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Volcano
Materials:
- Organic Play-dough
- 1 plastic glass or small bowl
- 2tbs of baking soda
- food coloring
- 1tbs of liquid soap
- 1cup of vinegar
Directions:
Mix the play-dough and shape it around the bowl to form a volcano. Inside the volcano, fill the glass with 2 tablespoons of baking soda, add your favorite food coloring, and 1 tablespoon of liquid soap. Carefully pour the vinegar into the glass and watch as the volcano erupts to the top.
Why is this happening?
By mixing vinegar (an acid) with baking soda (a base), a chemical reaction occurs, creating water, sodium acetate (a salt), and carbon dioxide (a gas). The carbon dioxide (CO2) is responsible for the eruption, and the bubbles are produced by the combination of soap and CO2.
Note:
For a bigger explosion, add more baking soda and vinegar. If you want more bubbles, add an extra tablespoon of soap.
“Why is this happening?” fits well as you’re explaining the process that the kids would be observing during the experiment.