Naked Egg


Explore the inner workings of a developing (non-fertilized) egg by removing the shell.



  • 250 mL vinegar

  • Egg

  • Glass beaker


1. In glass beaker, gently place egg.

 2. In glass beaker, pour vinegar into glass beaker until egg is covered

3. Leave undisturbed for 24 hours.

4. Replace vinegar with new vinegar.  Leave egg undisturbed for 24 hours.

5. Gently remove egg and inspect.

The Science Behind the Reaction

Eggshells are made of a compound called Calcium Carbonate (CaCO3) and are dissolved by strong acids, like vinegar.  Once the shell is removed, you are able to see the membrane which passes nutrients to the chick in the egg.

Keep Experimenting!

Take the egg in a dark room and shine a bright flashlight at it to clearly see the inside of the egg.