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An insoluble solid is a solid which doesn’t dissolve in a liquid, e.g. a soil in water


Filtration is a way of separating an insoluble solid from a liquid


Equipment:

A solution of soil and water, filter paper, filter funnel, conical flask and beaker.



Procedure:

Carefully pour the solution into the conical flask – the water will flow through, leaving just the soil behind.



A soluble solid is a solid which dissolves in a liquid, e.g. a sugar in water

Evaporation is used to separate a soluble solid and a liquid

The problem is that you lose the liquid.

Procedure:

Simply heat the mixture (e .g. water and salt) – the water will evaporate, leaving just the salt behind.

Distillation


Distillation can be used to separate a soluble solid and a liquid (and you get to keep both)



Distillation can be used to separate two miscible liquids with different boiling points (and you get to keep both)

Two miscible liquids are liquids which mix together, e.g. alcohol and water.



A: Thermometer

B: Water out to sink

C: Condenser

D: Cold water in

E: Tripod stand

F: Bunsen burner



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