Across
- 1. extremely rare gas
- 4. in food/supplements for animals
- 7. can cause kidney damage if consumed
- 9. unworkable metal
- 10. the body only needs small amount
- 12. is in milk
- 14. colorless,odorless,and tasteless
- 15. silvery white and moderately soft metal
Down
- 2. used in vacuum tubes
- 3. used to make bones stronger
- 5. electrical measurement
- 6. mildly toxic towards humans
- 8. silver wrap to cover foods
- 11. material used in nuclear plants
- 13. mainly in grains and vegetables