Which substance consists of small molecules?
Hydrogen chloride, HCl\text{HCl}HCl
Silicon dioxide, SiO2\text{SiO}_2SiO2
Magnesium oxide, MgO\text{MgO}MgO
Copper metal, Cu\text{Cu}Cu
98 exam-style questions on AQA GCSE Chemistry 2.1 Chemical bonds, ionic, covalent and metallic, covering 2.1.1 Chemical bonds, 2.1.2 Ionic bonding, 2.1.3 Ionic compounds, 2.1.4 Covalent bonding, and 2.1.5 Metallic bonding. Each one has a worked solution and a mark scheme showing where the marks go.