Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Chapter
Synthetic Polymers
107 practice questions
Topics covered
Practice questions
11–20 of 107
Question 11
3 marks · Normal
Answer and see the solution →Explain why the preparation of addition polymers such as poly(ethene) does not produce any waste products. State one advantage and one disadvantage of this.
Question 12
4 marks · Normal
Answer and see the solution →The table below shows information about three addition polymers and the number of carbon atoms in their repeat units.
Polymer Monomer Number of C atoms in repeat unit Poly(ethene) ethene 2 Poly(propene) propene 3 Poly(chloroethene) chloroethene 2 (a)[1 mark]Which polymer in the table has a repeat unit containing the highest number of carbon atoms? Explain your answer.
(b)[2 marks]Draw the repeat unit for poly(propene).
(c)[1 mark]Name the monomer used to make poly(chloroethene).
Question 13
1 mark · Normal
Answer and check →Which statement about the preparation of poly(ethene) by addition polymerisation is correct?
- A.The monomers react and produce water as a by-product.
- B.The reaction requires a catalyst.
- C.The polymerisation uses up all atoms from the ethene monomers.
- D.It forms poly(ethene) and carbon dioxide.
Question 14
2 marks · Normal
Answer and see the solution →Give the name of the addition polymer formed from tetrafluoroethene, and draw its repeat unit using displayed formulae.
Question 15
4 marks · Normal
Answer and see the solution →Addition polymers such as poly(chloroethene) are made from small molecules called monomers.
(a)[1 mark]Name the type of reaction used to make poly(chloroethene).
(b)[1 mark]Describe the role of an initiator in the preparation of addition polymers.
(c)[1 mark]Draw the structure of chloroethene, the monomer used to make poly(chloroethene).
(d)[1 mark]State one use of poly(chloroethene).
Question 16
3 marks · Normal
Answer and see the solution →A monomer with the formula (chloroethene) undergoes addition polymerisation to form poly(chloroethene).
Calculate the relative molecular mass (Mr) of one repeat unit of poly(chloroethene).
Show your working, including the atomic masses you use, and draw the displayed formula of the repeat unit.
(a)[2 marks]Calculate the relative molecular mass (Mr) of one repeat unit of poly(chloroethene). Use these atomic masses: C = 12, H = 1, Cl = 35.5.
(b)[1 mark]Draw the displayed formula of one repeat unit of poly(chloroethene).
Question 17
2 marks · Hard
Answer and see the solution →The structure below shows part of a polymer chain.
State the name of the monomer used to make this polymer. Draw the displayed formula of the repeat unit for this polymer.
Question 18
5 marks · Hard
Answer and see the solution →Describe how poly(ethene) is prepared in the chemical industry.
(a)[1 mark]State the name and formula of the monomer used to make poly(ethene).
(b)[2 marks]Write the equation for the polymerisation reaction, using displayed formulae for both the monomer and the polymer's repeat unit, and including 'n' notation.
(c)[1 mark]State the type of reaction used to produce poly(ethene).
(d)[1 mark]Describe the essential conditions needed for this reaction.
Question 19
2 marks · Hard
Answer and see the solution →A student is given the displayed formula for the repeat unit of a polymer:
Deduce the structural formula of the monomer, and write its name.
Question 20
1 mark · Easy
Answer and see the solution →State the name of the monomer used to make poly(chloroethene).