It's easy to create your own batch of elephant toothpaste.

Materials

* 20-ounce plastic bottle

* Hydrogen peroxide

* Yeast

* Dishwashing liquid

* Warm water

* Plastic cup

Instructions

STEP 1: Fill the plastic bottle halfway with hydrogen peroxide.

STEP 2: Add some dishwashing liquid to the peroxide.

STEP 3: Mix a pack of yeast with the warm water.

STEP 4: Pour the yeast and water mixture into the bottle.

Explanation

The yeast quickly breaks down the hydrogen peroxide into oxygen and water. The dishwashing liquid mixes with the water and creates foam. As the oxygen is released it quickly pushes the foam out of the container creating elephant's toothpaste.

Jason Lindsey is a science outreach educator with Hooked on Science. Send him your science questions at jlindseyhookedonscience.com.