Periodic Table

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Across
  1. 1. medical life support
  2. 5. used for medical and dental implants
  3. 6. insoluble in water
  4. 8. used to promote relaxation and regulate melatonin
  5. 9. chemically manufactured for batteries and pigments
  6. 11. used to make a balloon float
  7. 12. used as a shielding gas in welding for Al and stainless steel
  8. 13. hard, brittle, metallic luster
  9. 15. used as a reducing agent in chemical manufacturing
Down
  1. 2. colorless and odorless
  2. 3. extremely reactive, toxic gas
  3. 4. used in electric wiring and food packaging
  4. 7. main component of DNA
  5. 10. used for bone and teeth health
  6. 14. very soft and reactive