Water on Earth

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Across
  1. 3. What is the symbol for water?
  2. 5. This liquid has 15,000 times more chlorine than drinking water.
  3. 7. Water which contains calcium and magnesium(minerals)and causes spots to show up on a glass container.
  4. 10. What percent of water on earth is glacier ice?
  5. 11. the best team in the NFL?
  6. 14. What percent of water on earth is salt water?
  7. 15. Without water our earth would like what thing out in space?
Down
  1. 1. What is the symbol for iron?
  2. 2. A two letter abbreviated word to help us measure substances in water.
  3. 3. A colorless, odorless, tasteless but highly explosive.
  4. 4. Less than what percent on earth is fresh water?
  5. 6. This is added to drinking water to kill bacteria and control algae.
  6. 8. This element creates a bluish-green stains and scale on pipes.
  7. 9. What percent of water is on earth?
  8. 12. This element reacts with oxygen which can cause rust.
  9. 13. A colorless, odorless, tasteless gas;combustible.