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Polymerisation means joining together lots of small alkene molecules
(monomers) to form very large molecules- these long-chain molecules are called

The equation is:

Pressure and Catalyst
General: Many monomers > One Polymer

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Example: n(C=C) > (CC)n
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Ethene Polyethene
(Double Bond) (many…

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Unsaturated vegetable oils can be hardened in the presence of a nickel catalyst
at about 60 degrees centigrade. This is Hydrogenation.


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