| A | B |
|---|
| Electron dot diagram | A diagram of an atom, ion or molecule in which each dot represents a valence eletron |
| Ion | An atom or group of atoms that has a positive or negative charge |
| Anion | An ion with a negative charge |
| Cation | An ion with a positive charge |
| Chemical bond | The force that holds atoms or ions together as a unit |
| Ionic bond | The force that holds cations and anions together |
| Chemical formula | Notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compund |
| Crystals | Solids whose particles are arranged in a lattice structure |
| Covalent bond | A chemical bond in which two atoms share a oair of valence elctrons |
| Molecule | A neutral group of atoms that are joined together by one or more covalent bonds |
| Polar covalent bond | A covalent bond in which elctrons are not shared equally |
| Polyatomic ion | A covalently bonded group of atoms that has a positive or negative charge and acts as a unit |
| Metallic bond | The attraction between a metal cation and the shared electrons that surround it |
| Alloy | A mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal |
