This question is about ethene, the structure of which is shown in Figure 1.Â
Why is this molecule described as unsaturated?Â
Ethene can undergo a polymerisation reaction.
Complete the sentences using the words in the box.Â
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During polymerisation, ____________________ ethene molecules join together to form the large molecule, __________________.Â
These large molecules are called ___________________
Complete the repeating unit of the polymer formed by ethene.
What type of polymer does ethene form?
Tick (✓) one box.
 Condensation |  |  Addition |  |  Substitution |  |
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