Baking Soda Volcano

Build your own volcano and watch it erupt with a colorful foam explosion! You will learn how a chemical reaction happens when you mix an acid (vinegar) and a base (baking soda).

Tools

• spoon (1)

Materials

• plastic cup (1)
• water (approx. 1 cup)
• dish soap (1 squirt)
• food coloring (3-5 drops)
• baking soda (2-3 tbsp)
• vinegar (1/2 cup)
• building materials for volcano structure (such as dirt, sand, or clay)

Safety

• Protect work surface. Materials may stain clothing.
• Adult supervision required for children under 8.

Steps

1. Build a volcano structure around a plastic cup using dirt, sand, or clay. Ensure the cup is placed in the center and is stable so it does not tip over.
2. Fill the plastic cup about 2/3 full with water.
3. Add one squirt of dish soap to the water.
4. Add a few drops of red food coloring (or any color you prefer) to the mixture.
5. Add 2-3 tablespoons of baking soda to the cup.
6. Use the spoon to stir the mixture thoroughly.
7. Carefully pour the vinegar into the cup and watch the volcano erupt!