The newest 14 of 14 written questions. Open one to see it on the real paper.
Poly(ethene) is made by addition polymerisation of ethene monomers. Draw the structure of poly(ethene) in the box on Figure 8.1.
See it on the paper →Poly(propene) is the polymer made by the addition polymerisation of propene. Complete the equation to show the formation of poly(propene). CH 3 H n C H C C C H n
See it on the paper →Complete the structure of the polymer made. C C
See it on the paper →The formation of nylon is an example of condensation polymerisation. Describe two differences between condensation polymerisation and addition polymerisation.
See it on the paper →Complete the sentences to describe another reaction of ethene. The polymer is a large molecule built up from many smaller ethene molecules called .
See it on the paper →State the name of the polymer that is made from ethene.
See it on the paper →State the type of polymerisation reaction that makes this polymer from ethene.
See it on the paper →State which compound forms compound E in an addition polymerisation reaction. Choose from A, B, C or D.
See it on the paper →Draw the structure of the small unit (molecule) from which poly(ethene) is made.
See it on the paper →Ethene molecules react together when heated to make a polymer. State the name of the polymer made from ethene.
See it on the paper →Which diagram represents the structure of the polymer formed from this monomer by addition polymerisation?
See it on the paper →Propene can be used as a monomer. Propene can be converted into a polymer, poly(propene), in an addition polymerisation reaction. Complete Fig. 5.3 to show the structure of poly(propene). H H C C
See it on the paper →Propene is used to make poly(propene). Draw the bonds to complete the structures of propene and poly(propene) in Fig. 8.1. CH 3 H CH 3 n C C C C H H H H H n Fig. 8.1
See it on the paper →Which statements about poly(ethene) molecules are correct?
See it on the paper →Many candidates only gave information about addition polymerisation or condensation polymerisation rather than giving information about both. The most common difference identified was that addition polymerisation produces the polymer only whereas condensation polymerisation produces the polymer along with a smaller molecule, usually water.
— Examiner report, May/June 2025, 0654/42 Q6(c) (Cambridge)
Some candidates knew that a polymer is a large molecule built up from many smaller ethene molecules called monomers. Few candidates knew that the polymer was poly(ethene) or that the reaction is an addition polymerisation.
— Examiner report, February/March 2025, 0654/32 Q6(b)(ii) (Cambridge)
Poly(ethene) was not well known as the polymer made from ethene.
— Examiner report, May/June 2023, 0654/33 Q8(c)(i) (Cambridge)
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