CHEMISTRY ELEMENTS

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Across
  1. 3. this is the most expensive element
  2. 4. the only unreactive elements
  3. 7. this is the gas we breathe out
  4. 8. this is a halogen used in swimming pools
  5. 9. this is made by reacting calcium and fluorine
  6. 10. the gas required for burning
  7. 11. this is the most reactive metal
  8. 13. this is the most common solvent
  9. 14. burns with a bright white light
Down
  1. 1. this gas burns with a pop
  2. 2. the lead in the pencil
  3. 5. this is the chemical name for salt
  4. 6. strong and light and is used to make aircraft
  5. 12. the name of group one on the periodic table
  6. 15. this metal rusts