WorksheetsAlkanes Alkenes
Total questions: 25
Worksheet time: 22mins
Name
Class
Date
1.
How many carbon atoms are in methane?
a)
1
b)
2
c)
3
d)
4
2.
How many carbon atoms are in propane
a)
1
b)
2
c)
3
d)
4
3.
How many hydrogen atoms are in butane
a)
4
b)
6
c)
8
d)
10
4.
If an alkane has 20 carbon atoms, how many hydrogen atoms will it have?
a)
20
b)
22
c)
40
d)
42
5.
Alkanes are known as saturated hydrocarbons because they contain only carbon-hydrogen single bonds.
a)
True
b)
False
6.
The boiling points and viscosity of alkane molecules increase as their molecular sizes increase.
a)
True
b)
False
7.
The first member of the alkene series is methene.
a)
True
b)
False
8.
Both alkanes and alkenes react rapidly with aqueous bromine at room temperature.
a)
True
b)
False
9.
Name this alkane
a)
Methane
b)
Ethane
c)
Propane
d)
Butane
10.
Name this alkane
a)
Methane
b)
Ethane
c)
Propane
d)
Butane
11.
The "ane" ending in "alkane" tells someone that they are dealing with _________-bonded carbons.
a)
single
b)
double
c)
triple
d)
quadruple
12.
Which formula represents a saturated hydrocarbon?
a)
A
b)
B
c)
C
d)
D
13.
Which formula represents an unsaturated hydrocarbon?
a)
A
b)
B
c)
C
d)
D
14.
What chemical is this? (C5H10)
a)
Pentene
b)
Pentane
c)
Hexane
d)
Heptene
15.
Give the name of this compound...
C3H8
C3H8
a)
Propene
b)
Butane
c)
Butene
d)
Propane
16.
The molecular formula for Heptane is
a)
C4H10
b)
C8H18
c)
C5H12
d)
C7H16
17.
Hydrocarbons are compounds that contain
a)
Carbon, only
b)
Carbon and Hydrogen, only
c)
Carbon, Oxygen, and Hydrogen, only
d)
Carbon, Oxygen, Hydrogen, and Nitrogen, only
18.
General formula of Alkane is
a)
CnH2n+2
b)
CnH2n
c)
CnH2n+1OH
d)
CnH2n+1COOH
19.
General formula of Alkene is
a)
CnH2n+2
b)
CnH2n
c)
CnH2n+1OH
d)
CnH2n+1COOH
20.
Cracking.....
a)
Breaks larger hydrocarbons into smaller hydrocarbons
b)
Separates hydrocarbons based on their length
c)
Detects alkenes
21.
What liquid detects the presence of an alkene?
a)
Alkene water
b)
Bromine water
c)
Water
d)
Limewater
22.
Complete the equation C16H34 ---> __________ + C2H4
a)
C16H34
b)
C2H30
c)
C10H20
d)
C14H30
23.
C10H22 --> C5H12 + C3H6 + ?
a)
C2H4
b)
C3H4
c)
CO2
d)
CH4
24.
When testing for alkenes (unsaturation) bromine water turns from...
a)
orange --> blue/black
b)
colourless --> pink
c)
orange --> colourless
d)
orange --> clear
25.
Cracking large hydrocarbons releases...
a)
alkanes and alkenes
b)
alkanes only
c)
alkenes only
d)
polymers only
100 %
