Across
- 3. Resistant
- 5. Happens in a freezer
- 6. Water as a gas
- 8. Changes liquid to gas
- 11. Opposite to softness
- 13. Something you can't see
- 16. Energy of motion
- 18. Movement
- 19. A word for Weight
Down
- 1. Liquid to gas
- 2. Thin flowing
- 4. Volume when it's placed under pressure
- 7. Structure of elements
- 9. Moving really fast
- 10. A type of gas
- 12. Strong
- 14. Have vibrating particles
- 15. Happens in a kettle
- 17. Black and white