Across
- 2. H + 2)
- 4. you breathe it
- 5. you need it for your body
- 7. C + O2
- 8. amount of space an object occupies
- 12. takes the shape of its container and can be compressed
- 15. makes voice high
- 17. a colour and element
- 19. in toothpaste
- 20. Ag
Down
- 1. in pools
- 3. is also a planet
- 6. gas that smells bad
- 9. takes the shape of its container, cant be compressed
- 10. group of atoms
- 11. join up to make molecule
- 13. a part of water
- 14. cant be compressed
- 16. frozen water
- 18. amount of matter