water

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Across
  1. 3. living things need water
  2. 7. earth would look like the moon without water
  3. 9. percent of the water on earth is salt water
  4. 12. can live several weeks without food but can only live a few days without water
  5. 13. is a chemical
Down
  1. 1. effect:hydrogen bonding in water
  2. 2. colorless,odorless,tasteless gas;but highly explosive
  3. 4. colorless,odorless,tasteless gas;but combustible
  4. 5. percent of the world is covered in water
  5. 6. reaction between hydrogen and oxygen to form water
  6. 8. pools have 2 times more chlorine than in drinking water
  7. 10. percent of the water on earth is glacier ice
  8. 11. than two percent of all water on earth is usable fresh water
  9. 12. water contains calcium and magnesium