| A | B |
|---|
| Proton | Has a mass of about 1 amu and a positive charge |
| Electron | Has a mass of about .00055 amu and a negative charge |
| Neutron | Has a mass of about 1 amu and no charge |
| Isotope | Same number of protons, a different number od neutrons |
| Atomic number | The number of protons in the nucleus |
| Atomic mass | the weighted average of the naturally occuring isotopes |
| Nucleon | A particle residing in the nucleus (i.e. proton or neutron) |
| AMU | A mass unit used to describe the mass of a nuclear size particle |
| Ion | A charged particle |
| Cation | A positive ion |
| Anion | A negative ion |
| Strong force | sometimes called nuclear "glue" |
