ELEPHANT’S TOOTHPASTE: An impressive experiment you can try at home

SAFETY TIP: This experiment requires adult supervision. Make sure to wear dishwashing gloves and safety glasses. WHAT YOU NEED: - Dishwashing gloves - Safety glasses - 100 mL, 6% Hydrogen Peroxide (available from most chemists) - Measuring cup - 500 mL PET bottle - Funnel - Plastic tray or large baking dish - Dishwashing detergent - Food colouring (any type except cochineal) - Small cup - Sachet of dry yeast - Tablespoon - Lukewarm water - Optional pop-top for extra height WHAT’S HAPPENING? The activity is called ’Elephant’s Toothpaste’ because the large stream of foam looks like toothpaste that is big enough for an elephant! The foam is made as the dishwashing detergent traps tiny oxygen bubbles created by the chemical reaction. For more information and investigations, check out our website: