The document discusses key concepts around concentration and solubility including: - Solubility is defined as the physical property of being able to dissolve a substance, while insolubility is the inability to dissolve. - Factors that increase the rate of dissolution of a solid in liquid include stirring the solution, grinding up the solid, and heating the solution. - Solutions can be saturated, unsaturated, or supersaturated depending on the amount of solute dissolved relative to the maximum amount that can dissolve at a given temperature. - Concentration is a measure of the amount of solute dissolved in the solvent.

2. Concentration November 19, 2008

15. % by volume = volume of solute volume of solution X 100 % by mass = mass of solute mass of solution X 100