If you add a teaspoon of sugar to a cup of hot coffee and stir, it will all dissolve. There is a limit, however, to the amount of sugar that will dissolve. You can't empty a dump truck full of sugar into the cup and expect it all to dissolve. A solution that contains the maximum amount of solute that will dissolve at a given temperature is saturated. If more can dissolve, it is unsaturated. This PowerPoint presentation examines solution saturation both qualitatively and quantitatively. Worksheets for this topic and reference tables containing saturation curves are available free of charge on my website at www.evanschemistrycorner.com.