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Elements, Compounds and Mixtures
Mixtures - Separation Techniques - Crystallisation.
A solid which has
dissolved in a liquid (called a
solution)
can be separated by crystallisation.
The dissolved substance is called the
solute.
The liquid used for dissolving is called the solvent.
The solution is warmed in
an open container,
allowing the solvent to evaporate, leaving a saturated solution.
A solution which has as much
solid dissolved in it
as it can possibly contain, is called
a saturated
solution.
As the saturated solution is allowed to cool,
the solid will come out of the solution and crystals
will start to grow.
The crystals can then be collected and allowed to dry.
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