A Level Chemistry videos organised by AQA topic.

3.1.1 Atomic structure

Learn the topic

Atomic Structure - Full Topic Guide
Full Topic Guide / AS / Year 1

Atomic Structure - Part 1 of 2
Series Part / AS / Year 1

Mass Spectrometer and Isotopes - Part 2 of 2
Series Part / AS / Year 1

Exam question walkthroughs

Atomic Structure & Mass Spectrometer - Exam Question Walkthrough
Exam Question Walkthrough / AS / Year 1

Time of Flight Mass Spectrometer - Exam Question Walkthrough
Exam Question Walkthrough / AS / Year 1

Isotopes & Mass Spectrometer - Exam Question Walkthrough
Exam Question Walkthrough / AS / Year 1

Isotopes & Atomic Structure - Exam Question Walkthrough
Exam Question Walkthrough / AS / Year 1

Multiple-choice practice

Atomic Structure - Multiple Choice Walkthrough 1
Multiple Choice Walkthrough / AS / Year 1

Atomic Structure - Multiple Choice Walkthrough 2
Multiple Choice Walkthrough / AS / Year 1

Atomic Structure - Multiple Choice Walkthrough 3
Multiple Choice Walkthrough / AS / Year 1

3.1.2 Amount of substance

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The Mole & The Avogadro Constant
Explanation / AS / Year 1

Empirical and Molecular Formula & Water of Crystallisation
Explanation / AS / Year 1

Balanced Symbol & Ionic Equations
Explanation / AS / Year 1

The Ideal Gas Equation
Explanation / AS / Year 1

Reacting Mass & Limiting Reagents
Explanation / AS / Year 1

Atom Economy
Explanation / AS / Year 1

Titrations & Titration Calculations
Explanation / AS / Year 1

Back Titrations
Explanation / AS / Year 1

Exam question walkthroughs

Combustion Analysis - Exam Question Walkthrough
Exam Question Walkthrough / AS / Year 1

Titrations & Solubility - Exam Question Walkthrough
Exam Question Walkthrough / AS / Year 1

Water of Crystallisation - Exam Question Walkthrough
Exam Question Walkthrough / AS / Year 1

Multiple-choice practice

Amount of Substance - Multiple Choice Walkthrough 1
Multiple Choice Walkthrough / AS / Year 1

Amount of Substance - Multiple Choice Walkthrough 2
Multiple Choice Walkthrough / AS / Year 1

Amount of Substance - Multiple Choice Walkthrough 3
Multiple Choice Walkthrough / AS / Year 1

Amount of Substance - Multiple Choice Walkthrough 4
Multiple Choice Walkthrough / AS / Year 1

3.1.3 Bonding

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Bonding, Crystal Structures & Properties
Explanation / AS / Year 1

Shapes of Molecules
Explanation / AS / Year 1

Electronegativity & Polarity
Explanation / AS / Year 1

Intermolecular Forces
Explanation / AS / Year 1

Exam question walkthroughs

Bonding - Exam Question Walkthrough
Exam Question Walkthrough / AS / Year 1

Intermolecular Forces - Exam Question Walkthrough
Exam Question Walkthrough / AS / Year 1

Shapes of Molecules - Exam Question Walkthrough
Exam Question Walkthrough / AS / Year 1

Multiple-choice practice

Bonding, Shapes & Polarity - Multiple Choice Walkthrough 1
Multiple Choice Walkthrough / AS / Year 1

Bonding, Shapes & Polarity - Multiple Choice Walkthrough 2
Multiple Choice Walkthrough / AS / Year 1

3.1.4 Energetics

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Energetics | Hess' Law | Enthalpy Changes
Explanation / AS / Year 1

Calorimetry | Enthalpy Change Experiments
Explanation / AS / Year 1

Exam question walkthroughs

Energetics & Calorimetry - Exam Question Walkthrough
Exam Question Walkthrough / AS / Year 1

Multiple-choice practice

Energetics - Multiple Choice Walkthrough
Multiple Choice Walkthrough / AS / Year 1

Required Practical support

Required Practical 2: Calorimetry - Exam Question Walkthrough 1
Exam Question Walkthrough / AS / Year 1

Required Practical 2: Calorimetry - Exam Question Walkthrough 2
Exam Question Walkthrough / AS / Year 1

3.1.5 Kinetics

Learn the topic

Kinetics
Explanation / AS / Year 1

Maxwell Boltzmann Curves
Explanation / AS / Year 1

Multiple-choice practice

Kinetics - Multiple Choice Walkthrough 1
Multiple Choice Walkthrough / AS / Year 1

3.1.6 Chemical equilibria, Le Chatelier's principle and Kc

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Equilibrium & Le Chatelier
Explanation / AS / Year 1

Equilibrium Constant, Kc
Explanation / AS / Year 1

Exam question walkthroughs

Equilibrium Constant, Kc - Exam Question Walkthrough
Exam Question Walkthrough / AS / Year 1

Kc Equilibria - Exam Question Walkthrough
Exam Question Walkthrough / AS / Year 1

Multiple-choice practice

Equilibrium Constant, Kc - Multiple Choice Walkthrough
Multiple Choice Walkthrough / AS / Year 1

3.1.7 Oxidation, reduction and redox equations

Learn the topic

Redox Reactions - Full Topic Guide
Full Topic Guide / AS / Year 1

Multiple-choice practice

Redox Reactions - Multiple Choice Walkthrough
Multiple Choice Walkthrough / AS / Year 1

3.1.8 Thermodynamics

Learn the topic

Born Haber Cycles | Thermodynamics - Part 1 of 2
Series Part / Year 2

Gibbs Free Energy & Entropy | Thermodynamics - Part 2 of 2
Series Part / Year 2

Exam question walkthroughs

Born Haber Cycles | Thermodynamics - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Born Haber Cycles | Thermodynamics - Exam Question Walkthrough 2
Exam Question Walkthrough / Year 2

Entropy | Thermodynamics - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Gibbs Free Energy - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Born Haber Cycles & Lattice Enthalpy - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Multiple-choice practice

Thermodynamics - Multiple Choice Walkthrough
Multiple Choice Walkthrough / Year 2

Required Practical support

How does RP2 link to Thermodynamics?
Explanation / Year 2

3.1.9 Rate equations

Learn the topic

Rate Equations
Explanation / Year 2

Arrhenius Equation
Explanation / Year 2

Exam question walkthroughs

Rate Equations - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Rate Equation & Arrhenius Equation - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Arrhenius Equation - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Arrhenius Equation - Exam Question Walkthrough 2
Exam Question Walkthrough / Year 2

Multiple-choice practice

Rate Equation - Multiple Choice Walkthrough
Multiple Choice Walkthrough / Year 2

Required Practical support

Required Practical 7: Iodine Clock - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

3.1.10 Equilibrium constant Kp for homogeneous systems

Learn the topic

Equilibrium Constant, Kp
Explanation / Year 2

Exam question walkthroughs

Kp & Le Chatelier - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Equilibrium Constant, Kp - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Kp Calculations - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Equilibrium Constant, Kp - Exam Question Walkthrough 2
Exam Question Walkthrough / Year 2

3.1.11 Electrode potentials and electrochemical cells

Learn the topic

Electrode Potentials & Electrochemical Cells - Full Topic Guide
Full Topic Guide / Year 2

Exam question walkthroughs

Electrochemistry | Electrode Potentials - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Fuel Cells & Electrochemistry - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Electrode Potentials & Electrochemical Series - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Electrochemistry & Redox - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Multiple-choice practice

Electrode Potentials & Cells - Multiple Choice Walkthrough
Multiple Choice Walkthrough / Year 2

3.1.12 Acids and bases

Learn the topic

Acids, Bases and pH - Full Topic Guide
Full Topic Guide / Year 2

Strong and Weak acids, Ka, Kw and Strong Bases - Part 1 of 3
Series Part / Year 2

pH Curves, Indicators & pH of mixtures - Part 2 of 3
Series Part / Year 2

Buffer Action and Buffer pH - Part 3 of 3
Series Part / Year 2

Exam question walkthroughs

pH of Mixtures - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Kw, Ionic Product of Water - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

pH Curves & Indicators - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Buffer pH - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Weak Acids & Buffers - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

pH Calculations & pH Curves - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Weak acids, pH & buffers - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Acids, Bases & Kw - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Multiple-choice practice

Acids and Bases - Multiple Choice Walkthrough
Multiple Choice Walkthrough / Year 2

3.2.1 Periodicity

Learn the topic

Periodicity - Full Topic Guide
Full Topic Guide / AS / Year 1

Multiple-choice practice

Periodicity - Multiple Choice Walkthrough
Multiple Choice Walkthrough / AS / Year 1

3.2.2 Group 2, the alkaline earth metals

Learn the topic

Group 2 - Full Topic Guide
Full Topic Guide / AS / Year 1

Exam question walkthroughs

Group 2 - Exam Question Walkthrough
Exam Question Walkthrough / AS / Year 1

Multiple-choice practice

Group 2 - Multiple Choice Walkthrough
Multiple Choice Walkthrough / AS / Year 1

3.2.3 Group 7(17), the halogens

Learn the topic

Halogens - Full Topic Guide
Full Topic Guide / AS / Year 1

Exam question walkthroughs

Halogens - Exam Question Walkthrough
Exam Question Walkthrough / AS / Year 1

Chlorine, Redox & Shapes - Exam Question Walkthrough
Exam Question Walkthrough / AS / Year 1

Group 7 | Halogens & Halide Ions - Exam Question Walkthrough
Exam Question Walkthrough / AS / Year 1

Required Practical support

Required Practical 4: Testing for Ions - Exam Question Walkthrough
Exam Question Walkthrough / AS / Year 1

Required Practical 4: Testing for Ions - Exam Question Walkthrough 2
Exam Question Walkthrough / AS / Year 1

3.2.4 Properties of Period 3 elements and their oxides

Learn the topic

Properties of Period 3 Elements and Their Oxides
Explanation / Year 2

Exam question walkthroughs

Period 3 Oxides - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

3.2.5 Transition metals

Learn the topic

Transition Metals - Full Topic Guide
Full Topic Guide / Year 2

Transition Metals 1 | Complexes, Isomerism & Ligand Substitution
Explanation / Year 2

Transition Metals 2 | Colour & Complex Ions
Explanation / Year 2

Transition Metals 3 | Variable Oxidation States & Redox Titrations
Explanation / Year 2

Transition Metals 4 | Catalysts
Explanation / Year 2

Exam question walkthroughs

Redox Titrations - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Catalysts - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Autocatalysis - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Transition Metals & Reactions of Aqueous Ions - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Transition Metal Colours - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

3.2.6 Reactions of ions in aqueous solution

Learn the topic

Required Practical 11: Reactions of Ions in Aqueous Solutions
Explanation / Year 2

Exam question walkthroughs

Transition Metals & Aqueous Solutions - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Required Practical support

Required Practical 11: Reactions of Ions in Aqueous Solutions
Explanation / Year 2

3.3.1 Introduction to organic chemistry

Learn the topic

Year 1 Mechanisms
Explanation / AS / Year 1

Year 2 Mechanisms
Explanation / Year 2

Nomenclature | Naming Organic Compounds
Explanation / AS / Year 1

Organic Formulae & Homologous Series
Explanation / AS / Year 1

Isomers
Explanation / AS / Year 1

Multiple-choice practice

Nomenclature - Multiple Choice Walkthrough
Multiple Choice Walkthrough / AS / Year 1

Isomerism & Nomenclature - Multiple Choice Walkthrough
Multiple Choice Walkthrough / AS / Year 1

E/Z Isomerism - Multiple Choice Walkthrough
Multiple Choice Walkthrough / AS / Year 1

3.3.2 Alkanes

Learn the topic

Alkanes - Full Topic Guide
Full Topic Guide / AS / Year 1

Free Radical Substitution
Explanation / AS / Year 1

Exam question walkthroughs

Free Radical Substitution - Exam Question Walkthrough
Exam Question Walkthrough / AS / Year 1

Multiple-choice practice

Alkanes - Multiple Choice Walkthrough
Multiple Choice Walkthrough / AS / Year 1

Alkanes - Multiple Choice Walkthrough 2
Multiple Choice Walkthrough / AS / Year 1

3.3.3 Halogenoalkanes

Learn the topic

Halogenoalkanes
Explanation / AS / Year 1

Exam question walkthroughs

Halogenoalkanes - Exam Question Walkthrough
Exam Question Walkthrough / AS / Year 1

Multiple-choice practice

Halogenoalkanes - Multiple Choice Walkthrough
Multiple Choice Walkthrough / AS / Year 1

Halogenoalkanes - Multiple Choice Walkthrough 2
Multiple Choice Walkthrough / AS / Year 1

3.3.4 Alkenes

Learn the topic

Alkenes - Full Topic Guide
Full Topic Guide / AS / Year 1

3.3.5 Alcohols

Learn the topic

Alcohols - Full Topic Guide
Full Topic Guide / AS / Year 1

3.3.6 Organic analysis

Learn the topic

Organic Analysis
Explanation / AS / Year 1

Exam question walkthroughs

Organic Analysis - Exam Question Walkthrough
Exam Question Walkthrough / AS / Year 1

3.3.7 Optical isomerism

Learn the topic

Optical Isomerism
Explanation / Year 2

3.3.8 Aldehydes and ketones

Learn the topic

Aldehydes & Ketones - Full Topic Guide
Full Topic Guide / Year 2

Nucleophilic Addition Mechanism
Explanation / Year 2

Exam question walkthroughs

Naming Carbonyl Compounds - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

3.3.9 Carboxylic acids and derivatives

Learn the topic

Carboxylic acids, Esters and Acylation
Explanation / Year 2

Acylation
Explanation / Year 2

Nucleophilic Addition - Elimination
Explanation / Year 2

Exam question walkthroughs

Ester Preparation - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Aspirin Preparation - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Required Practical support

Required Practical 10: Preparation of Organic Solids & Liquids
Explanation / Year 2

Required Practical 10: Melting Point Determination
Explanation / Year 2

Aspirin Preparation - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Ester Preparation - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Required Practical 10: Preparing an Organic Substance - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Required Practical 10: Preparing an Organic Substance - Exam Question Walkthrough 2
Exam Question Walkthrough / Year 2

3.3.10 Aromatic chemistry

Learn the topic

Aromatic Chemistry
Explanation / Year 2

Electrophilic Substitution Mechanism
Explanation / Year 2

Exam question walkthroughs

Aromatic Chemistry - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

Aromatic Chemistry - Exam Question Walkthrough 2
Exam Question Walkthrough / Year 2

3.3.11 Amines

Learn the topic

Amines - Full Topic Guide
Full Topic Guide / Year 2

3.3.13 Amino acids, proteins and DNA

Learn the topic

Amino Acids, Proteins, Enzymes and DNA
Explanation / Year 2

Exam question walkthroughs

Amino Acids - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

DNA - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

3.3.15 Nuclear magnetic resonance spectroscopy

Learn the topic

NMR
Explanation / Year 2

Exam question walkthroughs

NMR Spectroscopy - Exam Question Walkthrough
Exam Question Walkthrough / Year 2

3.3.16 Chromatography

Exam question walkthroughs

Chromatography - Exam Question Walkthrough
Exam Question Walkthrough / Year 2