Elements in the Periodic Table

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Across
  1. 1. alkali metal used in bicycles, found in period 4
  2. 6. used in smoke detectors, it is an actinide metal towards the very end of the chart
  3. 8. white waxy glowing substance found in our bones, nonmetal; found in the first 20 elements.
  4. 9. noble gas that makes 78% or our air, found in muscles, protein and DNA; somewhere in the first 20 elements.
  5. 10. used in nuclear weapons 94
  6. 12. found in fruits and vegetables, an alkali metal in period 4
  7. 14. rare earth metal used in telescope lenses
  8. 18. a transition metal that is used in cutting tools, drill bits, gun barrels, hard steel; found in period 5
  9. 19. a very soft, poor metal used in LED lights; found in period 4
  10. 21. a halogen used as disinfectant, found in period 5
Down
  1. 2. found in plants 12
  2. 3. found in stone, sand and soil; a metalloid within the first 20 elements.
  3. 4. used in MRI machines, a rare earth metal between 60-70
  4. 5. rare earth metal used in torchworker's glasses, found toward the bottom of the table
  5. 7. a halogen used in cancer medicines, found in period 6
  6. 11. strongest, lightweight metal; found in period 4
  7. 13. noble gas used in flashlights, headlights and lanterns
  8. 15. transition metal found in period 6, used in thermometers, highly toxic on contact with skin
  9. 16. this element only has one electron and one proton, it is found in stars everywhere in the universe, found in period 1
  10. 17. found in period 6, used in mobile phones, a transition metal
  11. 20. a poor metal found in liquid crystal displays (LCDs); found in period 5