8th grade Final review

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Across
  1. 1. Name of the element; listed under the atomic symbol
  2. 4. The element abbreviated as K
  3. 11. The element abbreviated as He
  4. 12. The element abbreviated as H
  5. 15. You can tell how many _________ ___________ there are in an element by looking at the group they are in.
  6. 17. The element abbreviated as Pb
  7. 18. The horizontal columns on the periodic table
  8. 20. The element abbreviated as S
  9. 21. The element abbreviated as Sn
  10. 22. An abbreviation of the element name, used to identify elements
Down
  1. 2. the number of a chemical element in the periodic system
  2. 3. The element abbreviated as Na
  3. 5. The element abbreviated as Mn
  4. 6. The element abbreviated as Au
  5. 7. The vertical columns on the periodic table
  6. 8. The element abbreviated as Ag
  7. 9. The element abbreviated as Mg
  8. 10. The periodic table consists primarily of _____________.
  9. 13. The element abbreviated as Hg
  10. 14. The mass of an atom or a molecule
  11. 16. The element abbreviated as Kr
  12. 19. The element abbreviated as O