What you need: 1 egg 1 cup vinegar clear jar or glass
Directions: Pour 1 cup of vinegar into jar Add the egg
Record what you see (bubbles rising from the egg)
Leave the egg in the vinegar for one day. Remove the
egg and feel it. Record your observations (the egg shell
will be soft) What happened: Eggs contain something
called "calcium carbonate". This is what makes them
hard. Vinegar is an acid known as acetic acid.
When calcium carbonate (the egg) and acetic acid (the
vinegar) combine, a chemical reaction takes place and
carbon dioxide (a gas) is released.
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