| A | B |
|---|
| chemical bond | an attractive force between atoms or ions that occurs when atoms transfer or share electrons |
| covalent bond | a chemical bond formed by atoms that are sharing one or more electrons |
| ionic bond | a chemical bond in which one atom loses an electron to form a positive ion and the other atom gains to electron to form a negative ion |
| ion | a particle that has an electric charge other than zero, created when an atom gains or loses electrons |
| cation | a positively charged ion |
| anion | a negatively charged ion |
| element | a substance that consists entirely of one type of atom |
| compound | a substance that contains two or more different elements chemically joined |
| molecule | two or more atoms held together by covalent bonds |
| inert | unable to form chemical reactions |
| reactive | able to form chemical reactions |
| noble gasses | the inert elements in group 8A (Group 18) that have stable (full) valence electron energy levels and therefore do not readily form chemical reactions |
