Periodic table review

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Across
  1. 4. Elements are arranged according to their ______ number.
  2. 5. The number of groups on the Periodic Table of Elements.
  3. 7. This element has the atomic number 8.
  4. 9. The rows that go left to right are called ______.
  5. 12. This element has the atomic number 16.
  6. 14. The side of the Periodic Table the metals are on.
  7. 15. The line that separates the metal and non-metals is shaped like _____.
Down
  1. 1. The second letter in the atomic symbol is always _____.
  2. 2. The atomic number is equal to the number of _____ in the nucleus.
  3. 3. Gold is a ______.
  4. 6. Chlorine is a _________.
  5. 8. The columns that go up and down are called _______.
  6. 10. The side of the Periodic Table the non-metals are on.
  7. 11. The number of periods on the Periodic Table of Elements.
  8. 13. The first letter in the atomic symbol is always _____.