OCR-A A-Level Chemistry

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Everything you need to pass

A-Level Chemistry

Revision Videos and Quizzes

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Organic Chemistry Drawing Paper ~ A4 pad ~ 25 sheets

9.00

Module 2 - Foundations in Chemistry
Molecule 3 – Periodic table and energy
Module 4 – Core organic Chemistry
Module 5 – Physical Chemistry and transition elements
Module 6 – Organic Chemistry and analysis
What's on each paper?

Atoms and reactions

· Isotopes | Video 1 | Video 2 | Quiz |

· Mass spectrometry | Quiz |

Compounds, formulae and equations

· Formula of compounds and ions | Quiz |

· Ionic equations | Video | Quiz |

· Moles and the Avogadro constant | Video | Quiz |

· Empirical and molecular formula | Video | Quiz |

· Volume of gases | Quiz |

· Ideal gas equation | Quiz |

· Percentage yields | Video | Quiz |

· Atom economy | Video | Quiz |

· AQA Required Practical – Measuring the rate of a reaction by loss of mass | Video |

· AQA Required Practical – Measuring the rate of a reaction by collecting gas | Video |

· PAG 1.1 – Determination of the composition copper (II) carbonate basic | Quiz |

· PAG 1.2 – Determination of the relative atomic mass of magnesium | Quiz |

· PAG 1.3 – Determination of the formula for magnesium oxide | Quiz |

Acids

· Salt equations | Video 1 | Video 2 | Quiz |

· PAG 2.1 – Determination of the concentration of hydrochloric acid | Quiz |

· PAG 2.2 – Determination of the molar mass of an acid | Quiz |

· PAG 2.3 – Identification of an unknown carbonate | Quiz |

· Water crystallisation | Quiz |

Redox

· Redox reactions | Video 1 | Video 2 | Quiz |

Electronic structure

· Electronic configuration | Video 1 | Video 2 | Quiz |

Bonding and structure

· Bond polarity | Video 1 | Video 2 | Quiz |

· Van der Waals’ forces | Video 1 | Video 2 | Quiz |

· Permanent Dipole-Dipole Interactions | Video | Quiz |

· Hydrogen bonds | Video 1 | Video 2 | Quiz |

Periodicity

· s, p, d or f block elements | Video | Quiz |

· Period 2 and 3 | Quiz |

Group 2

· Group 2 – the alkaline earth metals | Video | Quiz |

The Halogens

· Chlorine and chlorate | Video | Quiz |

Qualitative analysis

· PAG 4.1 – Identifying unknowns 1 | Video | Quiz |

· PAG 4.2 – Identifying unknowns 2 | Video | Quiz |

· PAG 4.3 – Identifying unknowns 3 | Video 1 | Video 2 | Quiz |

Physical chemistry

· Enthalpy change | Quiz |

· Calorimetry | Video 1 | Video 2 | Quiz |

· PAG 3.1 – Determination of the enthalpy change of neutralisation | Quiz |

· PAG 3.2 – Determination of an enthalpy change of reaction by Hess’ Law | Quiz |

· PAG 3.3 Determination of enthalpy changes of combustion | Quiz |

· Bond enthalpy | Video | Quiz |

· Hess’ Law | Quiz |

Reaction rates

· Effect of catalysts on reaction rate | Video | Quiz |

· Effect of pressure and concentration on reaction rate | Video | Quiz |

· Effect of temperature on reaction rate | Video | Quiz |

· Heterogeneous catalysts and homogeneous catalysts | Quiz |

· Maxwell-Boltzmann distribution | Video | Quiz |

Chemical equilibrium

· Le Chatelier’s principle and dynamic equilibrium | Video | Quiz |

· Kc | Quiz |

Basic concepts and hydrocarbons

· Introduction to organic chemistry | Quiz |

· Types of formula | Video 1 | Video 2 | Quiz |

· Skeletal formula | Video | Quiz |

· Structural isomerism | Video | Quiz |

· Reaction mechanisms | Video 1 | Video 2 | Quiz |

Alkanes

· Naming alkanes | Video | Quiz |

· Combustion of alkanes | Video | Quiz |

· Halogenation of alkanes | Quiz |

Alkenes

· Bonding and reactivity | Video 1 | Video 2 | Quiz |

· Stereoisomerism | Video | Quiz |

· E/Z isomerism | Video | Quiz |

· Cahn-Ingold-Prelog priority rules | Video | Quiz |

· Addition reactions of alkenes | Video | Quiz |

· Addition polymers | Video | Quiz |

· Disposal of polymers | Quiz |

Alcohols

· Alcohols | Video | Quiz |

· Oxidation of alcohols | Video 1 | Video 2 | Quiz |

· Reactions with alcohols | Quiz |

Haloalkanes

· Nucleophilic substitution | Video | Quiz |

· Elimination reactions | Quiz |

· Depletion of ozone | Video | Quiz |

Organic synthesis

· PAG 5.1 – Synthesis of a haloalkane | Video | Quiz |

· PAG 5.2 – Preparation of cyclohexene | Quiz |

· PAG 5.3 – Oxidation of ethanol | Video | Quiz |

· PAG 6.1 – Synthesis of aspirin | Quiz |

· PAG 6.2 – Preparation of benzoic acid | Quiz |

· PAG 6.3 – Preparation of methyl 3-nitrobenzoate | Video | Quiz |

Analytical techniques

· Infrared spectroscopy | Quiz |

· Time of flight mass spectrometer | Quiz |

Rates of reaction

· Orders of reactions and rate equations | Quiz |

· Determination of rate equation | Video | Quiz |

· The Arrhenius equation | Quiz |

· PAG 9.1 – The rate of decomposition of hydrogen peroxide | Quiz |

· PAG 9.2 – The rate of reaction of calcium carbonate and hydrochloric acid | Quiz |

· PAG 9.3 – The rate of reaction of magnesium and hydrochloric acid | Quiz |

· PAG 10.2 – Rates – Thiosulfate and acid | Quiz |

· PAG 10.3 – Rates – Activation energy | Quiz |

· PAG 10.1 – Rates – Iodine clock | Quiz |

Equilibrium

· Equilibrium constant Kp for homogeneous systems | Quiz |

Acids, bases and buffers

· Brønsted–Lowry acid–base equilibria | Video 1 | Video 2 | Quiz |

· pH equations | Quiz |

· Calculate the pH of strong acids | Quiz |

· Calculate the pH of weak acids | Quiz |

· Kw to calculate the pH of strong bases | Quiz |

· Calculating the pH of buffer solutions | Quiz |

· pH curves | Video 1 | Video 2 | Quiz |

· PAG 11.1 – pH – problem solving | Quiz |

· PAG 11.2 – pH – titration curves | Quiz |

· PAG 11.3 – pH – acids and buffers | Video | Quiz |

Energy

· Born-Haber Cycles | Quiz |

Enthalpy and entropy

· Entropy change ΔS | Quiz |

· Gibbs free-energy change ΔS | Video | Quiz |

Redox and electrode potentials

· Redox reactions | Video 1 | Video 2 |

· Redox titrations | Video 1 | Video 2 | Quiz |

· Electrode potentials and cells | Quiz |

· Electrochemical cells | Video 1 | Video 2 | Quiz |

· PAG 8.1 – Electrochemical cells 1 | Video | Quiz |

· PAG 8.2 – Electrochemical cells 2 | Video | Quiz |

· PAG 8.3 – Electrochemical cells 3 | Quiz |

Transition elements

· Transition metals | Video 1 | Video 2 | Quiz |

· Complex ions | Video | Quiz |

· Coloured complex ions | Video | Quiz |

· Shapes of complex ions | Quiz |

· Ligand exchange | Quiz |

· Variable oxidation states of transition metals | Video 1 | Video 2 | Quiz |

Aromatic compounds

· Benzene | Video 1 | Video 2 | Quiz |

· Nitration reactions | Quiz |

· Friedel-Crafts acylation reactions | Quiz |

· Phenols | Video | Quiz |

Carbonyl compounds

· Aldehydes | Video 1 | Video 2 | Quiz |

· Ketones | Quiz |

· Carbonyl compounds | Quiz |

Carboxylic acids and esters

· Carboxylic acids | Video 1 | Video 2 | Quiz |

· Acid anhydrides | Quiz |

· Acyl chlorides | Quiz |

Amines

· Aliphatic amines | Video | Quiz |

· Aromatic amines | Quiz |

· Amines as bases | Quiz |

· Preparing amines | Quiz |

Amino acids, amides and chirality

· Amino acids | Video | Quiz |

· Amides | Video | Quiz |

· Optical isomerism | Video 1 | Video 2 | Quiz |

Polyesters and polyamides

· Condensation polymerization | Video | Quiz |

Carbon-carbon bond formation

· Extending carbon chain length | Quiz |

Testing for organic functional groups

· Testing for organic functional groups | Video 1 | Video 2 | Quiz |

· PAG 7.1 – Identifying organic unknowns 1 | Video | Quiz |

· PAG 7.2 – Identifying organic unknowns 2 | Video | Quiz |

· PAG 7.3 – Identifying organic unknowns 3 | Video | Quiz |

Organic analysis

· Organic synthesis pathways | Video | Quiz |

Chromatography

· Chromatography | Quiz |

Spectroscopy

· C NMR | Video | Quiz |

· H NMR | Video | Quiz |

· PAG 12.1 – Investigating iron tablets | Quiz |

· PAG 12.2 – Investigating the copper content of brass screws | Quiz |

· PAG 12.3 – Investigating the reaction between potassium manganate (VII) and ethanedioic acid | Quiz |

AS-Level

Paper 1 is Breadth in chemistry
Paper 2 is Depth in Chemistry

Paper 1 and paper 2 are both a total of 70 marks, each makes up 50% of the AS grade. On paper 1 section A is 20 multiple choice questions and section B is short answer and extended response questions.

A-Level

Paper 1 is Periodic table, elements and physical chemistry
Paper 2 is Synthesis and analytical techniques
Paper 3 is Unified Chemistry

Paper 1 and paper 2 are both a total of 100 marks, each paper makes up 37% of the A-level grade. Section A is 15 multiple choice questions and section B is short answer and extended response questions.

Paper 3 is worth 70 marks making up 26% of the A-level. There are range of question styles including short answer, calculations and extended response.

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A-Level Chemistry Predicted Papers

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