Addition polymerisation
3 marks · EasyPoly(ethene) can be made in the laboratory by addition polymerisation.
State the name of the monomer used to produce poly(ethene).
State two conditions (other than the monomer) required for the polymerisation to occur.
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(a) Ethene (or ethylene)
(b) High temperature (heat), high pressure, and an initiator (accept peroxide or named initiator). Any two correct conditions.
Show mark scheme and worked solution
Marking points
B1 (a) · 1 mark · States that the monomer is ethene.
B2 (b) · 1 mark · States a correct condition required for polymerisation (e.g. high temperature, heat, or high pressure).
B3 (b) · 1 mark · States a second correct condition required (e.g. high pressure, initiator, or another valid condition from the content).
Worked solution
a) The monomer is ethene.
b) Two conditions needed are: high temperature (heat), high pressure, and an initiator (such as a peroxide).