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Source/production of Ethylene:
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Polymer: A long chained molecules made up of a linked series of repeated monomers (eg. Polyethylene)
Monomer: Simple compound that join up to form polymers. (eg. Ethylene)
Polymerisation: The process of making polymers by allowing monomers to link up
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Additional polymer:
+
Additional polymerisation: ,
%
The steps take to produce polyethylene form ethylene:
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Low Density Polyethylene (LDPE)
Properties: 0
%
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0
1
Uses: 2
%
3
High Density Polyethylene (HDPE!
Properties: 1
&
41
Uses:
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Poly Vinyl Chloride:
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5
Polystyrene:
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1
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#
5
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!
0
0
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0
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%
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Sample response: Justify the procedure you used to compare the reactivities of an alkane and its corresponding alkene. Name the
alkane, alkene and any reagents used. (4)
8
%
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%
3
.
%
%
(
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#
3
%
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%
9
Sample response: During your study of this module, you carried out an investigation to compare the reactivities of alkanes
and their corresponding alkenes in bromine water.
a. Describe the experiment you performed (2)
b. Explain the results of your investigation
(3)
c. Justify the selection of the chemical substances chosen for this investigation (2)
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Sample response: Justify the appropriateness of using sources such as computer simulations and molecular model kits to
model the polymerization process (6)
General statement:
Main Features:
3
/
3
#
%
'
Discuss the advantages of using models in chemistry. Use examples to illustrate your answer (6)...