The Great Elephant Toothpaste Experiment! | Summer Experiments | SciShow Kids

The video explores the concept of mixtures and chemical changes using a fruit salad and a fun experiment. It begins with a discussion about favorite fruits for a fruit salad, highlighting that mixing fruits doesn't change their properties. The video then introduces chemical changes, where mixed substances form something new, demonstrated through an experiment creating a foamy substance resembling toothpaste. Safety precautions are emphasized, and the experiment involves mixing yeast, warm water, dish soap, and hydrogen peroxide. Observations reveal a chemical reaction, evidenced by foam and heat, illustrating irreversible changes, unlike reversible ones like freezing and melting water.

What observations were made about the yeast and water mixture before adding it to the bottle?

What happens to the temperature of the bottle during the chemical reaction?

Can you think of any other examples of irreversible changes besides the chemical change described?