A manufacturer uses waste pieces of a thermosoftening polymer to make new plant pots. The waste pieces are heated until soft and then pressed into moulds.
Which change allows the softened polymer to fill the mould?
Cross-links between separate polymer chains are temporarily broken.
Strong covalent bonds within each polymer chain are overcome.
Weak forces between separate polymer chains are overcome.
The polymer chains are separated completely into their monomers.
118 exam-style questions on AQA GCSE Chemistry 10.3 Using materials, covering 10.3.1 Corrosion and its prevention, 10.3.2 Alloys as useful materials, and 10.3.3 Ceramics, polymers and composites. Each one has a worked solution and a mark scheme showing where the marks go.