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Separating mixtures

Total questions: 12

Worksheet time: 24mins

Name
Class
Date
1.
Two or more substances mingled together, but not chemically combined are known as a
a)
residue
b)
solution
c)
distillate
d)
mixture
2.

The air we breathe is a mixture of gases.

a)

True

b)

False

3.

Mrs V wants to separate the salt from the water in her glass of salt water. What separation method should she use?

a)

Magnets

b)

Evaporation

c)

Filtration

d)

Chromatography

4.

Nicole wants to dissolve a substance in water. Which substance will dissolve the easiest?

a)

Rocks

b)

sugar

c)

pepper

d)

sand

5.

To separate a mixture of soil and water what separation method would be the best to use?

a)

Filtration

b)

Distillation

c)

Chromatography

d)

Evaporation

6.
To separate a mixture of salt and water what separation method is used?
a)
Filtration
b)
Distillation
c)
Chromatography
d)
Evaporation
7.

What kind of mixture is a combination of substances that has uniform composition and appearance?

a)

colloid

b)

heteregenous

c)

homogeneous

d)

suspension

8.

This technique in this picture is based on the differences of the boiling point of the substance in the mixture. It is called

a)

decantation

b)

distillation

c)

filtration

d)

chromatography

9.
What is the process of separating at which the components move at different rates?
a)
centrifugation
b)
chromatography
c)
heating
d)
decantation
10.

Which method separates particles based on size?

a)

chromatography

b)

decantation

c)

distillation

d)

Filtration

11.

Which method separates mixtures based on boiling points.

a)

Desalination

b)

Distillation

c)

Decantation

d)

Condensation

12.
What is decantation?
a)
Distillation
b)
Desalination
c)
Separating particles by careful pouring.
d)
Measuring boiling points.