Filtration & Crystalisation

This lesson covers:

  1. The definitions of solute, solvent, and solution
  2. The processes of filtration, evaporation, and crystallisation

A small amount of sodium chloride is dissolved into a beaker of water. Which of the following is the solvent?

Water

Beaker

Sodium chloride

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simple / indivisible / soluble / insoluble 


Solid substances that can dissolve in liquids are described as . 


Solids that cannot dissolve are described as . 

soluble
insoluble

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Illustration of a Bunsen burner with a flame.

True or False? Filtration involves using a Bunsen burner flame to evaporate a solvent from a solution.

True

False

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Illustration showing a liquid droplet passing through a filter while a solid cube is blocked.

Filter paper is full of small holes that are large enough to allow liquid particles to move through, but too small to allow solids through. This separates the solids from the liquids in filtration.

Diagram showing the process of obtaining salt from a salt solution.

What is the best method to obtain a sample of salt from a salt solution?

Fractional distillation

Filtration

Evaporation

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Describe how you would carry out the process of crystallisation.

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Illustration of a beaker containing pieces of rock in a salt water solution.

How would you separate pieces of rock from a solution of salt water?

Evaporation 

Crystallisation 

Filtration 

Distillation

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