Acids and Bases

Lemon Chemistry:

You will need:
 - Fresh lemons
 - a knife
 - small measuring cup & measuring spoon
 - baking soda
 - liquid dish soap
 - a clear cup for the reaction

What to do:
 1. Roll the lemons on the counter like a dough. This releases the juices inside the lemon.
 2. Cut the lemon in half, and carefully squeeze out the juice in to a measuring cup. Note how much juice was created from each lemon, and put the juice aside.
 3. Into the empty glass place one tablespoon of baking soda.
 4. Add one teaspoon of liquid dish soap to the baking soda. Stir these up a bit.
 5. Pour the lemon juice into the cup and stir. Now watch the lemon suds erupt!

How does it work?
 This is a classic example of acid-base reaction. This is often done with vinegar and baking soda. The baking soda (a base) and the lemon juice (an acid) combine to release carbon dioxide gas. The liquid soap turns the bubbles into foam that often erupts right out of the glass.