Experiment 4: Elephant Toothpaste!

The Experiment

The Results

A nice gush of pink foam.

How To Make Elephant Toothpaste

1. Put on your science goggles, science gloves and science coat.  Hydrogen Peroxide is a bleaching agent, so cover up!
2. Mix 100 ml of Hydrogen Peroxide 6%, a tablespoon of washing-up liquid and some food colouring into a bottle.
3. Mix 1 tablespoon of Dry Yeast and 3 tablespoons of warm water in a jug and allow to stand for 30 seconds or so.
4. Remove any lumpy bits from the yeast solution.
5. Pour the remaining yeasty liquid into the bottle.
6. Enjoy!

The Science

The yeast acts as a catalyst breaking down the Hydrogen Peroxide and releasing the Oxygen.  The washing-up liquid in the water traps the Oxygen creating bubbles.