Match the following:
Part A
1. electrically charged atom or group of atoms formed by the loss or gain of electrons
2. the union between atoms by the interaction of their electrons in the outermost orbit
3. atoms of elements or compounds interact to form at least one new compound
4. the number of electrons lost or gained to complete an element's outer shell
5. a bond formed by the electrical attraction between two oppositely charged ions
Part B
a. ion
b. ionic bond
c. chemical reaction
d. valence
e. chemical bond