OCR A Level Chemistry A Exam Questions By Topic

Moles Determination, Acid-Base Titration, Determination of Enthalpy Changes

Qualitative Analysis of Ions, Synthesis of a Haloalkane, Preparation of Cyclohexene, Oxidation of Ethanol, Hydration of Hex-1-ene

Synthesis of Aspirin, Preparation of Benzoic Acid, Preparation of Methyl 3-Nitrobenzoate, Qualitative Analysis of Organic Functional Groups, Electrochemical Cells

Rate of Decomposition of Hydrogen Peroxide, Rate of Reaction - Calcium Carbonate & Hydrochloric Acid, Reaction - Magnesium & Hydrochloric Acid, Rates – Iodine Clock, Rates - Thiosulfate, Rates - Activation Energy, pH – Problem Solving, pH – Titration Curves, pH – Acids & Buffers

Atomic Structure & Isotopes, Atomic Structure & Mass Spectrometry, Compounds, Formulae & Equations

Amount of Substance, Determining Formulae, Reaction Calculations, The Ideal Gas Equation, Percentage Yield & Atom Economy

Acids, Acid-base Titrations, Redox

Electron Structure, Ionic Bonding & Structure, Covalent Bonding & Structure

The Shapes of Simple Molecules & Ions, Electronegativity & Bond Polarity, Intermolecular Forces

Periodicity, Ionisation Energy, Structure & Physical Properties

Group 2 Elements, Group 2 Compounds

The Halogens, Uses of Chlorine, Qualitative Analysis

Enthalpy Changes, Calorimetry, Bond Enthalpies, Hess' Law

Simple Collision Theory, Catalysis, The Boltzmann Distribution

Dynamic Equilibrium, Le Chatelier’s Principle, The Equilibrium Constant, Kc

Chemical Names & Formulae, Functional Groups, Structural Isomerism, Reaction Mechanisms

Introduction to Alkanes, Reactions of Alkanes, Free Radical Substitution of Alkanes

Introduction to Alkenes, Stereoisomerism in Alkenes, Addition Reactions of Alkenes, Electrophilic Addition, Polymers from Alkenes

Properties of Alcohols, Reactions of Alcohols

Reactions of Haloalkanes, Nucleophilic Substitution of Haloalkanes, Hydrolysis of Primary Haloalkanes, Environmental Concerns of Organohalogen Use

Techniques, Synthetic Routes

Infrared Spectroscopy, Mass Spectrometry, Combined Techniques

Rates & Orders, Concentration-Time Graphs, Rate-Concentration Graphs, Investigating Reaction Rates, Rate-determining Step, Temperature & Rate Constants, The Arrhenius Equation

Equilibrium Terms, Kc & Kp, Equilibrium Constants & Changing Conditions

Acids & Bases, Ka, pH & Kw, pH Calculations, Buffers, Neutralisation

Lattice Enthalpy, Building Born-Haber Cycles, Calculations Using Born-Haber Cycles, Enthalpy of Solution & Hydration, The Effect of Ionic Charge & Radius on Enthalpy, Entropy, The Feasibillity of a Reaction, Gibbs Free Energy, ΔG

Redox, Redox Titrations, Electrode Potentials, Electrode Potential Calculations, Cells

Transition Elements, Ligands & Complex Ions, Isomerism in Transition Element Complexes, Ligand Substitution Reactions, The Biochemical Importance of Iron in Haemoglobin, Redox Reactions of Transition Elements, Qualitative Analysis

Benzene, Electrophilic Substitution, Phenol, Directing Effects

Reactions of Carbonyl Compounds, Testing for Carbonyl Compounds

Carboxylic Acids, Esters, Acyl Chlorides

Amines, Preparing Amines, Amino acids, Amides

Optical Isomers, Identification of Chiral Centres

Condensation Polymers, Polymer Repeat Units

Nitriles, Substituted Aromatic Carbon-carbon Bond Formation

Techniques, Synthetic Routes

Thin Layer Chromatography, TLC, Gas Chromatography, GC, Qualitative Analysis, Carbon-13 NMR, Proton NMR, Combined Techniques