| A | B |
|---|
| atom | smallest part of any element that retains all the properties of that element |
| chemical bonding | ctwo or more atoms combine to form new substances |
| valence electron | an electron in the outermost energy level of an atom. |
| ionic bonding | bonding that involves the transfer of electrons |
| ion | an atom that has become charged due to the loss or gain of electrons |
| ionization | the process of removing electrons and forming ions |
| ionization energy | energy required for ionization |
| electron affinity | tendency of an atom to attract electrons |
| crystal lattice | a regular, repeating arrangement of atoms |
