ELEMENTS ON THE PERIODIC TABLE

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Across
  1. 3. is the second most abundant metal on Earth
  2. 5. is the most abundant mineral in the body
  3. 6. is a flavourless gas
  4. 7. is one of the densest of all metals
  5. 10. soft and white with a silvery lustre
  6. 12. is the most abundant element in the earth's crust
  7. 13. the simplest and most abundant element in the universe
  8. 15. occurs naturally in the earth, air and foods you eat
  9. 17. is a soft, silvery metal that rapidly tarnishes in air and reacts with water
  10. 19. is silvery, lustrous, soft, intensely radioactive
  11. 20. is used in television sets and lasers
Down
  1. 1. component of bones, teeth, DNA, and RNA
  2. 2. has the highest thermal conductivity of any element
  3. 4. has no odor, is tasteless, and colorless
  4. 8. has atomic number 82
  5. 9. is the most stable
  6. 11. can be used in cookware
  7. 14. a silvery white, moderately soft, ductile metal
  8. 16. revents barnacles from attaching to ships
  9. 18. is a silvery-white metal found naturally in the earth's crust