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Worksheets

Slutions, mixtures, and separation techniques

Total questions: 161

Worksheet time: 2hrs 30mins

Name
Class
Date
1.

What is the basis of separation for chromatography?

a)

Boiling point

b)

Speed

c)

Speed and particle size

d)

Density

2.

What is the basis of separation for distillation?

a)

Boiling point

b)

Speed

c)

Particle size

d)

Density

3.

What is the basis of separation for evaporation and crystallisation?

a)

Boiling point

b)

Speed

c)

Particle size

d)

Density

4.

What is the basis of separation for sedimentation and decantation?

a)

Boiling point

b)

Speed

c)

Particle size

d)

Density

5.

This method is used in separating soluble solid from a liquid such as salt from water.

a)

evaporation

b)

distillation

c)

decantation

d)

filtration

6.

This method is useful in a pharmaceutical industry in determining the amount of each chemical in each product.

a)

distillation

b)

chromatography

c)

sieving

d)

decantation

7.

This method is used to separate metals from non metals.

a)

use of magnet

b)

physical manipulation

c)

sieving

d)

chromatography

8.

This involves using a strainer or a big screen to separate the components of solid mixtures.

a)

chromatography

b)

distillation

c)

sieving

d)

physical manipulation

9.

This technique is based on the differences of the boiling point of the substance in the mixture.

a)

decantation

b)

distillation

c)

filtration

d)

chromatography

10.

Decantation is used to separate...

a)

a heavy insoluble solid from a liquid.

b)

a light insoluble solid from a suspension.

c)

a soluble solid from a solution

d)

puppies from kittens

11.

If a solid doesn't dissolve in a liquid we say that it is

a)

Soluble

b)

A solvent

c)

Insoluble

d)

Undissolveable

12.

A solution is a mixture that is made up of

a)

2 solids mixed together

b)

A solid mixed with a gas

c)

A solid dissolved in a liquid

d)

None of the above

13.

In a solution the liquid that dissolves a solvent is called the

a)

Solvent

b)

Solute

c)

Dissolver

d)

Water

14.

Mixtures can be separated .......................

a)

Physically

b)

Chemically

15.

Which of the following is a correct statement about distillation

a)

The components of the mixture have different densities

b)

The components of the mixture have different melting points

c)

The components of the mixture have different boiling points

d)

The components of the mixture form a heterogeneous mixture

16.

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

17.

This type of paper allows liquid to pass through it. What tool is it?

a)

sieve

b)

filter

18.

Dry ice is solid. When it is left under room temperature it gives off gas. What process is this?

a)

evaporation

b)

distillation

c)

decantation

d)

sublimation

19.

How are you going to separate the iron filings from sulfur powder?

a)

by sieving

b)

by using magnet

c)

by decantation process

d)

by dissolving sulfur to water

20.

Which solution is the most concentrated?

a)

200 mL water

1 scoop sugar

b)

100 mL water

2 scoops sugar

c)

200 mL water

2 scoops sugar

d)

100 mL water

1 scoop sugar

21.

The word QUANTITY means HOW MUCH of something.

Which solution contains the greatest QUANTITY of solvent?

a)

100 mL water

20 g sugar

b)

200 mL water

30 g sugar

c)

300 mL water

10 g sugar

d)

150 mL water

25 g sugar

22.

The word QUANTITY means HOW MUCH of something.

Which solution contains the greatest QUANTITY of solute?

a)

100 mL water

20 g sugar

b)

200 mL water

30 g sugar

c)

300 mL water

10 g sugar

d)

150 mL water

25 g sugar

23.

Which bowl can be separated by using filtration?

a)

Bowl 1

b)

Bowl 2

c)

Bowl 3

d)

Bowl 4

24.

Sugar and sand were added to water, then stirred. The mixture was then poured through the filter paper. Which statement correctly tells what happened?

a)

the sugar and the sand both stayed on the filter paper and the water went through the filter into the beaker

b)

the sand stayed on the filter paper and the sugar and water went through the filter into the beaker

c)

the water, sand, and sugar all went through the filter paper and into the beaker

d)

the water, sand, and sugar all stayed on the filter paper, and nothing went into the beaker

25.

Which bowl can be separated by using magnetism?

a)

Bowl 1

b)

none of them

c)

Bowls 2 and 3

d)

Bowl 4

26.

The beaker contains water and salt Which method can be used to separate the mixture?

a)

evaporation

b)

filtration

c)

floatation

d)

sifting

27.

The beaker contains sugar and pebbles. Which method can be used to separate the mixture?

a)

magnetism

b)

filtration

c)

floatation

d)

sifting

28.

The beaker contains water and rubber pellets. Which method can be used to separate the mixture?

a)

magnetism

b)

filtration

c)

floatation

29.

This method is used in separating soluble solid from a liquid such as salt from water.

a)

evaporation

b)

distillation

c)

decantation

d)

filtration

30.

This method is used to separate metals from non metals.

a)

use of magnet

b)

physical manipulation

c)

sieving

d)

chromatography

31.

This involves using a strainer or a big screen to separate the components of solid mixtures.

a)

chromatography

b)

distillation

c)

sieving

d)

physical manipulation

32.

Decantation is used to separate...

a)

a heavy insoluble solid from a liquid.

b)

a light insoluble solid from a suspension.

c)

a soluble solid from a solution

d)

puppies from kittens

33.

If a solid doesn't dissolve in a liquid we say that it is

a)

Soluble

b)

A solvent

c)

Insoluble

d)

Undissolveable

34.

A solution is a mixture that is made up of

a)

2 solids mixed together

b)

A solid mixed with a gas

c)

A solid dissolved in a liquid

d)

None of the above

35.

In a solution the liquid that dissolves a solvent is called the

a)

Solvent

b)

Solute

c)

Dissolver

d)

Water

36.

Mixtures can be separated .......................

a)

Physically

b)

Chemically

37.

Which of the following is a correct statement about distillation

a)

The components of the mixture have different densities

b)

The components of the mixture have different melting points

c)

The components of the mixture have different boiling points

d)

The components of the mixture form a heterogeneous mixture

38.

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

39.

This type of paper allows liquid to pass through it. What tool is it?

a)

sieve

b)

filter

40.

Which ink is most soluble?

a)

Blue

b)

Red

c)

Yellow

d)

Green

41.

What is the name of this separation technique?

a)

distillation

b)

filtration

c)

evaporation

d)

chromatography

42.

What is the name of this separation technique?

a)

Simple distillation

b)

Fractional distillation

c)

Boiling

d)

Evaporation

43.

Bonus:

What are the components of a cup of bubble milk tea?

(Select all that apply)

a)

Tapioca pearls

b)

Milk

c)

Water

d)

Tea

44.

Which one of the following is a disadvantage of evaporation to dryness?

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

45.

What method is used to obtain copper(II) sulfate crystals from its solution?

a)

Crystallisation

b)

Evaporation to dryness

c)

Paper chromatography

d)

Fractional distillation

46.

During filtration, the liquid that has passed through the filter paper is called the (a)  

47.

During filtration, the solid that is retained by the filter paper is called the (a)  

48.

For paper chromatography to work,

a)

the dyes must have different boiling points.

b)

the dyes must have different solubilities in the solvent.

c)

the starting line on the chromatogram must be drawn using pen.

d)

the starting line must be below the level of the solvent.

49.

What is the physical property that fractional distillation depends on?

a)

different boiling points

b)

different melting points

c)

different solubilities

d)

different densities

50.

Which separation technique is used to obtain pure water from seawater?

a)

Simple distillation

b)

Filtration

c)

Chromatography

d)

Evaporation

51.

Select all the examples of mixtures.

a)

Air

b)

Salt water

c)

Pure honey

d)

Calcium carbonate

52.

Which of the following statements tells us that a sample of liquid is pure water?

a)

It is colourless.

b)

It leaves no residue when filtered.

c)

It boils at 100oC.

d)

It is odourless.

53.

True or False: Separation by crystallisation yields a purer product than heating to dryness

a)

True

b)

False

54.

True or False: Filtration can be used to separate solutions

a)

True

b)

False

55.

True or False: If a mixture contains 2 substances, I need only one separating technique to separate the substances into their components.

a)

True

b)

False

56.

What is the purpose of Filtration?

a)

Separating and insoluble solid from a liquid

b)

Separation of a mixture of 2 solids

c)

Separates heavier substances from a suspension

57.

Are all magnet attracted Substances Recyclable

a)

Yes

b)

No

58.

What is an example of gravity separation?

a)

Gold panning

b)

A pool filter

c)

Vaccum cleaners

d)

Seperating iron chips from sand

59.

magnetic separation allows the separation of a mixture of how many solids

a)

11

b)

3

c)

5

d)

2

60.

Which separation technique is used to separate solids?

a)

Gravity seperation

b)

Magnetic seperation

c)

Filteration

d)

All of the above

61.

In the process of gravity separation what do the heavier particles do?

a)

Sink to the bottom

b)

Rise to the top

c)

Float around the container

62.

Using a filter to separate substances is called

a)

filtered

b)

Filitration

c)

filtration

63.

What is the definition an insoluble substance?

a)

a substance that cannot dissolve

b)

a substance that can dissolve

64.

What is the most used way to separate Recycling?

a)

Filtration

b)

Distillation

c)

Magnetic Separation

d)

Evaporation

65.

What method of separation would you use to separate salt and water

a)

Magnetic Separation

b)

Evaporation

c)

Gravity Separation

d)

Filtration

66.

which one of these is usually used in household products?

a)

decanting

b)

magnetic separation

c)

filtration

d)

distillation

67.

Which insoluble separation techniques involve gravity as a major tool?

a)

magnetic separation

b)

filtration

c)

decanting

d)

evaporation

68.

Which are the three ways to separate insoluble substances?

a)

magnetic separation, filtration and evaporation

b)

filtration, decanting and pouring

c)

decanting, filtration and magnetic separation

d)

magnetic separation, filtration and distillation

69.

What is a sediment?

a)

a type of wood

b)

a type of rock

c)

a bone

70.

Which drink doesn't use the separation technique Filtration?

a)

Coffee

b)

Tea

c)

Instant coffee

71.

Which of these metals can't be separated by the separation technique Magnetic separation?

a)

Copper

b)

Cobalt

c)

Nickel

72.

is nickel magnetic?

a)

yes

b)

no

73.

What is an example of filtration:

a)

Vacuum Cleaner

b)

Panning for gold

c)

Recycling

74.

Synonym for gravity separation is:

a)

Distillation

b)

Decanting

c)

Filtration

75.
If you shake up the sand and water, the sand spreads through the water forming a cloudy ______.
a)
substance
b)
suspension
c)
sediment
d)
solution
76.
Which technique is shown the diagram below
a)
seiving
b)
filtration
c)
decanting
d)
crystallization
77.

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

a)

dissolved

b)

soluble

c)

insoluble

d)

aqueous

78.
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
79.
Which one of the following is the name for separation technique in the picture below
a)
distillation
b)
dissolving
c)
evaporation
d)
decanting
80.

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

a)

Distillation

b)

Decanting

c)

Chromatography

d)

Centrifuge

81.

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

82.

During filtration, the solid that is trapped in the filter paper is called ..A.. and the liquid that has passed through the filter paper is called ..B..

a)

A: residue B: filtrate

b)

A: residue B: filterate

c)

A: filtrate B: residue

d)

A: filterate B: residue

83.

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

84.

Which ink is a mixture?

a)

Blue

b)

Red

c)

Yellow

d)

Black

85.

Which separation technique is used to obtain salt from seawater?

a)

Simple distillation

b)

Filtration

c)

Chromatography

d)

Evaporation

86.

How to separate iron filings from flour?

a)

Distillation

b)

Evaporation

c)

Filtration

d)

Magnetic Attraction

87.

How to separate coffee beans and coffee liquid?

a)

Distillation

b)

Filtration

c)

Evaporation

d)

Sieving

88.

How to separate tea leaves and tea liquid?

a)

Decantation

b)

Evaporation

c)

Sieving

d)

Magnetic Attraction

89.

How to separate sugar and water?

a)

Decantation

b)

Distillation

c)

Filtration

d)

Evaporation

90.

How to separate needles and toothpicks?

a)

Decantation

b)

Distillation

c)

Magnetic Attraction

d)

Sieving

91.

How to separate cooked noodles and water?

a)

Decantation

b)

Filtration

c)

Evaporation

d)

Sieving

92.

How to separate salt and water?

a)

Decantation

b)

Filtration

c)

Evaporation

d)

Sieving

93.

How to separate pebbles and water?

a)

Decantation

b)

Filtration

c)

Evaporation

d)

Sieving

94.
Separating mixtures based on boiling points.
a)
Desalination
b)
Distillation
c)
Decantation
d)
Condensation
95.
Which one of the following would you use to separate sand from iron filings?
a)
a bar magnet
b)
filter paper
c)
chromatography paper
d)
alum
96.

How are suspensions and colloids different?

a)

Suspensions settle out and colloids do not settle.

b)

Colloids settle out and suspensions do not settle.

c)

Suspensions dissolve and colloids do not.

d)

Colloids dissolve and suspensions do not.

97.

Which statement below does NOT describe a colloid?

a)

A colloid is a type of heterogeneous mixture

b)

A colloid is a type of solution.

c)

The particles in a colloid do not settle like they do in a suspension.

d)

The particles in a colloid do not dissolve – they are just too small to be seen.

98.
A ________ is something that dissolves in a liquid (solvent)
a)
solute
b)
salt
c)
sugar
d)
solution
99.
Sand floating in water, but most of the sand is settled at the bottom this an example of which type of mixture?
a)
A solution
b)
A colloid
c)
A suspension
d)
A compound
100.

In a solution, it is the dissolving substance.

a)

solvent

b)

suspension

c)

colloid

d)

solution

101.

In a solution, it is the substance that is being dissolved.

a)

Solute

b)

Suspension

c)

Colloid

d)

Solvent

102.

What is a mixture?

a)

elements chemically combined

b)

a combination of different substances

c)

composed of one atom only

d)

it is made of chemical

103.
Something made up of two or more substances is called a 
a)
mixture
b)
element
c)
compound
d)
natural
104.
Which one of the following techniques would best be used to separate soil and water?
a)
Decanting
b)
distillation
c)
Filtration
d)
Chromatography
105.
Sand and gravel may be separated from each other through using..
a)
a filter funnel
b)
a sieve
c)
an evaporating basin
d)
a distillation
106.
Name the separation method that causes wet clothes on a clothes line to dry
a)
Chromatography
b)
Filtration
c)
Distillation
d)
Evaporation
107.

The separation technique being used is

a)

Decanting

b)

Filtering

c)

Evaporation

d)

Distillation

108.

Which tool could you use to separate large and small particles?

a)

A sieve

b)

A distillation flask

c)

Chromatography

d)

Evaporating basin

109.

Which is not a separation technique?

a)

Filtrating

b)

Distillating

c)

Evaporating

d)

Dissolving

110.

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

111.

True or false: Decanting is a technique that can be used to separate a salt water solution

a)

True

b)

False

112.

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

a)

True

b)

False

113.

Name the separation technique

a)

Filtration

b)

Evaporation

c)

Distillation

d)

Separation

114.

Name the separation technique

a)

Distillation

b)

Crystallisation

c)

Evaporation

d)

Condensation

115.

Name the separation technique

a)

Centrifuge

b)

Crystallisation

c)

Distillation

d)

Evaporation

116.
Which technique is shown the diagram below
a)
seiving
b)
filtration
c)
decanting
d)
crystallization
117.

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

a)

dissolved

b)

soluble

c)

insoluble

d)

aqueous

118.
Which one of the following is the name for separation technique in the picture below
a)
distillation
b)
dissolving
c)
evaporation
d)
decanting
119.

Which separation technique is used to obtain salt from seawater?

a)

Simple distillation

b)

Filtration

c)

Chromatography

d)

Evaporation

120.

What is the name of this separation technique?

a)

distillation

b)

filtration

c)

evaporation

d)

chromatography

121.

What is the name of this separation technique?

a)

Simple distillation

b)

Fractional distillation

c)

Boiling

d)

Evaporation

122.

A mixture is a combination of two or more substances that cannot be physically separated.

a)

True

b)

False

123.

Colloids are the same as suspensions in that particles of one component are suspended in the other component, but in colloids the particles stay suspended.

a)

True

b)

False

c)

Neither

124.

Which two features identify suspensions?

a)

The components separate out if left to stand

b)

The components do not separate out if left to stand

c)

They are transparent

d)

Particles of one component are suspended in the other component

125.

Which of the following ingredients are soluble in water?

a)

Cork

b)

Glass

c)

Sugar

d)

Oil

126.

A particular soil is a mixture of sand, dead plant matter, water and air. The states of matter in this mixture are:

a)

Solid only

b)

Solid and liquid only

c)

Liquid and gas only

d)

Solid , liquid and gas

127.

The best method of separating a solution from a suspension is

a)

Filtration

b)

Settling

c)

Decanting

d)

Sieving

128.

Which of the following is not an example of a mixture?

a)

Lemonade

b)

Sodium chloride

c)

Fruit salad

d)

Food colouring and water

129.

Which statement about mixtures is FALSE?

a)

A mixture contains more than one ingredient.

b)

A mixture can be separated.

c)

The ingredients of a mixture keep their physical properties.

d)

All mixtures are food or drink.

130.

Which part of the following mixture (sugar, sand and water) would pass through filter paper?

a)

Sugar and water

b)

Sand

c)

Water

d)

Sugar

131.

What is the correct order for obtaining salt from a mixture of sand and salt?

a)

Dissolving in water - filtration - evaporation

b)

Evaporation - filtration - dissolving in water

c)

Filtration - dissolving in water - evaporation

d)

Dissolving in water-sieving- decanting

132.

Which is the best separation technique to get salt from salty water?

a)

Evaporation

b)

Filtration

c)

Distillation

d)

Sieving

133.

A soluble substance will

a)

Form small particles to form a clear suspension

b)

Dissolve to form a cloudy solution

c)

Dissolve to form a clear solution

d)

Form small particles to form a cloudy suspension

134.

Pure substances contain: 

a)

Only one type of substance

b)

Substances that cannot be chemically separated

c)

A solvent and a solute

d)

All of the above

135.

A suspension contains:

a)

A bridge hanging over a valley

b)

A solvent and a solute

c)

A solvent and suspended particles

d)

A solution and a solvent

136.

In chemistry, a solution contains

a)

An answer to a problem

b)

A solvent and a solute

c)

A solvent and suspended particles.

d)

A solution and a solvent

137.

HARD: In what week will your investigation take place?

a)

Week 6

b)

Week 7

c)

Week 8

d)

Week 9

138.

HARD: Which of the following is NOT a Solute that is added to soft drink

a)

Carbon dioxide Gas

b)

Food colouring

c)

Flavouring

d)

Water

139.

HARD: What is the gas that is added to soft drink to give it the FIZZ

a)

Carbon dioxide

b)

Oxygen

c)

Nitrogen

d)

Argon

140.

HARD: We looked at dry ice in a previous lesson, Which state of matter does dry ice not exist in

a)

Solid

b)

Liquid

c)

Gas

141.

HARD: In the air we breathe, which gas is in the largest quantity?

a)

Nitrogen

b)

Oxygen

c)

carbon dioxide

d)

argon

142.

When foods are dissolved in our stomach through acids. Are the stomach acids the solvent or solute?

a)

Solvent

b)

Solute

143.

Which two state of matter fill the shape of a container?

a)

Solid and liquid

b)

Solid and gas

c)

Liquid and gas

d)

none of the above

144.

two pure substances are added together this is known as a (a)   .

145.

This diagram represents the particles of which state of matter

a)

Solid

b)

Liquid

c)

Gas

146.

How could you seperate salt that has dissolved in water?

a)

FIltration

b)

Evaporation

c)

Sieving

d)

Magnetic separation

147.

Which of the following properties do all the states of matter share?

a)

Incompressible

b)

usually invisible

c)

fills the shape of a container

d)

Expands when heated

148.

Which of the following is not a property of a gas

a)

Usually invisible

b)

fills a container

c)

Incompressible

d)

Expands when heated

149.

What separation technique is shown here?

a)

Sieving

b)

Magnetic separation

c)

Filtration

d)

Evaopration

150.

Which separation technique is used for trash recycling?

a)

Filtration

b)

Sieving

c)

Magnetic separation

d)

Evaporation

151.

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

152.

Which of the following substances are Insoluble?

a)

Salt

b)

Sugar

c)

Sand

d)

Coffee

153.

When a Gas goes to a liquid this is known as ___________

a)

Evaporation

b)

Condensation

c)

Freezing

d)

Melting

154.

What will a liquid change states to if you take away heat?

a)

Gas

b)

Stay a liquid

c)

solid

d)

solution

155.

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

a)

Sieving

b)

Filtration

c)

Magnetic separation

156.

When sugar dissolves in a glass of warm water, the sugar is the_________

a)

Solute

b)

Solvent

157.

The air around us is an example of a mixture

a)

True

b)

False

158.

True or false: Sieving can be used to separate a mixture with two solid components of different sizes

a)

True

b)

False

159.

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

a)

True

b)

False

160.

This process allows the fine flour particles to pass through the holes of the strainer while the bigger impurities remain on the strainer. What is this process called?

(a)  

161.

Which one of these are solvents?

a)

Salt

b)

Water

c)

Sugar

d)

Grass

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