A laboratory bench has a polymer coating. The coating contains strong cross-links between the polymer chains. A sample of the coating is heated to a temperature at which a thermosoftening polymer would melt.
Which statement describes what happens to the sample?
It softens and bends while remaining solid.
It melts and can be remoulded into a new shape.
It keeps its shape and does not melt.
It becomes brittle and breaks into small pieces.
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.