Buckminsterfullerene melts at a much lower temperature than graphite, although both contain only carbon atoms. Which statement explains why?
The covalent bonds inside each buckminsterfullerene molecule are weak and break easily.
The delocalised electrons in buckminsterfullerene are released as soon as it is heated up.
The rings of carbon atoms in each buckminsterfullerene molecule are pulled apart on heating.
Only the weak forces between buckminsterfullerene molecules need to be overcome on melting.
40 exam-style questions on AQA GCSE Chemistry 2.3 Structure and bonding of carbon, covering 2.3.1 Diamond, 2.3.2 Graphite, and 2.3.3 Graphene and fullerenes. Each one has a worked solution and a mark scheme showing where the marks go.