The Chemistry Behind Elephant Toothpaste

Elephant toothpaste is not for brushing teeth but is actually a chemical reaction that creates a massive, steaming fountain of foam. By quickly breaking down hydrogen peroxide, it releases trapped oxygen gas to produce an instant avalanche of soap bubbles.

This experiment uses a catalyst to strip oxygen atoms from hydrogen peroxide at an incredibly high speed. The reaction also releases heat, making the foam warm to the touch as it rapidly expands out of the container. It is a favorite for science demonstrations because it feels like something a giant would use to scrub their teeth. You can even create this effect at home using simple yeast and household cleaners.