Periodic Elements

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Across
  1. 1. the ____ man
  2. 4. bright lights
  3. 5. Silver and _______
  4. 7. can be used for coal
  5. 8. can be found in a balloon
  6. 12. __________ foil
  7. 14. the lightest element
  8. 15. atomic number is 29
  9. 18. baking soda
  10. 19. Superman's planet
Down
  1. 2. ______ Man
  2. 3. a low-abundance element
  3. 6. this is used to treat bipolar disorder
  4. 7. mix of metal and silver
  5. 9. a heavy metal
  6. 10. toothpaste
  7. 11. metal that sticks together
  8. 13. pool water
  9. 16. the air we breathe in
  10. 17. 2nd place metal