Periodic Table Crossword

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Across
  1. 3. negative particle
  2. 5. most abundant mineral in the human body
  3. 7. form positive ions/has metallic bonds
  4. 9. the basic unit of a chemical element
  5. 10. uncharged atomic particle
  6. 12. 17th group of the periodic table
  7. 13. light and strong
  8. 14. yellow-green gas at room temperature
Down
  1. 1. made the periodic table of chemical elements
  2. 2. central figure of atomic theory
  3. 4. a group
  4. 6. same number of protons/different number of neutrons
  5. 8. physics particle
  6. 10. doesn't produce electricity
  7. 11. controls/regulates the activities of the cell