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Unit 2 Nat 5 Chemistry

Total questions: 26

Worksheet time: 14mins

Name
Class
Date
1.
Hydrocarbons are compounds that contain
a)
  Carbon and Nitrogen
b)
Carbon and Hydrogen 
c)
  Carbon, and Oxygen
d)
Carbon, Oxygen, and  Hydrogen 
2.
Name this alkane
a)
Methane
b)
Ethane
c)
Propane
d)
Butane
3.
The following compounds have a molecular formula of
a)
CnH2n+2
b)
CH4
c)
C6H14
d)
CH3CH2CH2CH2CH2CH3
4.

What is the general formula of the alkenes?

a)

CnH2n+1

b)

CnH2n+2

c)

CnH2n

d)

CnH2n+1OH

5.
How many carbon atoms are in ethane?
a)
1
b)
2
c)
3
d)
4
6.
As the number of carbons increases in an homologous series the melting point generally...
a)

increases

b)

decreases

c)

stays the same

d)
varies
7.
Which of the following would have the highest melting point?
a)
C3H8
b)
C4H8
c)
C5H12
d)
C22H44
8.
Which of the following will react with Br2(l)
a)
hexene 
b)
cyclohexane
c)
hexane
d)
alkanes
9.
Which of the following undergoes addition reactions
a)
alkanes
b)
alkanes and alkenes
c)
alkanes and alkynes
d)
alkenes
10.
Which of the following does not contain only carbon and hydrogen
a)
alkanes 
b)
alkenes
c)

cycloalkanes

d)

alcohols

11.

What is the correct name for the following compound?

a)

3,4-dimethylheptane

b)

4-methyl-5-ethylhexane

c)

3-methyl-4-propylpentane

d)

4,5-dimethylheptane

12.

How many carbons are in the longest chain?

a)

7

b)

8

c)

9

d)

10

13.
Which formula represents an unsaturated hydrocarbon?
a)
A
b)
B
c)
C
d)
D
14.

This prefix means 7

a)

but

b)

hept

c)

hex

d)

non

15.

A family of molecules that have the same general formula and similar chemical properties are known as

a)

A homologous series

b)

Isomers

c)

Isotopes

d)

Hydrocarbons

16.

In complete combustion, the products are?

a)

Carbon monoxide and water

b)

Carbon dioxide and water

c)

Carbon dioxide and carbon

d)

Carbon and water

17.

What is the suffix for double bond hydrocarbons ?

a)

-ol

b)

-ene

c)

-ane

d)

-one

18.

State the name given to any reaction that releases heat energy:

a)

Exothermic

b)

Endothermic

19.

How many carbons does Octane contain?

a)

6

b)

7

c)

8

d)

9

20.

What homologous series de-colourises bromine water?

a)

Alkanes

b)

Alkenes

c)

Cycloalkanes

d)

Alcohols

21.

What is the functional group for the carboxylic acids?

a)

Hydroxyl (-OH)

b)

Carbonyl (-CO)

c)

Carboxyl (-COOH)

d)

(C=C)

22.

State the systematic name for this Alkene

a)

Prop-1-ene

b)

But-1-ene

c)

2-ethylbut-1-ene

d)

2-methylprop-1-ene

23.

Hydrocarbons that contain at least one double bond are known as

a)

Saturated

b)

Unsaturated

24.

What is the functional group for the alcohols?

a)

Hydroxyl (-OH)

b)

Carbonyl (-CO)

c)

Carboxyl (-COOH)

d)

(C=C)

25.

Molecules with the same molecular formula but different structural formula are known as

a)

A homologous series

b)

Isomers

c)

Isotopes

d)

Hydrocarbons

26.

What acid is vinegar made of?

a)

Hydrochloric Acid

b)

Ethanoic Acid

c)

Butanoic Acid

d)

Sulfuric Acid