First 20 Elements

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Across
  1. 2. O We need this gas to breathe
  2. 3. Be in precious stones
  3. 5. Cl Cleans your pool
  4. 7. N Main gas in the air
  5. 9. Al Foil is made of this
  6. 10. Na In salt
  7. 12. H Smallest Element
  8. 14. P Matches and flares
  9. 16. Ca Keeps bones strong
  10. 17. Li In medications
Down
  1. 1. He In Balloons
  2. 3. B Light sports equipment
  3. 4. Si Fake body parts
  4. 6. Ne In lights and signs
  5. 8. F In toothpaste
  6. 9. Ar Light bulb gas
  7. 11. Mg in light car wheels
  8. 13. K In bananas, starts with P
  9. 15. S Rotten egg smell
  10. 16. C Our bodies