May 7 2020
Bouncy Egg Experiment
Turning a raw egg into a bouncing ball is a fun (and sometimes) messy experiment to try at home! With just two ingredients, a jar, and some patience, your family can explore what happens to make an egg bounce.
- Raw egg
- Jar with lid
- Place egg carefully in the jar. If the shell breaks at all, you will need to use a different egg.
- Pour vinegar into the jar until the egg is covered. Cover the jar and wait! (Note: Food coloring can be added to the jar to make different colored eggs.)
- 24 hours later, drain the vinegar and refill again. Let the egg sit for seven (7) days. Remember to be patient!
- Remove the egg and rinse off. Time to bounce the egg!
What happens to make the egg turn into a rubber bounce ball? The chemical that makes up the eggshell (calcium carbonate) reacts with the acid in the vinegar. That reaction of an acid and a base creates carbon dioxide (a gas) that causes the eggshell to disappear (look for the bubbles!).
Questions you can ask your family
- What does the egg feel like? Hard, soft, squishy?
- What is that smell when you open the jar?
- What do you think causes the bubbles around the egg?
- Can we guess how high the egg will bounce?
- Will soaking the egg in other liquids make the egg rubbery?