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Chemistry
Topic 9
Addition polymerisation
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Cards (15)
What type of polymers are made using alkenes?
Addition polymers
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What feature characterizes alkenes?
Presence of a
carbon-carbon double bond
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Why are alkenes considered unsaturated?
They contain a
carbon-carbon double bond
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What happens to the double bond in alkenes under the right conditions?
It can break to form
new bonds
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How can the reaction of ethene molecules be represented?
By showing
monomers
on the left and
polymer
on the right
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What is a repeating unit in a polymer?
A group of
atoms
repeated throughout the polymer
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How many carbons and hydrogens are in the repeating unit of ethene?
Two
carbons and four
hydrogens
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How should the bonds of the monomer be drawn?
Facing
up
and
down
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What do the empty bonds in the repeating unit represent?
Connections to other
monomers
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What does 'n' represent in polymerization equations?
The number of
repeating units
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If n is 10, how many ethene molecules are there?
Ten
ethene
molecules
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How do you name the polymer formed from butane?
Polybutane
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What is the name of the polymer from chloroethene?
Polychloroethylene
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What conditions are required for addition polymerization reactions?
High
pressures
and a
catalyst
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What might be written on the reaction arrow for polymerization?
Pressure
and
catalyst
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