Across
- 2. Solid
- 6. Space
- 7. WaterVapor
- 10. Condensation
- 11. Liquid
- 12. Shape
- 13. Ice
- 14. Melting
- 19. Evaporation
- 20. Size
- 21. Freezing
Down
- 1. Volume
- 3. Breaking
- 4. Balance
- 5. Heating
- 8. Water
- 9. Gas
- 10. Centimeter
- 15. Cooling
- 16. Color
- 17. Matter
- 18. Mass
