Bonding

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Across
  1. 1. the number of electrons in the outer shell that do the reacting
  2. 3. the number of energy shells in the atom
  3. 4. on the left of the periodic table
  4. 8. number the total number of protons = to the number of electrons
  5. 10. a charged atom that has gained or lost an electron
  6. 11. the type of bond forming between two non metals
Down
  1. 2. when an atom loses an electron it forms this kind of ion
  2. 5. mass the total number of electrons plus protons
  3. 6. when an atom gains electrons it forms this kind of ion
  4. 7. on the right of the periodic table
  5. 9. the type of bond forming between metals and non metals