| A | B |
|---|
| Nucleus | Has protons and neutrons. |
| Proton | Has a positive charge. |
| Neutron | No charge. |
| Electrons | They orbit around the nucleus in shells. |
| Valence Shell | The last outermost shell in an atom. |
| Conductors | Atoms with just 1 or 2 electrons in their valence shell usually make good? |
| Semiconductors | Can be altered to function as either a conductor or insulator. |
| Electron | Has a negative charge. |
| Ionization | The process of gaining or losing electrons. |
| Electrostatic Force | It keeps the electron in orbit around the nucleus. |
| Free Electrons | Are electrons that have escaped the atom. |
| Balanced Atom | Has an equal amount of electrons and protons. |
| Eight | The maximum electrons that can exist in a valence shell. |
| Negative Ion | An atom that has gained an electron. |
| Positive Ion | An atom that has lost an electron. |
| Electronics | The process of controlling or putting free electrons to work. |
