A chemist can study one methane molecule or a sample containing many methane molecules.
Which investigation can only be carried out on the sample?
Identifying the elements present in a methane molecule.
Determining whether the bonds within methane are covalent.
Measuring the temperature at which solid methane melts.
Determining whether a methane molecule has an overall charge.
122 exam-style questions on OCR GCSE Chemistry 2.3 Properties of materials, covering 2.3.1 Carbon bonding and the variety of organic compounds, 2.3.2 Diamond, graphite, fullerenes and graphene, 2.3.3 Bond strength, changes of state and predicting states, 2.3.4 Bulk properties and types of bonding, and 2.3.5 Nanoparticles: scale, surface area, uses and risks. Each one has a worked solution and a mark scheme showing where the marks go.