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N5 Chemistry- Hydrocarbons:Alkanes, Alkenes, Cycloalkanes

Total questions: 68

Worksheet time: 54mins

Name
Class
Date
1.

Is the name of single bonded, saturated hydrocarbons.

a)

Alkanes

b)

Alkenes

c)

Alkynes

d)

Tanins

2.

Is the name of doubled bonded, unsaturated hydrocarbons.

a)

Alkanes

b)

Alkenes

c)

Allkynes

d)

Tanins

3.

is the alkene with 3 carbons in its chain.

a)

Ethene

b)

Propene

c)

Methene

d)

Decene

4.

Is the simplest alkane

a)

Ethane

b)

Methane

c)

Propane

d)

Decane

5.
How many carbon atoms are in ethane?
a)
1
b)
2
c)
3
d)
4
6.
How many carbon atoms are in methane?
a)
1
b)
2
c)
3
d)
4
7.
How many carbon atoms are in methane?
a)
1
b)
2
c)
3
d)
4
8.
Hydrocarbons are compounds that contain
a)
  Carbon and Nitrogen
b)
Carbon and Hydrogen 
c)
  Carbon, and Oxygen
d)
Carbon, Oxygen, and  Hydrogen 
9.
Which of the following elements must be present in any organic compound?
a)
Carbon
b)
Oxygen
c)
Potassium
d)
Hydrogen
10.
Which of the following compounds is an example of hydrocarbon?
a)
CO2
b)
C2H6
c)
C2H5OH
d)
CH3COOH
11.
Name this alkane
a)
Methane
b)
Ethane
c)
Propane
d)
Butane
12.
Name this alkane
a)
Methane
b)
Ethane
c)
Propane
d)
Butane
13.
Name this alkane
a)
Methane
b)
Ethane
c)
Propane
d)
Butane
14.
Name this alkane
a)
Methane
b)
Ethane
c)
Propane
d)
Butane
15.
Name the organic family for this structure:
a)
alkanes
b)
alkenes
c)
alkynes
d)
aromatics
16.
What is the suffix for single bonded hydrocarbons?
a)
-yne
b)
-ene
c)
-ane
d)
-one
17.

How many chemical bonds can each carbon atom form?

a)

one

b)

two

c)

three

d)

four

18.

Name this compound

a)

hexane

b)

hexene

c)

heptane

d)

pentane

e)

methylbutane

19.

What chemical is this? (C5H10)

a)

Pentene

b)

Pentane

c)

Hexane

d)

Heptene

20.

C4H10 is an example of a _________________.

a)

molecular formula

b)

full structural formula

c)

shortened structural formula

d)

ball-and-stick model

21.
What kind of hydrocarbon is this?
a)
alkene
b)
alkane
c)
alkyne
d)
benzene
22.

Name the following hydrocarbon

a)

butane

b)

hexane

c)

heptane

d)

hexene

23.
a)

propane

b)

butane

c)

pentane

24.
How many hydrogen atoms are in butane
a)
4
b)
6
c)
8
d)
10
25.
If an alkane has 20 carbon atoms, how many hydrogen atoms will it have?
a)
20
b)
22
c)
40
d)
42
26.

is the alkene with 3 carbons in its chain.

a)

Ethene

b)

Propene

c)

Methene

d)

Decene

27.

CH3CH3 is an example of a _______________ formula.

a)

molecular

b)

empirical

c)

structural

d)

displayed

28.
what kind of molecule is this?
a)
alkane
b)
alkene
c)
alkyne
d)
cycloalkane
29.
If an alkane has 32 hydrogen atoms, how many carbon atoms does it have?
a)
64
b)
66
c)
15
d)
16
30.

What is the general formula of the alkenes?

a)

CnH2n+1

b)

CnH2n+2

c)

CnH2n

d)

CnH2n+1OH

31.

What prefix do we use for alkanes that are arranged in a loop?

a)

ring-

b)

cyclic-

c)

cyclo-

32.

What is the molecular formula for cyclopropane?

a)
b)
c)
d)
33.

What is the molecular formula of cyclopentane?

a)
b)
c)
d)
34.

What is the molecular formula of cyclobutane?

a)
b)
c)
d)
35.

Name this molecule

a)

butane

b)

propane

c)

cyclobutane

d)

cyclopentane

36.

Name this molecule

a)

hexane

b)

heptane

c)

cycloheptane

d)

cyclohexane

37.

The molecules are most accurately...

a)

Alkanes

b)

Cycloalkanes

38.

Octane...

a)

Is an 8 carbon alkane

b)

Is a six carbon alkane

c)

Is an 8 carbon cycloalkane

d)

Is a 6 carbon cycloalkane

39.

Which of the following shows the structure of propene?

a)
b)
c)
d)
40.

Which of the following shows the structure of ethene?

a)
b)
c)
d)
41.

Which of the following would be named cyclobutane?

a)
b)
c)
d)
42.

Which of the following is a type of combustion that occurs when there is plenty of oxygen; it produces carbon dioxide and water vapour only?

a)

incomplete combustion

b)

complete combustion

c)

burning

d)

oxidation

43.

Which of the following is a type of combustion that occurs when there is insufficient oxygen; it produces water vapour and carbon monoxide and/or carbon particulates?

a)

incomplete combustion

b)

complete combustion

c)

burning

d)

oxidation

44.

Which of the following is a toxic gas produced during incomplete combustion that reduces the oxygen-carrying capacity of the blood?

a)

carbon dioxide

b)

oxides of nitrogen

c)

sulfur dioxide

d)

carbon monoxide

45.

What are the products of the complete combustion of hydrocarbons? Tick all that apply.

a)

carbon particulates

b)

carbon dioxide

c)

carbon monoxide

d)

water

46.

What are the products of the incomplete combustion of hydrocarbons? Tick all that apply.

a)

carbon particulates

b)

carbon dioxide

c)

carbon monoxide

d)

water

47.

Which of the following is a greenhouse gas produced during complete combustion?

a)

carbon dioxide

b)

oxides of nitrogen

c)

sulfur dioxide

d)

carbon monoxide

48.

Complete the sentence: A (a)   is a substance that, when burned, releases heat energy.

49.

What is the general formula of the alkenes?

a)

CnH2n+1

b)

CnH2n+2

c)

CnH2n

d)

CnH2n+1OH

50.

What term describes alkene molecules that contain a C=C double bond?

a)

saturated

b)

unsaturated

51.

What process is used to separate crude oil in hydrocarbons with different chain lengths?

a)

distillation

b)

fractional distillation

c)

cracking

d)

polymerisation

52.

Where in the fractionating column are shorter chain hydrocarbon molecules obtained?

a)

At the top

b)

At the bottom

53.

Fractional distillation separates crude oil based on the different __________ of the molecules in the mixture

a)

melting point

b)

boiling point

c)

freezing point

d)

chemical reactivity

54.

Molecules collected at the bottom of the fractionating column tend to be...

a)

more viscous, less flammable and less volatile

b)

less viscous, more flammable and more volatile

c)

more viscous, more flammable and less volatile

d)

less viscous, less flammable and more volatile

55.

Molecules collected at the top of the fractionating column tend to be...

a)

more viscous, less flammable and less volatile

b)

less viscous, more flammable and more volatile

c)

more viscous, more flammable and less volatile

d)

less viscous, less flammable and more volatile

56.

What are the 2 products of complete combustion?

a)

carbon dioxide + hydrogen

b)

carbon dioxide + water

c)

carbon monoxide + water

d)

carbon monoxide + hydrogen

57.

What are the products of incomplete combustion?

a)

carbon monoxide

b)

water

c)

carbon

d)

hydrogen

58.

What does a fuel react with when it burns?

a)

oxygen

b)

water

c)

carbon dioxide

d)

methane

59.

What is the term given to the process by which longer chain hydrocarbons are broken down into shorter length alkanes and alkenes?

a)

fractional distillation

b)

evaporation

c)

cracking

d)

polymerisation

60.

Name the following hydrocarbon

a)

butane

b)

hexane

c)

heptane

d)

hexene

61.

C10H22 --> C5H12 + C3H6 + ?

a)

C2H4

b)

C3H4

c)

CO2

d)

CH4

62.

When testing for alkenes (unsaturation) bromine water turns from...

a)

orange --> blue/black

b)

colourless --> pink

c)

orange --> colourless

d)

orange --> clear

63.

Limewater turning cloudy is the test for...

a)

carbon dioxide

b)

water

c)

hydrogen

d)

oxygen

64.

Why do we use cracking to get petrol?

a)

The supply of petrol from cracking is larger than the demand

b)

The supply of petrol from fractional distillation is larger than the demand

c)

The supply of petrol from fractional distillation is smaller than the demand

d)

The supply of petrol from cracking is smaller than the demand

65.

What is cracking?

a)

A process that turns long chain hydrocarbons into short chain hydrocarbons

b)

A process that turns short chain hydrocarbons into long chain hydrocarbons

66.

What is always produce during cracking?

a)

Alkane + alkane

b)

Alkane + alkene

c)

Alkene + alkene

67.

Decane (10 carbons) is cracked into hexane (6 carbons) and an alkene. What is the name of this alkene?

a)

Ethene

b)

Propene

c)

Butene

d)

Pentene

68.

What is the test for alkenes?

a)

Adding bromine water, if alkene is present it will turn orange

b)

Adding bromine water, if alkene is present it will turn colourless

c)

Adding bromine water, if alkane is present it will turn orange

d)

Adding bromine water, if alkane is present it will turn colourless

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