Solutions

• Concentrated solutions have alot of solute
• A solution is made when to substance mix together
• This substance dissolved is called solute
• The substance that does the dissolving is the solvent (water)
•  A concentrated solution is one that has a relatively large amount of dissolved solute. A dilute solution is one that has a relatively small amount of dissolved solute.
• Evaporation is used to separate a soluble solid and a liquid, e.g. salt and water. It involves

  heating the solution until the solvent (liquid) evaporates, leaving the solute (solid) behind.
• A mixture consists of two or more substances

  mingled together but not chemically combined. (Air is a mixture of gases)
• Filtration is used to separate an insoluble solid from a liquid, for example soil and water. Filtration involves the use of a sieve or filter paper. Filter paper contains tiny pores which allow

  tiny particles through but block large ones.
• Distillation is a method of separation that can be used on a soluble solid and its solvent,

  or two miscible liquids (liquids that mix).
• Chromatography

  Paper chromatography can be used to separate mixtures of substances that are in solution.The different substances move through the paper at different rates or speeds. They are carried by

  a suitable solvent.