Periodic Table

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Across
  1. 2. weightless
  2. 4. column
  3. 6. we live on it
  4. 9. None changeable substance
  5. 10. can get you wet
  6. 11. a picture that stands for something
  7. 14. responsive to certain actions
  8. 16. not hard but....
  9. 19. family
  10. 20. dense object
Down
  1. 1. takes up most of the periodic table
  2. 3. row
  3. 5. touches the line on the periodic table
  4. 7. period
  5. 8. has alot of weight
  6. 12. mass
  7. 13. a compact substance
  8. 15. very small
  9. 17. another word for column
  10. 18. something you can breath