Solution Facts



  • A cup of tea is made up of the solvent, water, and a number of solutes: the tea, milk and perhaps sugar. A highly saturated solution produces strong, sweet tea. A poorly saturated solution produces weak tea.
  • Tap water is rarely pure water; it usually contains invisible traces of other substances. This makes it a solution.
  • A solution is a liquid that has a solid dissolved within it.
  • When a solid dissolves, its molecules separate and mix completely with the molecules of the liquid.
  • The liquid in a solution is called the solvent.
  • The solid dissolved in a solution is the solute.
  • The more of a solid that dissolves, the stronger the solution becomes until at last it is saturated and no more will dissolve. There is literally no more room in the liquid.
  • If a saturated solution is heated the liquid expands, making room for more solute to dissolve.
  • If a saturated solution cools or is left to evaporate, there is less room for solute, so the solute is precipitated (comes out of the solution).
  • Precipitated solute molecules often link together to form solid crystals.