Elephant Toothpaste

Objective:

• To explore the catalytic action created by the combining of yeast, hydrogen peroxide and dishwashing liquid

Kid Safe Elephant Toothpaste ‘Recipe’

• One 16 ounce empty plastic bottle, preferably with a narrow neck
• ½ cup 3% hydrogen peroxide
• Liquid dishwashing detergent (one squired is all you’ll need)
• One packet of dry active yeast dissolved in about 2 tablespoons of warm water –Prepare this before participants arrive for your session-
• A funnel
• A spoon to stir with
• A foil pan with fairly high sides