Across
- 4. changes things forever
- 7. can cut deep canyons in the Earth
- 8. what you need to separate salt and sand
- 9. is a metal
- 10. we can change matter by _______ it
- 11. will only melt when it gets very, very hot
Down
- 1. sometimes matter changes
- 2. all ______ can change
- 3. we can change matter by _______ it
- 5. iron and steel can __________
- 6. when you stir salt into a glass of water