Across
- 4. two or more
- 7. changes to gas
- 9. shape
- 11. temperature
- 12. to air
- 14. makeup
- 15. solid
- 16. react
- 17. volume
- 18. spread throughout
Down
- 1. two different
- 2. solid to liquid
- 3. evenly mixed
- 5. gas
- 6. far apart
- 8. mixed together
- 10. Ice
- 12. atom
- 13. substance