Chemistry study guides

An overview of the Acids, salts and analysis module in WJEC GCSE Chemistry (topic 2.2), mapping acids, bases and the pH scale, neutralisation and reactions of acids, preparing soluble and insoluble salts, and the chemical tests for gases, cations and anions.

An overview of the Bonding, structure and properties module in WJEC GCSE Chemistry (topic 2.1), mapping ionic, covalent, giant covalent and metallic bonding, alloys, and how to deduce bonding from the properties of a substance.

An overview of the Crude oil and organic chemistry module in WJEC GCSE Chemistry (topic 2.5), mapping crude oil and fractional distillation, alkanes and alkenes and cracking, alcohols and ethanol, and addition polymers and their disposal.

An overview of the Metals and their extraction module in WJEC GCSE Chemistry (topic 2.3), mapping the reactivity series and displacement, extraction by carbon reduction and the blast furnace, electrolysis and the extraction of aluminium, and alloys and recycling.

An overview of the Rates, energy and equilibria module in WJEC GCSE Chemistry, mapping topics 1.5, 2.4 and 2.6: rate of reaction and collision theory, factors affecting rate and catalysts, energy changes and reaction profiles, bond energy calculations, reversible reactions and equilibrium, and the Haber and Contact processes.

An overview of the Substances and atomic structure module in WJEC GCSE Chemistry, mapping topics 1.1 and 1.2: elements, compounds and mixtures, equations and conservation of mass, chromatography, atomic structure and isotopes, electronic structure, and the Periodic Table and its groups.

An overview of the Earth, atmosphere and resources module in WJEC GCSE Chemistry (topics 1.3, 1.4 and 1.6), mapping water and its treatment, the composition and evolution of the atmosphere, climate change and air quality, and limestone and its uses.