| A | B |
|---|
| octet rule | have a full valance shell w/ 8 electrons |
| when an atom loses electrons it is a | positive ion |
| when an atom gains electrons it becomes a | negative ion |
| ionic bonds are formed when | positive and negative ions attract |
| Lewis electron dot diagrams are used for | representing the valence shells |
| covalent bond | the sharing of a pair of electrons by two atoms. |
| nonpolar covalent bond | 2 atoms sharing electrons equally |
| polar covalent bond | electrons are shared unequally |
| dipole | a molecule having a positive and a negative end |
