- Question 19 marks
Identifying molecules: elements, fuels, unsaturated compounds, the composition of air and Haber process reactants.
- Question 213 marks
Extracting aluminium by electrolysis: the ore, cryolite, conduction in the melt and the electrode half-equations.
- Question 319 marks
Sulfur chlorides: bonding and melting points, a dot-and-cross diagram, shifting an equilibrium, and collision theory.
- Question 414 marks
Making insoluble silver bromide by precipitation: ionic equation, concentration, moles and mass of product.
- Question 511 marks
Cracking alkanes to make alkenes, and addition polymerisation of propene.
- Question 614 marks
Polyamides and polyesters: linkages, monomers and condensation polymerisation.