Across
- 2. Colorless, odorless, tasteless gas; combustible
- 6. Rain snow sleet or hail
- 8. Colorless, odorless, tasteless gas; highly explosive
- 10. Water that contains no minerals and has a pH of 7
- 12. Color of number 7 on the pH scale
- 13. Water supply available to humans (percentage)
- 14. Degrees at which water becomes a solid (celsius)
- 15. Creates blue and green stains and scale
Down
- 1. The amount of earth's surface that is covered in water
- 3. Scale from 1 to 10 that tells how acidic or hard water is
- 4. Amount of water on earth that is in glacier ice
- 5. Contains calcium and magnesium
- 7. Degrees at which water becomes vapor
- 9. A disinfectant that is used to clean water
- 11. Is naturally found in water and has the chemical symbol Fe