Chemical changes

What you'll learn

1. 1

   Imagine toasting a slice of bread 🍞. It goes brown, smells different, and you can't turn it back into white bread. That's a chemical change!

2. 2

   Is toasting bread a chemical change?

3. 3

   Watch the colour change as iron rusts — a classic chemical change.

4. 4

   Is burning a candle a chemical change? 🕯️

5. 5

   Which of these is a chemical change?

6. 6

   Mix baking soda and vinegar in this beaker — watch the bubbles! 🧪

7. 7

   What is a sign of a chemical change?