Across
- 2. amount of space
- 4. All matter is made of ___
- 5. When you heat particles, they move ___
- 7. takes up space
- 8. three ___ of matter: solid, liquid, gas
Down
- 1. heavy
- 3. There is little space between the particles
- 4. characteristic
- 6. most space between the particles
- 9. Particles are so ___ you can't see them.