| A | B |
|---|
| Atomic Mass | protons + neutrons |
| Atomic Charge | protons - electrons |
| Atomic Number | protons |
| proton | positively charge particle |
| neutron | neutral particle |
| electron | negatively charged particle |
| travels outside the nucleus | electron |
| nucleus | contains protons and neutrons |
| ion | atom that has a charge |
| positive ion | atom with more protons than electrons |
| negative ion | atom with more electrons than protons |
| isotope | atoms with same number of protons but different neutrons |
| protons and neutrons | about the same mass size |
| atom | makes up everything in the universe |
