periodic table

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Across
  1. 3. elements are the building blocks of
  2. 6. who created the periodic table
  3. 7. z is for
  4. 10. elements are grouped into
  5. 13. h is for
  6. 14. table table of all elements organized to relate to one another
  7. 16. what do we need to live
  8. 17. eighteen how many elements are there
  9. 18. atoms came from the greek word meaning
  10. 19. how did he know there were missing elements
Down
  1. 1. that make up about almost everything
  2. 2. masson the bottom of the elements name
  3. 4. are found in the nucleus
  4. 5. how many families are on the periodic table
  5. 8. how were the elements organized
  6. 9. f is for
  7. 11. properties what is weight of standard samples of elements
  8. 12. in the top left of the element
  9. 15. unchangable substances