs Work
The eggshell is made of calcium carbonate. When you submerge the egg in vinegar, the acid in the vinegar reacts with the calcium carbonate and produces carbon dioxide. This chemical reaction is what causes the little bubbles you see surrounding the egg.
As the shell dissolves, the thin membrane of the egg is left behind. The membrane is semi-permeable, which means the vinegar can pass through it. The egg absorbs the vinegar, and that’s why you see the egg increase in size as it continues to sit in the vinegar.
Final Thoughts on the Naked Egg Experiment
What came first, the chicken or the egg? While the world may never know the answer to this age-old question, we at least now know what the inside of an egg looks like thanks for this bouncy egg experiment.
For more awesome science experiments, check out: