| A | B |
|---|
| allotrope | any of two or more molecules of a single element that have different crystalline or molecular stuctures. |
| anhydrous | a compound in which all water has been removed, usually by heating. |
| binary compound | a compounds that contains only two elements |
| deliquescent | a substance that takes up enough water from the air that it dissolves completely to a liquid solutions |
| distillation | the method of separating substances in a mixture by evaporation of a liquid and subsequent condensation of its vapor. |
| formula unit | the simplest ratio of ions in a compound. |
| hydrate | a compound in which there is a specific ratio of water to ionic compound. |
| hydrocarbon | a organic compound that consists of only hydrogen and carbon |
| hygroscopic | a substance that absorbs water molecules from the air to become a hydrate |
| inorganic compound | a compound that does not contain carbon |
| molecular element | a molecule formed when atoms of the same element bond together |
| organic compound | a compound that contains carbon; a few exceptions exist |
| oxidation number | the charge on an ion or an element; can be positive or negative |
| polyatomic ion | an ion that consists of two or more different elements |
