Chemistry

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Across
  1. 3. element symbol is O
  2. 5. electrons are shared unequally in a molecule
  3. 7. atom or group of atoms that has either a positive or negative charge
  4. 10. bonds with Na to form a salt molecule
  5. 13. ion made of more than 1 atom
  6. 16. element symbol is Pb
  7. 17. has an atomic number of 28
Down
  1. 1. element symbol is Cu
  2. 2. has an atomic number of 1
  3. 4. has an atomic mass of 20.179
  4. 6. element symbol is Ag
  5. 8. element symbol is Ca
  6. 9. element symbol is Fe
  7. 11. has an atomic number of 19
  8. 12. element symbol is Na
  9. 14. has an atomic weight of 39.948
  10. 15. atoms gain electrons and atoms lose electrons