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saturated describes a stable solution that contains the maximum quantity of a solute that can be dissolved at a given temperature solubility the maximum quantity of a substance that will dissolve in a certain quantity of water at a given temperature unsaturated describes a solution that contains less dissolved solute than the solvent can normally hold at a temperature supersaturated describes a solution that holds more than the maximum quantity of a solute that can be dissolved at that temperature solubility curve the graphical representation of the relationship between the temperature and solubility solute the dissolved substance solvent the dissolving agent reagent a chemical agent for use in chemical reactions reference a solution which is known to contain an ion control a solution which is know not to contain an ion like distilled water independent variable the variable that the experimenter himself controls (i.e. temperature) in the experiment; grahped on the x axis dependent variable the variable whos values change as a result of the values chosen for the independent variable (i.e. the solubility); graphed on the y axis