Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Unit
Organic Chemistry
785 practice questions
Topics covered
Practice questions
271–280 of 317 · Easy
Question 271
2 marks · Easy
Answer and see the solution →Explain why addition polymerisation produces only the polymer and no other products.
Question 272
3 marks · Easy
Answer and see the solution →The table below shows the repeat units of three different addition polymers.
Polymer Repeat Unit (displayed formula) Poly(ethene) —CH2—CH2— Poly(propene) —CH2—CH(CH3)— Poly(tetrafluoroethene) —CF2—CF2— (a)[1 mark]Which polymer's repeat unit contains a methyl group (—CH3)?
(b)[1 mark]Give the name of the monomer used to make poly(tetrafluoroethene).
(c)[1 mark]State the general name for the small molecules from which addition polymers are made.
Question 273
3 marks · Easy
Answer and see the solution →The monomer propene has the formula .
(a)[2 marks]Draw the displayed formula of the repeat unit of poly(propene).
(b)[1 mark]Write the name of the polymer formed.
Question 274
2 marks · Easy
Answer and see the solution →A segment of the addition polymer poly(propene) contains 40 repeat units. Each repeat unit has the formula . Calculate the relative molecular mass (Mr) of this portion of the polymer. (Relative atomic masses: C = 12, H = 1)
Question 275
1 mark · Easy
Answer and see the solution →State the type of reaction used to make poly(ethene) from ethene.
Question 276
2 marks · Easy
Answer and see the solution →Poly(propene) is made by the addition polymerisation of propene monomers.
State the number of carbon atoms present in the repeat unit of poly(propene).
Question 277
1 mark · Easy
Answer and see the solution →State the name of the monomer used to make poly(chloroethene).
Question 278
3 marks · Easy
Answer and see the solution →Poly(propene) is a polymer formed from propene.
(a)[1 mark]Draw the displayed formula of a propene molecule.
(b)[1 mark]Write the structural formula for the repeat unit in poly(propene).
(c)[1 mark]Name one use of poly(propene).
Question 279
3 marks · Easy
Answer and see the solution →The table shows the formulae of some monomers and their corresponding polymers.
Polymer Monomer formula poly(ethene) CH2=CH2 poly(chloroethene) CH2=CHCl poly(propene) CH3CH=CH2 (a)[1 mark]Which polymer in the table is made from a monomer containing a chlorine atom?
(b)[1 mark]Give the name of the monomer used to make poly(ethene).
(c)[1 mark]Write the structural formula of poly(propene)'s repeat unit.
Question 280
1 mark · Easy
Answer and see the solution →Write the displayed formula of the monomer used to make poly(ethene).