| A | B |
|---|
| Fission | the nucleus of an atom splits into two smaller and more stable atoms |
| Fusion | two small atoms combine nuclei to create one larger atom |
| alpha particle | helium nucleus |
| beta particle | electron |
| gamma ray | energy |
| proton | positively charged subatomic particle found in the nucleus of atoms |
| neutron | neutral subatomic particle found in the nucleus of atoms |
| electron | negatively charged subatomic particle found in the electron cloud of atoms |
| ion | element that has gained or lost electrons |
| cation | positive ion |
| anion | negative ion |
| ionic bond | formed between a metal and a nonmetal when electrons are exchanged |
| covalent bond | forms between two nonmetals when electrons are shared |
| atomic number | number of protons |
| "A" column | number of valence electrons |
| binary compound | compound formed from 2 elements |
| ternary compound | compound formed from 3 elements |
| polyatomic ion | group of atoms with a charge |
