Make Elephant Toothpaste

Materials

• 12ox plastic bottle

• Yeast

• Hydrogen peroxide (3%)

• Dish soap

• Warm water

• Baking soda

Directions

1. Add dry yeast to warm water and wait a few minutes until it becomes frothy.

2. Pour 2 inches of hydrogen peroxide into the bottle.

3. Place bottle on baking sheet.

4. Squeeze in a good squirt of dish soap.

5. Pour in yeast solution (3 tablespoons).

6. Watch

What’s Happening

Yeast contains an enzyme called Catalase that breaks down hydrogen peroxide (H2O2) into oxygen gas and water. The oxygen gas gets trapped by the soap, and you get a large foamy solution that squirts out of the top of the bottle.

adapted from Imagination Station Toledo