# How can mixtures be separated?

In this lesson, we will look at three different methods for separating mixtures: sieving, filtration and evaporation. We will learn when to use each one and plan our own experiment. You will need a pencil and a piece of paper for this lesson.

# How can mixtures be separated?

In this lesson, we will look at three different methods for separating mixtures: sieving, filtration and evaporation. We will learn when to use each one and plan our own experiment. You will need a pencil and a piece of paper for this lesson.

## Lesson details

### Key learning points

1. State three methods of separating mixtures
2. Select an appropriate separation technique for a given mixture
3. Plan an experiment to isolate components of a mixture

### Licence

This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

## Video

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## Starter quiz

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### 5 Questions

Q1.
Is sand soluble or insoluble?
Soluble
Q2.
Is salt soluble or insoluble?
Insoluble
Q3.
What is A in diagram 1?
Solution
Solvent
Q4.
What is B in diagram 1?
Solute
Solution
Q5.
What is C in diagram 1?
Solute
Solvent

## Exit quiz

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### 5 Questions

Q1.
Is sand soluble or insoluble?
Soluble
Q2.
Is salt soluble or insoluble?
Insoluble
Q3.
When should you use filtration?
to separate a soluble solid from a liquid
to separate an insoluble solid from a liquid when the solid particles are large
Correct answer: to separate an insoluble solid from a liquid when the solid particles are very small
Q4.
When should you use evaporation?
Correct answer: to separate a soluble solid from a liquid
to separate an insoluble solid from a liquid when the solid particles are large
to separate an insoluble solid from a liquid when the solid particles are very small
Q5.
When should you use sieving?
to separate a soluble solid from a liquid
Correct answer: to separate an insoluble solid from a liquid when the solid particles are large
to separate an insoluble solid from a liquid when the solid particles are very small