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Unit.1. Separating Mixtures

Total questions: 19

Worksheet time: 19mins

Name
Class
Date
1.

This technique separates liquids based differences in the boiling points.

a)

decantation

b)

distillation

c)

filtration

d)

chromatography

2.

This method is used in separating soluble solid from a liquid such as salt from water. In this technique, we don't usually try to collect the liquid; just the solid.

a)

evaporation

b)

distillation

c)

decantation

d)

filtration

3.

Name the separation technique shown in the diagram.

a)

evaporation

b)

distillation

c)

filtration

4.

Apple claims they have made a new ink that can portray more vivid colors than every before. What technique could you use to determine how many pigments the ink is made of.

a)

crystallization

b)

sublimation

c)

chromatography

d)

sedimentation

5.
Water and alcohol are easily separated by distillation because of their
a)
 different melting points
b)
different colours
c)
different densities
d)
different boiling points
6.

To separate a mixture of soil and water what separation method is used? (helpful information: soil is not soluble in water)

a)

Filtration

b)

Distillation

c)

Chromatography

d)

Evaporation

7.

What technique will allow you to obtain salt from a mixture of salt water?

a)

Filtration

b)

Distillation

c)

Chromatography

d)

Evaporation

8.
Can you separate salt from water using filtration?
a)
yes
b)
no
9.

Salt can be separated from sand by adding water to the mixture to dissolve the salt. The separation then takes place in two stages:

a)

evaporation followed by filtration

b)

distillation followed by decanting

c)

filtration followed by evaporation

d)

filtration followed by decanting

10.

In a coffee machine, the ground coffee is separated from the coffee solution by using..

a)

distillation

b)

filtration

c)

evaporation

d)

chromatography

11.
Which mixture could you separate by adding water and then pouring through a coffee filter?
a)
sand and salt, because the salt would dissolve and the sand would not
b)
baking soda and salt, because they both dissolve
c)
sugar and salt, because they both dissolve
d)
iron fillings and sand, because neither one dissolves
12.

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

13.

What type of mixture is in the container?

a)

heterogeneous

b)

homogeneous

14.

What type of mixture is coffee?

a)

heterogeneous

b)

homogeneous

15.

What technique is being carried out in the picture?

a)

crystallization

b)

sublimation

c)

chromatography

d)

sedimentation

16.

What technique will allow you to obtain BOTH pure salt and pure water from a mixture of salt water?

a)

Filtration

b)

Distillation

c)

Chromatography

d)

Evaporation

17.

This technique separates and collects liquids that have very similar boiling points.

a)

simple distillation

b)

fractional distillation

c)

evaporation

d)

chromatography

18.

A solution of sand, salt, and stearic acid are mixed with water. Only the salt dissolves. After the mixture is poured through the filter paper, where can the salt be found?

a)

A

b)

B

c)

not enough information

19.

A solution of sand, salt, and stearic acid are mixed with water. Only the salt dissolves. After the mixture is poured through the filter paper, what technique is needed to obtain the salt (the water does not need to be collected)?

a)

filtration again

b)

simple distillation

c)

chromatography

d)

evaporation