| Term | Definition |
|---|
| atom | smallest unit of an element |
| element | smallest unit of life |
| molecules | formed from a number of atoms joined together, forming the smallest particles |
| diatomic | a molecule that contains two atoms |
| compounds | made up of more than one element, chemically bound together |
| relative atomic mass | weighted mean of all naturally occurring isotopes of an element relative to one-twelfth of a Carbon-12 atom |
| relative molecular mass | sum of a compounds' relative atomic masses |
| empirical formula | the simplest whole number of ratio of atoms of each element in a particle of the substance |
| molecular formula | the actual number of atoms of each element in a molecule of the substance |
| spectator ion | a certain part of a reaction that is left unreacted |
| limiting reagent | determines the amount of product that can be formed in a reaction |
| excess reagent | more than enough to react with a limiting reagent |
| solute | a substance that is dissolved into another |
| solvent | a substance that dissolves another |
| solution | consists of a solute dissolved in a solvent |
| concentration | a measure of the amount of dissolved substance per unit of volume |
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