Seperation And Solubility- Separating Mixtures

Question 1

What is a mixture?

Answer 1

A mixture is when we have more than one substance in it.

Question 2

Name four ways to separate a mixture.

Answer 2

1. Sieving
2. Using a magnet
3. Filtering
4. Evaporation

Question 3

What is the purpose of a sieve?

Answer 3

To separate small solid particles from larger ones.

Question 4

What is the purpose of using a magnet in separation?

Answer 4

To separate magnetic substances from non-magnetic substances.

Question 5

What is the purpose of filtering?

Answer 5

Filtering is used to separate small solid particles from a liquid. Any liquid that has been filtered is known as a filtrate.

Question 6

What is the purpose of evaporation?

Answer 6

Evaporation is used when we want to retrieve a substance that has been dissolved.

Question 7

What is a pure substance?

Answer 7

A pure substance is when it contains only one substance (e.g. perfectly clean water)

Question 8

What is the purpose of distillation?

Answer 8

Distillation is used to separate two liquids. It is also used to separate a solvent from its solution. The outcome of this is called a distillate.