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Separating Mixture

Total questions: 20

Worksheet time: 20mins

Name
Class
Date
1.
Which of the following pairs of substances may best be separated through distillation
a)
 sand and soil
b)
water and soil
c)
salt and sand
d)
 water and alcohol
2.
Separating mixtures based on boiling points.
a)
Desalination
b)
Distillation
c)
Decantation
d)
Condensation
3.

Distillation uses two changes of state. What are they?

a)

Evaporation and condensation

b)

Evaporation and freezing

c)

melting and boiling

d)

sublimation and condensation

4.
Water and alcohol are easily separated by distillation because of their
a)
different densities
b)
different boiling points
c)
different colours
d)
different melting points
5.

Label part 1

a)

Thermometer

b)

Fractionating column

c)

condenser

6.

The process of changing a liquid to a gas is called

a)

evaporation

b)

filtration

c)

sieving

d)

decanting

7.
Simple distillation is best for separating a liquid from a solution. It is similar to evaporation, but the vapor is collected by condensation.
What is the difference between evaporation and distillation?
a)
the vapor is collected by freezing
b)
the vapor is collected by filtration
c)
the vapor is collected by condensation
d)
the vapor is collected by heat transfer
8.

A _________ is made up of two or more substances that are together in the same place but ARE NOT chemically combined.

a)

Pure substance

b)

Mixture

c)

Solution

d)

Suspension

9.

A solution of salt and water was put over heat. What will happen next?

a)

the salt will evaporate

b)

the salt and water evaporate

c)

the water will evaporate

d)

the water will be burnt

10.

This practice allows you to separate the tiny stones such that the rice grains would be safer to consume.

a)

using magnet

b)

handpicking

c)

filtration

d)

decantation

11.

Picking ripe fruit from the tree.

a)

using magnet

b)

handpicking

c)

sieving

d)

filtration

12.

14. In the distillation apparatus shown, what are the parts labeled as A and B?

a)

A. A - funnel and B - thermometer

b)

B. A – thermometer and B - funnel

c)

C. A – condenser and B - thermometer

d)

D. A – condenser and B - flask

13.

What happens when you boil water and ethanol?

a)

Water evaporates first

b)

Ethanol evaporates first

c)

Both evaporate at the same time

d)

Nothing happens

14.

What is the boiling point of water?

(a)  

15.

What happens if we heat the water?

a)

It becomes ice

b)

It becomes liquid

c)

It becomes vapor

16.
A liebeg condenser is used in
a)
Filtration
b)
Chromatography
c)
Evaporation
d)
Distillation
17.

How will you separate the components of mixed nuts on a plate?

a)

A. chromatography

b)

B. distillation

c)

C. handpicking

d)

D. using magnet

18.

Which of the following mixtures can be used to separate materials through the process of scooping?

a)

A. pebbles mixed with nuts

b)

B. cereals mixed with milk

c)

C. pebbles and soil

d)

D. buttons and pins

19.

Which term refers to separating mixture involves evaporation and condensation?

a)

A. chromatography

b)

B. distillation

c)

C. sieving

d)

D. using magnet

20.
Which separation technique uses the apparatus shown in the diagram?
a)
filtration 
b)
 crystallisation
c)
distillation
d)
chromatography