| A | B |
|---|
| an atom or group of atoms that is electrically charged | ion |
| the attraction between two oppositely charged ions | Ionic bond |
| an ion that is made of more than one atom | Polyatomic ion |
| an orderly, three-dimensional pattern of ions or atoms in a solid | Crystal |
| a chemical bond formed when two atoms share electrons | Covalent bond |
| a chemical bond formed when two atoms share two pairs of electrons with each other | Double bond |
| a compound consisting of molecules of covalently bonded atoms | Molecule |
| the description of a covalent bond in which electrons are shared unequally, or of a molecule containing polar bonds that do not cancel out | Polar |
| the description of a covalent bond in which electrons are shared equally, or of a molecule containing nonpolar bonds or polar bonds that cancel out | Nonpolar |
| a naturally occurring solid that has a crystal structure and a definite chemical composition; a simple element, which is not organic, that is needed by the body | Mineral |
