Vinegar and Baking Soda Volcano
Chemical reactions (acid-base interaction producing carbon dioxide gas).
Baking soda Vinegar Empty plastic bottle or jar Food coloring (optional) Dish soap (optional), Tray or plate.
Place the bottle on the tray. Add 2 tablespoons of baking soda, a squirt of dish soap (for extra fizz), and a few drops of food coloring. Pour in about 1/4 cup of vinegar and watch the eruption!
Eco-Twist: Reuse an old container for the volcano base, and compost any leftover baking soda mix if it’s free of soap.