Periodic Table

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Across
  1. 2. Common model used to represent an atom.
  2. 4. What does the element K stand for?
  3. 5. Number Sum of the protons and neutrons.
  4. 8. What does NaCl stand for?
  5. 9. How many families are on the periodic table?
  6. 11. Creator of the table.
  7. 12. The rows in the periodic table.
  8. 13. The columns that share chemical properties.
Down
  1. 1. Atoms of the same element that have different numbers or neutrons.
  2. 3. Element that goes by Ds.
  3. 5. Along stair step line.
  4. 6. Right of stair step line.
  5. 7. Number number of protons an atom has.
  6. 10. Special element because it is on the left side of the stair step line.