| A | B |
| no-charged particle | provides a buffer between protons within the nucleus |
| electron | negatively-charged subatomic particle |
| proton | positively-charged subatomic particle |
| neutron | subatomic particle with no magnetic charge |
| nucleus | center of the atom, contains protons and neutrons |
| sub-atomic particle | the parts of an atom |
| positively-charged particle | identifies the type of atom |
| negatively-charged particle | responsible for atoms joining into molecules |