Across
- 3. - colorless, odorless, tasteless gas, but combustible
- 5. - Humans can go several weeks without it
- 10. Water - 1% of water on earth
- 12. Water - 97% of worlds water
- 13. Ice - 2% of water on earth
- 14. - very small particle
Down
- 1. - water is 83% of our
- 2. - mixture of Hydrogen and Oxygen
- 4. - liquid turning into gas and releasing into the atmosphere
- 6. - Particles getting smaller in water
- 7. - colorless, odorless, tasteless gas, but very explosive
- 8. - molecules in it are free to move
- 9. Vapor - moves fastest around 100 degrees Celsius
- 11. water is 70% of our