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6.15 Separating mixtures – fractional distillation

Total questions: 35

Worksheet time: 18mins

Name
Class
Date
1.

A process that separates mixtures of miscible liquids with a difference in boiling points of less than 25 ° C.

a)

Fractional distillation

b)

Simple distillation

c)

Fractional condensation

2.

............................................. is a substance that exists in a gaseous state at room temperature.

a)

Gas

b)

Vapour

3.

............................................. is a substance that is produced when a liquid or solid turn into gas due to heat (it exists in a solid or liquid state at room temperature).

a)

Gas

b)

Vapour

4.

Hydrocarbons are compounds made up of atoms of ...............................................................

a)

hydroxide and carbon only.

b)

hydrogen and carbon only.

c)

hydrogen and carbon dioxide only.

5.

A mixture of hundreds of hydrocarbons.

a)

Petrol

b)

Diesel

c)

Crude oil

6.

A mixture of hydrocarbons made up of atoms between 14 and 19 carbon atoms, used as a fuel in lorries, buses, and some cars.

a)

Petrol

b)

Diesel

c)

Crude oil

7.

A mixture of hydrocarbons made up of atoms between 5 and 10 carbon atoms, sometimes called gasoline or gas.

a)

Petrol

b)

Diesel

c)

Crude oil

8.

Crude oil is heated to more than .................., all the compounds become gases.

a)

540 ºC

b)

1450 ºC

c)

450 ºC

9.

In industrial fractionating columns, compounds that have high boiling points condense near the ...............................

a)

bottom

b)

top

10.

The compounds that make up diesel have low boiling

a)

True

b)

False

11.

Crude oil is used for............................................................................................................................................

a)

Making plastics.

b)

Making paints.

c)

Making medicines.

d)

Making toothpaste

12.

Simple distillation can be used to separate..............................

a)

different colored solids

b)

metals from non metals

c)

dissolved solids and liquid

d)

Blood cells

13.

Water and oil make a mixtures but not a solution, because they are

a)

Miscible into each other

b)

immiscible into each other

c)

Soluble into each other

d)

insoluble into each other

14.

A students sets the apparatus for fractional distillation, which part of the apparatus the particles will lose energy

a)

condenser

b)

flask

c)

fractionating column

d)

thermometer

15.

Different fractions of crude oil can be separated using fractional distillation as the liquids separate due to

a)

difference in their masses

b)

difference in their sizes

c)

the difference in their colors

d)

the difference in their boiling points

16.

Identify the method of separation shown in the picture

a)

simple distillation

b)

fractional distillation

c)

crystallization

d)

chromatography

17.

Where do short chain hydrocarbons collect?

a)

At the top

b)

In the middle

c)

At the bottom

18.

Where do long chain hydrocarbons collect?

a)

At the top

b)

In the middle

c)

At the bottom

19.

Shorter hydrocarbons have:

a)

Higher boiling points

b)

Lower boiling points

20.

Which of these substances is not a hydrocarbon?

a)

methane (CH4)

b)

ethane(C2H6)

c)

propane(C3H8)

d)

butane(C4H10)

e)

ammonia(NH3)

21.

What process happens at each level in the fractionating column?

a)

Evaporation

b)

Condensation

c)

Combustion

22.

What process happens as the crude oil enters the fractionating column?

a)

Evaporation

b)

Condensation

c)

Combustion

23.

Petrol is used for:

a)

Fuel in cars

b)

Fuel in aircraft

c)

Domestic heating and cooking

d)

Road surfacing

24.

Kerosene (paraffin) is used for:

a)

Fuel for cars

b)

Domestic heating and cooking

c)

Fuel in aircraft

d)

Fuel for large ships and in power stations

25.

Diesel oil is used for:

a)

Fuel in aircraft

b)

Road and roof surfacing

c)

Fuel in some larger vehicles

26.

Which of these numbers represent Bunsen Burner?

a)

#1

b)

#2

c)

#5

d)

#8

e)

#3

27.

Which of these numbers represent the supply of water out?

a)

#6

b)

#2

c)

#5

d)

#8

e)

#3

28.

Which of these numbers represent the supply of water in?

a)

#6

b)

#2

c)

#5

d)

#8

e)

#3

29.

Which of these numbers represent the condenser?

a)

#6

b)

#7

c)

#5

d)

#8

e)

#3

30.

Which of these numbers represent the conical flask?

a)

#2

b)

#7

c)

#5

d)

#4

e)

#9

31.

Which of these numbers represent mixture of ethanol and water?

a)

#10

b)

#2

c)

#5

d)

#8

e)

#7

32.

Which of these numbers represent round bottomed flask?

a)

#7

b)

#3

c)

#5

d)

#4

e)

#9

33.

Which of these numbers represent fractionating column?

a)

#7

b)

#3

c)

#5

d)

#4

e)

#9

34.

Which of these numbers represent thermometer?

a)

#7

b)

#3

c)

#5

d)

#4

e)

#9

35.

Which of these numbers represent the pure ethanol?

a)

#7

b)

#4

c)

#5

d)

#10

e)

#2

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