Alkanes And Alkenes Worksheet Page 2
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Distinguishing between alkanes and alkenes using chemical reactions:
Test
alkane
alkene
Combustion
Bromine water
6
Which of these tests is the better one?
Explain your answer. .......................................................................................................................
7
Complete the following true/false statements about alkenes.
a)
All alkenes are hydrocarbons.
true/false
Reason ....................................................................................................................................
.................................................................................................................................................
b)
Their general formula is C
H
.
true/false
n
2n+2
Reason ....................................................................................................................................
.................................................................................................................................................
c)
Ethene is an alkene.
true/false
Reason ....................................................................................................................................
d)
Alkenes decolourise bromine water.
true/false
Reason ....................................................................................................................................
e)
C
H
is an alkene.
true/false
4
10
Reason ....................................................................................................................................
f)
Alkenes burn with a non-smoky flame.
true/false
Reason ....................................................................................................................................
.................................................................................................................................................
g)
The formula C
H
represents an alkene.
true/false
4
8
Reason ....................................................................................................................................
.................................................................................................................................................
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