Experiment of the Month
Prior MonthsAugust 2013
The Naked Egg
Have you ever seen a raw egg without its shell? Do this experiment and you will.
- 1-pint glass jar with a lid
- 1 raw egg
- 1 pint of clear vinegar.
- Place the whole raw egg into the glass jar. Do not crack the egg.
- Cover the egg with the clear vinegar.
- Put the lid on the jar.
- Observe immediately and then periodically for the next 24 hours.
- Every day, GENTLY take the egg out and wipe off the egg with a paper towel. You may need to change the vinegar once or twice also.
Bubbles start forming on the surface of the egg shell IMMEDIATELY. This is because vinegar is actually a chemical called acetic acid. Egg shells are made of another chemical called calcium carbonate. When you put an egg in vinegar, the acetic acid and the calcium carbonate create a CHEMICAL REACTION. The bubbles you see are a byproduct of this reaction. Can you guess what those bubbles are? That's right, it's carbon dioxide! Once the shell is gone, the egg is held intact by a thin, see-through membrane around the outside. You should be able to see the yolk through the membrane and VOILA: the Naked Egg. You can hold your egg, just be careful or the YOLK will be on YOU!