Study guides

Alcohols

AQA·A-Level

7405

Master the production, classification, and reactions of alcohols. This topic is a heavy hitter for marks in organic chemistry, testing your ability to link reaction conditions to specific products.

Alkanes

AQA·A-Level

Master AQA A-Level Chemistry's core topic, Alkanes (3.2). This guide breaks down everything from boiling point trends governed by van der Waals forces to the critical mechanisms of combustion and free-radical substitution, providing examiner insights to help you secure top marks.

Alkenes

AQA·A-Level

Unlock the secrets of carbon-based life with this essential guide to Organic Chemistry. From mastering IUPAC nomenclature to predicting complex reaction pathways, this module builds the foundation for understanding everything from fuels to pharmaceuticals."

Atomic structure

AQA·A-Level

7405

Atomic structure is the foundation of all chemistry. Understanding protons, neutrons, electrons, and how they arrange themselves explains why elements behave the way they do—and it's a heavily tested, high-mark topic in the exam.

Chemical equilibria, Le Chatelier’s principle and Kc

AQA·A-Level

7405

An examiner-focused guide to dynamic equilibrium, Le Chatelier’s principle, industrial compromise conditions and the Kc extension. It combines mark-scheme language, worked solutions, visual assets, diagrams and a 10-minute audio recap.

Group 2, the alkaline earth metals

AQA·A-Level

7405

An exam-focused guide to Group 2 trends, reactions, solubility, applications and sulfate testing. It explicitly distinguishes GCSE enrichment from the AQA A-level 3.2.2 source reference and builds explanation chains that gain marks.

Halogenoalkanes

AQA·A-Level

7405

Master the reactions and mechanisms of Halogenoalkanes! This guide covers everything from nucleophilic substitution and elimination to the environmental impact of CFCs on the ozone layer.

Optical isomerism (A-level only)

AQA·A-Level

7405

Optical isomerism turns a flat organic formula into a 3D exam problem: spot the chiral centre, draw the two enantiomers and explain their effect on plane-polarised light. Secure these ideas and you can reliably earn the marks in short definitions, stereochemical drawings and synoptic carbonyl-mechanism questions.

Properties of Period 3 elements and their oxides (A-level only)

AQA·A-Level

7405

Master the properties of Period 3 elements and their oxides. This topic connects atomic structure to macroscopic properties and acid-base behaviour, featuring classic 6-mark questions on melting point trends and amphoteric reactions.

Rate equations (A-level only)

AQA·A-Level

7405

Master the mathematics of reaction kinetics with this comprehensive guide to A-level rate equations. You'll learn to deduce reaction orders from experimental data, calculate the rate constant, and use the Arrhenius equation to link temperature to activation energy.

Reactions of ions in aqueous solution (A-level only)

AQA·A-Level

7405

This A-level-only topic turns vivid test-tube observations into high-mark chemistry. Master the aqua-ion acidity explanation, the diagnostic precipitate colours, and the carbonate rule, and you can confidently identify Fe²⁺, Cu²⁺, Fe³⁺, and Al³⁺ while explaining every observation.

Thermodynamics

AQA·A-Level

Thermodynamics (AQA 3.1.8) is the powerhouse topic of A-Level Chemistry, combining Born-Haber cycles — which reveal the true strength of ionic bonds through Hess's Law — with Gibbs Free Energy, the ultimate arbiter of whether a reaction can actually occur. Mastering this topic means understanding not just the maths, but the deep physical reasoning behind why ionic compounds form, why some reactions only happen at high temperatures, and why real ionic compounds deviate from the perfect ionic model. Examiners consistently reward candidates who can apply ΔG = ΔH − TΔS with precision and explain covalent character with chemical insight.