Bytesize Demo: Elephant's Toothpaste @BytesizeScience

Uploaded January 2012 | Updated September 2026, 15 hours ago

Hydrogen peroxide is constantly breaking down into water and oxygen, though it isn't the most exciting reaction to watch. But add a little dish soap and a catalyst called potassium iodide, and suddenly you get the eruptive, awesomely messy reaction known as Elephant's Toothpaste!

Produced by the American Chemical Society

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