- Soluble means something dissolves, and insoluble means something doesn't dissolve.
- The solubility of a substance in a given solvent is the number of grams of the solute (usually a solid) that dissolve in 100g of the solvent (the liquid) at a particular temperature.
- The solubility of (solid) solutes usually increases with temperature.
- A saturated solution is one that cannot hold any more solid at that temperature - and you have to be able to see solid at the bottom to be certain that it's saturated.
- Solubility Curves show when a solution is saturated
- A solubility curve plots the mass of solute dissolved in a saturated solution at various temperatures.
- The solubility of most solids increases as the temperature increases.