Expert Film: Sam and Heather make some "elephant's toothpaste" through a catalysed reaction.

This video demonstrates an exciting experiment called 'Elephant's Toothpaste', where hydrogen peroxide decomposes rapidly into water and oxygen, creating a colourful foam. Using potassium iodide as a catalyst, along with food colouring and washing-up liquid, learners can explore chemical decomposition and the role of catalysts in reactions through a visually engaging activity.