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