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Matter and Separation Techniques

Total questions: 44

Worksheet time: 30mins

Name
Class
Date
1.

What is the name of this separation technique?

a)

Simple distillation

b)

Fractional filtering

c)

Boiling

d)

Evaporation

2.

What is the name of this separation technique?

a)

distillation

b)

filtration

c)

evaporation

d)

chromatography

3.

Which separation technique is used to obtain salt from seawater?

a)

fractional distillation

b)

Filtration

c)

Chromatography

d)

Evaporation

4.

Referring to the chromatogram, black ink contains

a)

Blue, red and yellow ink only

b)

Blue, red, yellow and green ink

c)

Blue and yellow ink

d)

Black ink only

5.

What method would you use to separate a mixture of salt and water so that you can get keep the salt AND the water?

a)

sorting by hand

b)

distillation

c)

chromatography

6.

Dyes in a felt-tip pen may be separated by....

a)

Distillation

b)

Decanting

c)

Chromatography

d)

Centrifuge

7.
Which one of the following is the name for separation technique in the picture below
a)
distillation
b)
dissolving
c)
evaporation
d)
decanting
8.
Which one of the following is a disadvantage of evaporation?
a)
It always requires heat
b)
It cannot be used for insoluble solids
c)
All of the solute is recovered
d)
The solvent (liquid part) is not recovered
9.

No matter what you do, sand will not dissolve in water, because sand is _________.

a)

dissolved

b)

soluble

c)

insoluble

d)

aqueous

10.

Filtration can be used to separate...

a)

an insoluble solid from a solution

b)

a soluble solid from a solution

c)

a dissolved solid from a solution

11.

Combination of multiple substances is a...

a)

pure substance

b)

mixture

c)

colloid

d)

suspension

12.

A mixture of an insoluble substance dispersed in a liquid or gas

a)

sediment

b)

suspension

c)

dilution

d)

colloid

13.

What separation technique did you use to separate the iron filings?

a)

Sieving

b)

Filtration

c)

Magnetic separation

14.

What is the physical property on which distillation depends?

a)

different boiling points

b)

different melting points

c)

different solubilities

d)

different densities

15.

Which separation technique is shown below

a)

filtration

b)

crystallization

c)

sublimation

d)

evaporation

16.

Which of the following techniques can we use to separate homogeneous mixtures?

a)

Crystallisation

b)

Distillation

c)

Evaporation

d)

All of the above

17.

Name the separation technique

a)

Centrifuge

b)

Crystallisation

c)

Distillation

d)

Evaporation

18.

One practical application of distillation is the distillation of:

a)

crude oil

b)

Crystallisation

c)

crude gasoline

d)

crude salt

19.

Name the separation technique

a)

Filtration

b)

Evaporation

c)

Distillation

d)

Separation

20.

True or false: Magnets can be used to separate iron filings from sand

a)

True

b)

False

21.

In a salt water solution ...

a)

Salt is the solute and water is the solvent

b)

Salt is the solvent and water is the solute

22.

What is the basis for separating the components of a mixture through distillation?

a)

freezing point of the substances

b)

room temperature

c)

decaying period

d)

boiling point of the substances

23.

The image shows a mixture of concrete nails and saw dusts. What technique is best to use to separate the nails from the saw dusts?

a)

sieving

b)

chromatography

c)

decantation

d)

magnetic separation

24.

Water is the univeral ____.

a)

solute

b)

solvent

c)

solution

25.

solute + solvent =

a)

solution

b)

equation

26.
What is a solute?
a)
The substance that does the dissolving in a solution.
b)
The substance that is dissolved into the solution.
c)
The mixing of different substances.
d)
The process in which neutral molecules lose or gain electrons
27.

Mixture of sugar and hot water.

a)

Homogeneous

b)

Heterogeneous

28.
a)

Homogeneous

b)

Heterogeneous

29.

What is a solvent?

a)
The substance that does the dissolving in a solution.
b)
The substance that is dissolved into the solution.
c)
The mixing of different substances.
d)
The process in which neutral molecules lose or gain electrons
30.
a)

Homogeneous

b)

Heterogeneous

31.

Unit 2: Matter & Energy

A compound is...

a)

A physical combination of two or more substances with uniform distribution

b)

a chemical combination of two or more elements in a fixed ratio

c)

composed of only one type of atom

32.

Which separation technique is shown?

a)

Filtration

b)

Evaporation

c)

Chromatography

d)

Distillation

33.
What is the density of water?
a)
1 mL
b)
1 gram
c)
1 g/cm3
d)

None of the above

34.

Boba tea is what kind of mixture?

a)

Homogeneous

b)

Heterogeneous

35.

Pure water is an example of what?

a)

Element

b)

Solution

c)

Compound

d)

Mixture

36.

A _________ is made of two or more substances that are together in the same place but their atoms are NOT chemically bonded.

a)

compound

b)

mixture

c)

substance

d)

filtration

37.

Heterogeneous and Homogeneous are two types of what?

a)

compounds

b)

elements

c)

mixtures

d)

atoms

38.

What has the lightest density?

a)

lamp oil

b)

honey

c)

bolt

d)

ping pong ball

39.

Which item has a density less than 1 g/ml?

a)

cherry tomato

b)

milk

c)

ping pong ball

d)

bolt

40.

What has the heaviest density?

a)

ping pong ball

b)

corn syrup

c)

bolt

d)

honey

41.

Which of the following would NOT increase the rate at which a sugar cube dissolves?

a)

Reducing the amount of solvent

b)

Crushing the sugar cube

c)

Stirring the solution

d)

Heating the solvent

42.

You can make a solute dissolve more quickly in a solvent by

a)

adding more solute.

b)

adding ice.

c)

heating the solvent.

d)

removing some solvent.

43.

Stirring the solution...

a)

decrease the rate of solubility

b)

Doesn't change the rate of solubility

c)

increase the rate of solubility

d)

None of the above

44.

Molecules that are water loving are called?

a)

hydrophilic

b)

hydrophobic

c)

aquaphobic

d)

?

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