Chemistry

Choose your board and qualification

These are distinct qualifications with different syllabuses and assessments. Pick the one your school enters you for.

• Cambridge IGCSE Chemistry Syllabus 0620
• Cambridge O Level Chemistry Syllabus 5070
• Cambridge A Level Chemistry Syllabus 9701

Study resources

• Study Guides

  Acids and Bases: The Brønsted-Lowry Theory

  The Brønsted-Lowry theory, strong vs weak acids and bases, neutralisation, and reading titration curves and indicator choice, for Cambridge International AS & A Level Chemistry 9701.

  Chemistry · AS LEVEL

• Study Guides

  Addition Polymerisation

  Deducing polymer repeat units and monomers, and the disposal problems addition polymers cause, for Cambridge International AS & A Level Chemistry 9701.

  Chemistry · AS LEVEL

• Study Guides

  Alcohols: Reactions and Oxidation

  Production, oxidation and distinguishing tests for primary, secondary and tertiary alcohols, for Cambridge International AS & A Level Chemistry 9701.

  Chemistry · AS LEVEL

• Study Guides

  Analytical Techniques: Infrared Spectroscopy and Mass Spectrometry

  Reading an infrared spectrum for functional groups, and interpreting a mass spectrum for relative atomic mass, molecular mass, fragmentation and halogen content, for Cambridge International AS & A Level Chemistry 9701.

  Chemistry · AS LEVEL

• Study Guides

  Atomic Structure: Particles, Radius and Isotopes

  Subatomic particles, deflection in an electric field, atomic and ionic radius trends, and isotopes, for Cambridge International AS & A Level Chemistry 9701.

  Chemistry · AS LEVEL

• Study Guides

  Carbonyl Compounds: Aldehydes and Ketones

  Producing and reducing aldehydes and ketones, the nucleophilic addition mechanism with HCN, and the tests that identify and distinguish them, for Cambridge International AS & A Level Chemistry 9701.

  Chemistry · AS LEVEL

• Study Guides

  Carboxylic Acids and Esters

  Producing and reacting carboxylic acids, esterification, and the difference between acid and alkaline ester hydrolysis, for Cambridge International AS & A Level Chemistry 9701.

  Chemistry · AS LEVEL

• Study Guides

  Atomic Structure: Orbitals and Ionisation Energy

  Electronic configuration by orbital, and how ionisation energy trends and data are explained and interpreted, for Cambridge International AS & A Level Chemistry 9701.

  Chemistry · AS LEVEL

• Study Guides

  Atoms, Molecules and Stoichiometry at AS

  Ionic formulae from Roman-numeral oxidation numbers, ionic equations, and stoichiometric calculations including limiting reagent and percentage yield, for Cambridge International AS & A Level Chemistry 9701.

  Chemistry · AS LEVEL

• Study Guides

  Chemical Bonding: Electronegativity, Ionic and Metallic Bonds

  Electronegativity trends, the electrostatic models of ionic and metallic bonding, and using electronegativity to predict bond type, for Cambridge International AS & A Level Chemistry 9701.

  Chemistry · AS LEVEL

• Study Guides

  Chemical Bonding: Shapes and Intermolecular Forces

  Orbital overlap, VSEPR shapes and bond angles, hydrogen bonding and van der Waals' forces, for Cambridge International AS & A Level Chemistry 9701.

  Chemistry · AS LEVEL

• Study Guides

  Chemical Energetics: Hess's Law and Enthalpy Cycles

  Standard enthalpy changes, bond-energy calculations, and using Hess's law to construct enthalpy cycles, for Cambridge International AS & A Level Chemistry 9701.

  Chemistry · AS LEVEL

• Study Guides

  Chemical Equilibria: Kc, Kp and Le Chatelier's Principle

  Dynamic equilibrium, Le Chatelier's principle, and the Kc and Kp equilibrium-constant expressions, including the Haber and Contact processes, for Cambridge International AS & A Level Chemistry 9701.

  Chemistry · AS LEVEL

• Study Guides

  Group 17: The Halogens

  Physical and chemical trends down Group 17, halide-ion reducing power, the silver nitrate and concentrated sulfuric acid tests, and chlorine's disproportionation reactions, for Cambridge International AS & A Level Chemistry 9701.

  Chemistry · AS LEVEL

• Study Guides

  Group 2: The Alkaline Earth Metals

  Reactions of the Group 2 metals and their oxides, hydroxides, carbonates and nitrates, and the solubility and thermal-stability trends down the group, for Cambridge International AS & A Level Chemistry 9701.

  Chemistry · AS LEVEL

• Study Guides

  Halogenoalkanes: Nucleophilic Substitution and Elimination

  SN1 and SN2 nucleophilic substitution, elimination, and the reactivity trend across halogenoalkanes, for Cambridge International AS & A Level Chemistry 9701.

  Chemistry · AS LEVEL

• Study Guides

  Nitrogen and Sulfur: Reactivity and Atmospheric Chemistry

  Why nitrogen is so unreactive, the basicity of ammonia, and the role of nitrogen oxides in photochemical smog and acid rain, for Cambridge International AS & A Level Chemistry 9701.

  Chemistry · AS LEVEL

• Study Guides

  Nitrogen Compounds: Amines and Nitriles

  Producing primary amines, nitriles and hydroxynitriles, and how they connect to the halogenoalkane and carbonyl chemistry already covered, for Cambridge International AS & A Level Chemistry 9701.

  Chemistry · AS LEVEL

• Study Guides

  Hydrocarbons: Alkanes and Alkenes

  Free-radical substitution in alkanes and electrophilic addition in alkenes, with full mechanisms, for Cambridge International AS & A Level Chemistry 9701.

  Chemistry · AS LEVEL

• Study Guides

  Organic Synthesis: Planning Multi-Step Routes

  Identifying functional groups, planning multi-step synthetic routes, and analysing given routes, using every AS organic reaction together, for Cambridge International AS & A Level Chemistry 9701.

  Chemistry · AS LEVEL

• Study Guides

  The Periodic Table: Periodicity Across Period 3

  Physical and chemical periodicity across Period 3 (Na to Ar), including oxide and chloride reactions with water, for Cambridge International AS & A Level Chemistry 9701.

  Chemistry · AS LEVEL

• Study Guides

  Reaction Kinetics: Collision Theory and Catalysis

  Collision theory, activation energy, the Boltzmann distribution, and how catalysts work, for Cambridge International AS & A Level Chemistry 9701.

  Chemistry · AS LEVEL

• Study Guides

  Redox Processes: Oxidation Numbers and Electron Transfer

  Calculating and using oxidation numbers, balancing equations by oxidation-number change, and disproportionation, for Cambridge International AS & A Level Chemistry 9701.

  Chemistry · AS LEVEL

• Study Guides

  States of Matter: Ideal Gases and Structure

  The ideal gas equation pV = nRT, and the four types of giant/molecular lattice structure and how they determine physical properties, for Cambridge International AS & A Level Chemistry 9701.

  Chemistry · AS LEVEL

• Revision Notes

  Atomic Structure

  Protons, neutrons and electrons, atomic and mass number, electronic configuration by shell, and isotopes, for Cambridge IGCSE 0620 and O Level 5070.

  Chemistry · IGCSE, O LEVELS

• Study Guides

  Atoms, Elements and Compounds

  Elements, compounds and mixtures, atomic structure, electronic configuration and isotopes for Cambridge IGCSE 0620 and O Level 5070.

  Chemistry · IGCSE, O LEVELS

• Study Guides

  Formulae, Equations and the Mole

  Formulae, balanced equations, relative masses and mole calculations for Cambridge IGCSE 0620 and O Level 5070 — where the two qualifications differ most.

  Chemistry · IGCSE, O LEVELS

• Study Guides

  Identification of Ions and Gases

  The reagents, observations and conclusions for identifying anions, cations, gases and flame colours, for Cambridge IGCSE 0620 and O Level 5070.

  Chemistry · IGCSE, O LEVELS

• Study Guides

  Ionic, Covalent and Metallic Bonding

  Ionic, covalent, giant covalent and metallic bonding for Cambridge IGCSE 0620 and O Level 5070, with structure explaining properties throughout.

  Chemistry · IGCSE, O LEVELS

• Study Guides

  Organic Mechanisms: An Introduction

  The naming conventions, mechanism vocabulary and isomerism you need before studying any specific organic reaction, for Cambridge International AS & A Level Chemistry 9701.

  Chemistry · AS LEVEL

• Study Guides

  The Periodic Table: Groups and Trends

  How the Periodic Table is arranged, and the trends in Group I, Group VII, the transition elements and the noble gases, for Cambridge IGCSE 0620 and O Level 5070.

  Chemistry · IGCSE, O LEVELS

• Study Guides

  Rates of Reaction and Reversible Reactions

  Collision theory, the factors that change reaction rate, reversible reactions, equilibrium, and the Haber and Contact processes, for Cambridge IGCSE 0620 and O Level 5070.

  Chemistry · IGCSE, O LEVELS

• Study Guides

  Redox Reactions

  Oxidation and reduction by oxygen transfer, electron transfer and oxidation number, for Cambridge IGCSE 0620 and O Level 5070.

  Chemistry · IGCSE, O LEVELS

• Study Guides

  States of Matter and Kinetic Particle Theory

  Particle arrangement, changes of state and diffusion for Cambridge IGCSE 0620 and O Level 5070, with IGCSE Core and Extended outcomes clearly labelled.

  Chemistry · IGCSE, O LEVELS

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