A student makes three statements about polymers and their uses.
Statement 1: poly(ethene) bags soften when heated because the covalent bonds within the polymer chains break
Statement 2: poly(chloroethene) is used for window frames and water pipes because it is rigid and does not rot or corrode
Statement 3: PTFE is used to coat frying pans because it is unreactive and has a low-friction surface
Which statements are correct?
2 only
1 and 2 only
2 and 3 only
1, 2 and 3
37 exam-style questions on Edexcel GCSE Chemistry 10.3 Polymers, covering 10.3.1 Addition polymerisation of alkenes, 10.3.2 Uses and properties of polymers, 10.3.3 Condensation polymers and polyesters, 10.3.4 Problems with polymers and recycling, and 10.3.5 Natural polymers: DNA, starch and proteins. Each one has a worked solution and a mark scheme showing where the marks go.