What is the maening of separation methods

Processes used in separation of a substance into its components and the removal of impurities.

Methods of separation include:

1. Paper chromatography - used in food industry to identify chemicals namely food coloring agents or inks.

2. Filtration - commonly used to separate an insoluble solid from a liquid e.g. sand from water.

3. Evaporation -   used in separating a mixture of a soluble solid and a solvent through heating until the solvent evaporates leaving behind the solid residue.

5. Magnetism - used to separate a mixture of two solids with one of them having magnetic properties. Gold can be separated from iron using this method.

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