What is a chemical reaction?
The Swap Game
What is a chemical reaction?
Look closely at a piece of toast. A minute ago it was pale, soft bread. Now it's golden, crunchy, and smells completely different. Something happened in that toaster — not a magic trick, but a chemical reaction. And once you know what one is, you start seeing them everywhere.
Everything around you is built from tiny building blocks called atoms. Atoms clump together into little groups called molecules — think of them as Lego creatures, each made of a few atoms snapped together in a particular shape.
