What is the chemical formula of magnesium chloride?
MgCl\text{MgCl}MgCl
Mg2Cl\text{Mg}_2\text{Cl}Mg2Cl
MgCl2\text{MgCl}_2MgCl2
Mg2Cl2\text{Mg}_2\text{Cl}_2Mg2Cl2
230 exam-style questions on Edexcel GCSE Chemistry 1.1 Formulae, equations and hazards, covering 1.1.1 Formulae, word and balanced equations, 1.1.2 Balanced ionic equations, and 1.1.3 Hazard symbols and risk in practical work. Each one has a worked solution and a mark scheme showing where the marks go.