1. Saturation of Solutions  A solution that contains the maximum amount of solute that may be dissolved under existing conditions is saturated.  A solution that contains less solute than a saturated solution under existing conditions is unsaturated.  A solution that contains more dissolved solute than a saturated solution under the same conditions is supersaturated.

2. Solubility SATURATED SOLUTION no more solute dissolves UNSATURATED SOLUTION more solute dissolves SUPERSATURATED SOLUTION becomes unstable, crystals form concentration

3. Solution Concentration Mass percent - the ratio of mass units of solute to mass units of solution, expressed as a percent Concentration - the amount of solute in a substance per volume of solution = (solute + solvent). parts per million (ppm) 1.0 x 10 -6 -- commonly used for minerals or contaminants in water supplies.

4. 1.A sugar solution contains 55g of sugar in 2 L of solution. What is the concentration in g/L? 2.A solution contains 115g/L of corn syrup per solution. How many grams of corn syrup are in 2.5 L of solution? 3.25g of sugar are dissolved in 100g of solution. What is the percent by mass of sugar? 4.125g of potassium nitrate are dissolved in 300g of water. What is the percent by mass of potassium nitrate? 5. How many grams of sodium fluoride are in 300g of a solution that is 25% sodium fluoride by mass? Concentration = mass of solute volume of solution Concentration = mass of solute volume of solution Concentration = mass of solute mass of solution X 100 Concentration = mass of solute mass of solution X 100