Chemistry

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Across
  1. 3. sodium chloride
  2. 7. a non-metal with another non-metal
  3. 9. group 17 period 2 element
  4. 11. a metal(or ammonium)with a nonmetal
  5. 14. has the same atomic #(Z) and different mass #(A)
  6. 15. net charge on a compound
  7. 16. group 16 period 2 ion
Down
  1. 1. group 1 period 4 element
  2. 2. alkali-earth metal period 4
  3. 3. subatomic particle with no charge
  4. 4. metals in group 1
  5. 5. subatomic particle with a negative charge
  6. 6. one or more atoms with a net charge
  7. 8. subatomic particle with a positive charge
  8. 10. charge on a cation
  9. 12. the quantity of matter in a physical body
  10. 13. charge on an anion