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WorksheetsAlkanes and Alkenes
Total questions: 30
Worksheet time: 26mins
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.
Name this alkane
a)
Methane
b)
Ethane
c)
Propane
d)
Butane
9.
Name this alkane
a)
Methane
b)
Ethane
c)
Propane
d)
Butane
10.
The "ane" ending in "alkane" tells someone that they are dealing with _________-bonded carbons.
a)
single
b)
double
c)
triple
d)
quadruple
11.
Which formula represents a saturated hydrocarbon?
a)
A
b)
B
c)
C
d)
D
12.
Which formula represents an unsaturated hydrocarbon?
a)
A
b)
B
c)
C
d)
D
13.
What chemical is this? (C5H10)
a)
Pentene
b)
Pentane
c)
Hexane
d)
Heptene
14.
Give the name of this compound...
C3H8
C3H8
a)
Propene
b)
Butane
c)
Butene
d)
Propane
15.
The molecular formula for Heptane is
a)
C4H10
b)
C8H18
c)
C5H12
d)
C7H16
16.
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
17.
General formula of Alkane is
a)
CnH2n+2
b)
CnH2n
c)
CnH2n+1OH
d)
CnH2n+1COOH
18.
General formula of Alkene is
a)
CnH2n+2
b)
CnH2n
c)
CnH2n+1OH
d)
CnH2n+1COOH
19.
Cracking.....
a)
Breaks larger hydrocarbons into smaller hydrocarbons
b)
Separates hydrocarbons based on their length
c)
Detects alkenes
20.
What liquid detects the presence of an alkene?
a)
Alkene water
b)
Bromine water
c)
Water
d)
Limewater
21.
Complete the equation C16H34 ---> __________ + C2H4
a)
C16H34
b)
C2H30
c)
C10H20
d)
C14H30
22.
C10H22 --> C5H12 + C3H6 + ?
a)
C2H4
b)
C3H4
c)
CO2
d)
CH4
23.
When testing for alkenes (unsaturation) bromine water turns from...
a)
orange --> blue/black
b)
colourless --> pink
c)
orange --> colourless
d)
orange --> clear
24.
Cracking large hydrocarbons releases...
a)
alkanes and alkenes
b)
alkanes only
c)
alkenes only
d)
polymers only
25.
a)
Alkane
b)
Alkene
c)
Alkyne
26.
How many carbons are in the longest chain of the following molecule:
a)
11
b)
10
c)
9
d)
8
27.
Name this molecule:
a)
trifluoro-1-methylmethane
b)
1,1,1-trifluoromethane
c)
trifluorethane
d)
1,1,1-trifluoroethane
28.
Are the compounds shown isomers
a)
Yes
b)
No
29.
Name the following molecule:
a)
3,3-dimethyl-1-butanol
b)
3,3-methyl-1-butanol
c)
2,2-dimethyl-4-butanol
d)
3,3,3-trimethyl-1-propanol
30.
Name the compound
a)
3,4-dipropylhexane
b)
3,4-diethyl-3,4-dimethylhexane
c)
Twelvane
d)
3,3,3,4,4,4-hexamethylhexane
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