Silmary Vicente vocabulary puzzle

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Across
  1. 3. charges of the elements
  2. 4. Particles like 6.023x1023
  3. 5. rows in the periodic table
  4. 9. the noble gases' eight outer shells
  5. 12. positive ions
  6. 13. number of protons
  7. 14. Negative charge
  8. 16. the mass of the mole
  9. 17. These can be metals and nonmetals
  10. 18. These are elements that aren't metals
Down
  1. 1. Expressing decimal numbers
  2. 2. columns on the periodic table
  3. 6. They are the 17 group
  4. 7. electrons in the outer shells
  5. 8. These are the metalloids
  6. 10. They are the 18 group
  7. 11. The mass of the element
  8. 15. Positive charge