Separating Mixtures

he method you choose to separate a mixture depends on the type of materials you have. The main methods are:

1. A mixture of solids – use sieving. E.g. separating sand and soil

2. A mixture of an insoluble solid and a liquid – use filtering E.g. separating tea leaves and tea

3. A mixture of a soluble solid in water – use evaporation E.g. salt in water

There are other ways too – for example if you have two materials and one is magnetic and the other is not you can use a magnet, or if you have two liquids like all and water you can decant them. Watch the video below for more ideas.

The details of each method of separation are explained in the PowerPoint below.

Follow these hyperlinks to learn more:-

  1. BBC Video on Separation Techniques
  2. BBC Bitesize Activity
  3. Science Made Simple Mixtures

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