Volcanoes

Materials:
Baking Soda
Vinegar
Dish Soap
Food Coloring
Small Bowls or Test Tubes
Directions:
1. Cover bottom of bowl or test tube with baking soda.
2. In measuring cup combine ¼ cup vinegar, 2 big drops dish soap, and food coloring.
3. Pour soapy mixture into bowl or test tube of baking soda.

Variations:
What happens without dish soap?
What happens with less baking soda and more vinegar?
What happens with less vinegar and more baking soda?

Make a paper mache volcano to surround your test tube for a “real” volcano.