Egg in vinegar experiment

Dissolving an egg shell in vinegar is a classic experiment to do with younger children. If you want less of a mess you can use a hard-boiled egg, but using a raw eggs is a bit cooler; the result of the hard-boiled egg is pretty similar to a peeled hard-boiled egg. This experiment is appropriate for any age.

Form a hypothesis
What do you think will happen to the egg in the vinegar?

Experiment
Get two clear glasses of the same size. Place an egg in each cup. Fill one glass up with white vinegar.

Fill one glass with water. This is your control.

Check on your eggs periodically. Leave at least 24 hours before removing the eggs from the class.

Results
What happened to the egg in the vinegar? Was your hypothesis correct?

Why did we put the other egg in water? What other controls could you have used? What did we find out about acids?