sci y7 particles

What you'll learn

1. 1

   Imagine a whole pizza 🍕. Now picture it being chopped into smaller and smaller bits until you can't chop anymore — those tiny bits are called particles!

2. 2

   Are particles big enough to see with your eyes? 👀

3. 3

   Tap the particles to see them move. In a solid, they are packed tightly together and just vibrate.

4. 4

   Let's think about an ice cube melting into water. What happens to the particles? 🧊➡️💧

5. 5

   In a gas, how do the particles move? 🌀

6. 6

   Which state of matter has particles that are packed tightly in a fixed shape? 🧱

7. 7

   What happens to particles when a solid is heated? 🔥