The table below shows whether different substances can conduct electricity:
| Substance | State | Conducts electricity? |
|---|---|---|
| Solid sodium chloride | Solid | No |
| Molten sodium chloride | Liquid | Yes |
| Silicon dioxide | Solid | No |
| Copper | Solid | Yes |
Explain these results by referring to the bonding, structures, and particles in each of the substances.
59 exam-style questions on Edexcel GCSE Chemistry 2.5 Types of substance, covering 2.5.1 Classifying substances by structure and bonding, 2.5.2 Properties of ionic and simple molecular substances, 2.5.3 Giant covalent structures: diamond and graphite, 2.5.4 Fullerenes, graphene and simple polymers, 2.5.5 Properties of metals and non-metals, and 2.5.6 Limitations of bonding models and representations. Each one has a worked solution and a mark scheme showing where the marks go.