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OCR A-level Chemistry

OCR Chemistry A (H432)26 topics235 lessons

OCR A-level Chemistry revision for OCR Chemistry A (H432): 26 topics and 235 short lessons, each with R.E.C.I.P.E. recall steps and a quiz. The topics follow the OCR specification.

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1. Rate of Reaction

11 lessonsSpec 5.1.1

  1. The Rate of a Reaction
  2. Measuring Reaction Rates
  3. Experimental Determination of the Rate of Reaction
  4. The Rate Equation
  5. The Order of a Reaction
  6. The Rate Constant k
  7. Worked Example
  8. Half-Lives and Reaction Rate Graphs
  9. The Rate Determining Step
  10. Catalysts
  11. The Effect of Temperature and Catalysts on the Rate Constant.

2. Equilibria

6 lessonsSpec 5.1.2

  1. Dynamic Equilibria
  2. Homogenous and Heterogenous Equilibria and Kc
  3. Finding the Value of Kc
  4. The Effect of Temperature on Kc
  5. Catalysts and Kc
  6. Partial Pressures and Kp

3. Acids, Bases and Buffers

15 lessonsSpec 5.1.3

  1. Acids and Bases
  2. Conjugate Acid-Base Pairs
  3. Strong and Weak Acids and Bases
  4. The Acid Dissociation Constant Ka
  5. pH
  6. Calculating the pH of a Strong Acid
  7. Calculating the pH of a Weak Acid
  8. The Ionic Product of Water Kw
  9. Calculating the pH of a Strong Base
  10. Buffer Solutions
  11. pH of a Buffer Solution
  12. Controlling the pH of Blood
  13. Titration Curves
  14. Acid-Base Indicators
  15. Standard Enthalpy of Neutralisation

4. Lattice Enthalpy

10 lessonsSpec 5.2.1

  1. The Standard Enthalpy Change of Formation
  2. The Standard Enthalpy Change of Atomisation
  3. First Ionisation Energy
  4. First Electron Affinity
  5. Lattice Enthalpy
  6. Born-Haber Cycles
  7. Born-Haber Cycle for Sodium Oxide
  8. Born-Haber Cycle for Calcium Chloride
  9. Enthalpy Change of Hydration
  10. Enthalpy Change of Solution

5. Entropy

6 lessonsSpec 5.2.2

  1. Entropy
  2. The Second Law of Thermodynamics
  3. The Entropy Change of a System
  4. The Effect of Temperature on Entropy
  5. The Entropy Change of the Surroundings
  6. Spontaneous Reactions and Gibbs Free Energy

6. Electrochemistry

14 lessonsSpec 5.2.3

  1. Oxidation and Reduction
  2. Ionic Equations
  3. Electrochemical Half Cells
  4. Electrochemical Cells
  5. The Standard Hydrogen Half Cell
  6. Standard Electrode Potential Eθ and the Electrochemical Series
  7. Calomel Electrode
  8. Standard Cell Potentials Eθcell Values and Electrochemical Cells
  9. Non-Standard Conditions
  10. Cell Diagrams
  11. Thermodynamic Feasibility of a Reaction and the Extent of a Reaction
  12. Electrochemical Cells
  13. Rechargeable Batteries
  14. Alkaline Fuel Cells

7. Transition Metals

21 lessonsSpec 5.3.1, 5.3.2

  1. Transition Metals
  2. Properties of Transition Metals
  3. Complex Ions
  4. Shapes of complex ions
  5. Isomerism
  6. Formation of Coloured Ions
  7. Spectroscopy
  8. Ligand Substitution Reactions
  9. Vanadium
  10. Tollens Reagent
  11. Redox Potential
  12. Redox Titrations
  13. Heterogeneous Catalysts
  14. Homogeneous Catalysts
  15. Autocatalysis
  16. Hydration of Metal Ions
  17. Reaction with Ammonia Solution
  18. Reaction with Sodium Hydroxide
  19. Reaction with Sodium Carbonate
  20. Test for Transition Metal Ions
  21. Questions

8. Carbon

4 lessons

  1. Carbon
  2. Hydrocarbons
  3. Saturated Hydrocarbons
  4. Unsaturated Hydrocarbons

9. Formulae

5 lessons

  1. Functional Group
  2. Homologous Series
  3. General Formula
  4. Types of Formulae
  5. Empirical and Molecular Formula

10. Naming and Isomerism

5 lessons

  1. IUPAC Nomenclature
  2. Types of Isomerism
  3. Structural Isomerism
  4. Stereoisomerism
  5. Optical Isomers

11. Bond breaking

3 lessons

  1. Homolytic Fission
  2. Heterolytic Fission
  3. Reaction Mechanisms

12. Reactions and Reactive Species

20 lessons

  1. Free radicals
  2. Nucleophiles
  3. Electrophiles
  4. Acids
  5. Bases
  6. Oxidising Agents
  7. Reducing Agents
  8. Substitution
  9. Addition
  10. Elimination
  11. Addition-Elimination
  12. Acid-Base Reactions
  13. Oxidation
  14. Reduction
  15. Combustion
  16. Cracking
  17. Reforming
  18. Condensation
  19. Hydrolysis
  20. Polymerisation

13. Alkanes

8 lessons

  1. Crude Oil
  2. Cracking and Reforming
  3. Complete Combustion
  4. Incomplete Combustion
  5. Oxides of Sulfur and Nitrogen
  6. Catalytic Converters
  7. Alternative Fuels
  8. Free Radical Substitution

14. Alkenes

11 lessons

  1. Alkenes
  2. Bonding in Alkenes
  3. Stereoisomerism in Alkenes
  4. Reactions of Alkenes
  5. Hydrogenation
  6. Reaction with Halogens
  7. Reaction with Hydrogen Halides
  8. Reaction with Steam
  9. Oxidation of Alkenes to Diols
  10. Addition Polymerisation
  11. Environmental Concerns

15. Alcohols

7 lessons

  1. Alcohols
  2. Physical Properties
  3. Classifying Alcohols
  4. Combustion and use as Fuels
  5. Oxidation
  6. Dehydration of Alcohols
  7. Nucleophilic Substitution Reactions

16. Halogenolkanes

6 lessons

  1. Halogenoalkanes
  2. Reactivity of Halogenoalkanes
  3. Nucleophilic Substitution - Hydrolysis
  4. Reaction with Ammonia
  5. Elimination
  6. Organohalogen compounds and the Environment

17. Benzene

16 lessons

  1. Benzene
  2. Benzene Structure
  3. Electrophilic Substitution Reactions
  4. Nitration of Benzene
  5. Halogenation of Benzene
  6. Phenol
  7. Halogen Carriers
  8. Friedel-Crafts Alkylation
  9. Friedel-Crafts Acylation
  10. Reactivity of Phenol
  11. Phenol as a Weak Acid
  12. Bromination of Phenol
  13. Nitration of Phenol
  14. Directing Effects in Aromatic Substitution
  15. 2- and 4-Directing Groups
  16. 3-Directing Groups

18. Carbonyl Compounds

12 lessons

  1. Carbonyl Compounds
  2. Preparation of Aldehydes and Ketones
  3. Reduction of Aldehydes and Ketones
  4. Reaction with Hydrogen Cyanide
  5. Silver Mirror Test
  6. 2,4-DNP Test for Carbonyl Compounds
  7. Carboxylic Acids
  8. Esters
  9. Fats and Oils
  10. Health
  11. Acyl Chlorides
  12. Biodiesel

19. Nitrogen Compounds

7 lessons

  1. Amines
  2. Properties of Amines
  3. Basicity of Amines
  4. Synthesis of Amines
  5. Reactions of Amines as Bases
  6. Reactions of Amines as Nucleophiles
  7. Economic Importance of Amines

20. Amino Acids

5 lessons

  1. Amino-Acids
  2. Zwitterions
  3. Polypeptides
  4. Proteins
  5. Optical Isomerism

21. DNA

1 lessons

  1. DNA

22. Polymers

3 lessons

  1. Addition and Condensation Polymerisation
  2. Polyesters
  3. Polyamides

23. Carbon-Carbon Bond Formation

8 lessons

  1. Carbon-Carbon Bond Formation
  2. Nitriles from Haloalkanes
  3. Hydroxynitriles from Carbonyls
  4. Reduction of Nitriles to Amines
  5. Hydrolysis of Nitriles to Carboxylic Acids
  6. Extending Carbon Chains on Benzene
  7. Amides
  8. Naming Amides

24. Organic Synthesis

9 lessons

  1. Practical Techniques in Organic Synthesis
  2. Quickfit Apparatus
  3. Filtration under Reduced Pressure
  4. Recrystallisation
  5. Melting Point Determination
  6. Identifying Functional Groups
  7. Aliphatic Synthetic Routes
  8. Aromatic Synthetic Routes
  9. Planning Multi-Stage Syntheses

25. Chromatography and Qualitative Analysis

10 lessons

  1. Chromatography
  2. Thin-Layer Chromatography
  3. Rf Values
  4. Gas Chromatography
  5. Retention Times and Peak Areas
  6. Qualitative Tests for Alkenes
  7. Qualitative Tests for Haloalkanes
  8. Qualitative Tests for Phenols
  9. Qualitative Tests for Carbonyls
  10. Qualitative Tests for Carboxylic Acids

26. NMR Spectroscopy

12 lessons

  1. Nuclear Magnetic Resonance
  2. Chemical Shift
  3. The TMS Standard
  4. Deuterated Solvents
  5. 13C NMR Spectroscopy
  6. Interpreting 13C NMR Spectra
  7. 1H NMR Spectroscopy
  8. Relative Peak Areas
  9. Spin-Spin Splitting
  10. The n+1 Rule
  11. Identifying O-H and N-H Protons with D2O
  12. Combining Techniques to Deduce Structures