| − | '''Concentration''' is a measurement of how much substance exists within a certain volume.<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref> | + | '''Concentration''' is a measurement of how much substance (or solute) exists within a certain volume (or solvent).<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref> A solution is said to be saturated when the solvent is unable to dissolve more solute. |