BRAINCAKE

AQA AS-level Chemistry

AQA Chemistry (7404)16 topics297 lessons

AQA AS-level Chemistry revision for AQA Chemistry (7404): 16 topics and 297 short lessons, each with R.E.C.I.P.E. recall steps and a quiz. The topics follow the AQA specification.

Subscribe

1. Atomic Structure

22 lessonsSpec 3.1.1.1, 3.1.1.2, 3.1.1.3

  1. Discovery of the Atom
  2. Structure of the Atom
  3. Relative Mass and Relative Charge
  4. Atomic Number and Mass Number
  5. Isotopes
  6. Isotopes of Carbon
  7. Electrons
  8. Electron Shells
  9. The Mass Spectrometer
  10. Time of Flight Mass Spectrometer
  11. Mass Spectra of Elements
  12. Low Resolution Mass Spectrometry
  13. Mass Spectrometer in Space
  14. Quantum Mechanics
  15. Energy Levels
  16. Atomic Orbitals
  17. Order of filling orbitals
  18. Electron Configuration
  19. First Ionisation Energy
  20. Successive Ionisation Energies
  21. Trends in First Ionisation Energy Across a Period
  22. Trends in Ionisation Energy Down A Group

2. Amount of Substance

33 lessonsSpec 3.1.2.1, 3.1.2.2, 3.1.2.3, 3.1.2.4, 3.1.2.5

  1. Relative Atomic Mass
  2. Relative Molecular Mass
  3. Relative Formula Mass
  4. The Mole and The Avogadro Constant
  5. Calculating the Number of Moles
  6. Example Question - 1
  7. Example Question - 2
  8. Mass Concentration
  9. Example Question - 1
  10. Example Question - 2
  11. Molar Concentrations
  12. Example Question - 1
  13. Example Question - 2
  14. The Ideal Gas Equation
  15. Finding the Number of Moles of Gas
  16. Finding the Relative Molecular Mass of a Gas
  17. Example Question - 1
  18. Example Question - 2
  19. Empirical Formula
  20. Example Question - 1
  21. Example Question - 2
  22. Molecular Formula
  23. Combustion Analysis
  24. Example Question - 1
  25. Example Question - 2
  26. Balancing Equations
  27. Ionic Equations
  28. Titrations
  29. Titration Calculations
  30. Example Question - 1
  31. Example Question - 2
  32. Atom Economy
  33. Percentage Yield

3. Bonding

30 lessonsSpec 3.1.3.1, 3.1.3.2, 3.1.3.3, 3.1.3.4, 3.1.3.5, 3.1.3.6, 3.1.3.7

  1. Ionic Bonding
  2. Sodium Chloride
  3. Magnesium Oxide
  4. Ionic Lattices
  5. Properties of Ionic Compounds
  6. Covalent bonds and Small Molecules
  7. Single and Double Covalent Bonds
  8. Co-ordinate Bonding
  9. Metallic Bonding
  10. Properties of Metals
  11. Electronegativity
  12. Trends in Electronegativity
  13. Polar Covalent Bonds
  14. Dipole-Dipole Forces
  15. Van der Waals forces
  16. Hydrogen Bonding
  17. Boiling Point of Hydrides
  18. The Importance of Hydrogen Bonding
  19. Electron Pair Repulsion Theory
  20. Two Pairs of Electrons
  21. Three Pairs of Electrons
  22. Four Pairs of Electrons
  23. Five Pairs of Electrons
  24. Six Pairs of Electrons
  25. Bonding-Pair Lone-Pair Repulsion
  26. Heating a Solid, Liquid or Gas
  27. Crystals
  28. Diamond
  29. Graphite and Graphene
  30. Fullerenes

4. Energetics

24 lessonsSpec 3.1.4.1, 3.1.4.2, 3.1.4.3, 3.1.4.4

  1. Endothermic and Exothermic Reactions
  2. Enthalpy Change ΔH
  3. Physical States of Reactants and Products
  4. Enthalpy Level Diagrams
  5. Standard Enthalpies
  6. Measuring the Enthalpy Change of A Reaction
  7. Simple Calorimeter
  8. Flame Calorimeter
  9. Neutralisation Reactions
  10. Displacement Reactions
  11. Allowing for Heat Loss
  12. Hess's Law and Thermochemical Cycles
  13. The Enthalpy Change of Formation
  14. The Enthalpy Change of Combustion
  15. Thermochemical Cycles and Enthalpy Diagrams
  16. Bond Enthalpies
  17. Using Mean Bond Enthalpies to Calculate Enthalpy Change
  18. Comparison with Thermochemical Cycles
  19. Example Question - 1
  20. Example Question - 2
  21. Example Question - 3
  22. Example Question - 4
  23. Example Question - 5
  24. Example Question - 6

5. Kinetics

14 lessonsSpec 3.1.5.1, 3.1.5.2, 3.1.5.3, 3.1.5.4, 3.1.5.5

  1. Collision Theory
  2. Factors Affecting Rate of Reaction
  3. Activation Energy
  4. Exothermic Reactions
  5. Endothermic Reactions
  6. Maxwell-Boltzmann Distribution
  7. Maxwell-Boltzmann Distribution and Activation Energy
  8. The Effect of Temperature on Reaction Rate
  9. Catalysts
  10. Catalytic Converters
  11. Exam Style Question - 1
  12. Exam Style Question - 2
  13. Exam Style Question - 3
  14. Exam Style Question - 4

6. Equilibria

20 lessonsSpec 3.1.6.1, 3.1.6.2

  1. Dynamic Equilibrium
  2. Chemical Equilibria
  3. Le Chatelier's Principle
  4. Changing Concentrations
  5. Changing Pressure
  6. Changing Temperature
  7. Catalysts
  8. Equilibrium Reactions in Industry
  9. Ammonia
  10. Ethanol
  11. Methanol
  12. The Equilibrium Constant Kc
  13. Finding the Value of Kc
  14. Example Question - 1
  15. Example Question - 2
  16. Example Question - 3
  17. The Effect of Changing Temperature on Kc
  18. The Effect of Changing Concentration on the Position of Equilibrium
  19. Kc and the Position of Equilibrium
  20. Catalysts

7. Oxidation and Reduction

15 lessonsSpec 3.1.7

  1. Oxidation and Reduction
  2. Ionic Half Equations
  3. Oxidising and Reducing Agents
  4. Oxidation State
  5. Rules for Oxidation State
  6. Working Out Oxidation States
  7. Superoxide
  8. Redox Equations
  9. Redox Reactions in Aqueous Solutions
  10. Thermite Reaction
  11. Half Equations from Ionic Equations
  12. Exam Style Question - 1
  13. Exam Style Question - 2
  14. Exam Style Question - 3
  15. Exam Style Question - 5

8. Periodicity

14 lessonsSpec 3.2.1.1, 3.2.1.2

  1. The Periodic Table
  2. Metals and Non-Metals
  3. s, p, d and f Block
  4. Groups
  5. Periods
  6. Reactivity
  7. Hydrogen and Helium
  8. Periodicity and Period 3 Elements
  9. Trends in Melting and Boiling Points
  10. Atomic Radii
  11. First Ionisation Energy
  12. Group 2 and 3
  13. Group 5 and 6
  14. Successive Ionisation Energies

9. Group 2

7 lessonsSpec 3.2.2

  1. Group 2 Elements
  2. Physical Properties
  3. Ionisation Energies
  4. Calcium
  5. Reaction with Water
  6. Solubility of Hydroxides
  7. Solubility of Sulfates

10. Group 7

20 lessonsSpec 3.2.3.1, 3.2.3.2

  1. Halogens
  2. Physical Properties
  3. Size of Atoms
  4. Electronegativity
  5. Melting and Boiling Points
  6. Trends in Oxidising Ability
  7. Displacement Reactions
  8. Halide Ions as Reducing Agents
  9. Sodium Chloride with Sulfuric Acid
  10. Sodium Bromide with Sulfuric Acid
  11. Sodium Iodide with Sulfuric Acid
  12. Reaction with Water
  13. Reaction with Alkali
  14. Example Question - 1
  15. Example Question - 2
  16. Example Question - 3
  17. Silver Nitrate Test for Halide Ions
  18. Colours of Silver Halide Precipitates
  19. Distinguishing Silver Halides with Ammonia
  20. Why Nitric Acid is Added First

11. Organic Chemistry

17 lessonsSpec 3.3.1.1, 3.3.1.2, 3.3.1.3

  1. Carbon
  2. Empirical Formula
  3. Molecular Formula
  4. Displayed Formula
  5. Structural Formula
  6. Skeletal FOrmula
  7. Bond Breaking
  8. Nomenclature
  9. Functional Groups
  10. Homologous Series
  11. Structural Isomerism
  12. Stereoisomerism
  13. Exam Style Question - 1
  14. Exam Style Question - 2
  15. Exam Style Question - 3
  16. Exam Style Question - 4
  17. Exam Style Question - 5

12. Alkanes

20 lessonsSpec 3.3.2.1, 3.3.2.2, 3.3.2.3, 3.3.2.4

  1. General Formula
  2. Straight Chains
  3. Branched Chains
  4. Cyclic Alkanes
  5. Naming Alkanes
  6. Structural Isomers
  7. Physical Properties
  8. Fractional Distillation of Crude Oil
  9. Fracking
  10. Thermal Cracking
  11. catalytic Cracking
  12. Combustion
  13. Polluting the Atmosphere
  14. Flue Gas Desulfurisation
  15. Catalytic Converters
  16. Greenhouse Effect
  17. Carbon Neutral Activities
  18. Free-Radical Substitution
  19. Further Substitution
  20. Ozone Layer

13. Halogenoalkanes

16 lessonsSpec 3.3.3.1, 3.3.3.2, 3.3.3.3

  1. General Formula
  2. Naming Halogenoalkanes
  3. Bond Polarity
  4. Physical Properties
  5. Reactivity of the Carbon-Halogen Bond
  6. Nucleophiles
  7. Nucleophilic Substitution
  8. Reaction with Aqueous Sodium Hydroxide
  9. Reaction with Cyanide Ions
  10. Reaction with Ammonia
  11. Uses of Nucleophilic Substitution
  12. Elimination Reaction
  13. Mechanism of Elimination
  14. Conditions for Substitution vs Elimination
  15. Classification of Halogenoalkanes
  16. Chlorofluorocarbons and the Environment

14. Alkenes

23 lessonsSpec 3.3.4.1, 3.3.4.2, 3.3.4.3

  1. General Formula
  2. Naming Alkenes
  3. Bonding
  4. Position Isomerism
  5. Geometric Isomerism
  6. Nomenclature (Cahn-Ingold-Prelog)
  7. Physical Properties of Alkenes
  8. Combustion
  9. Electrophiles
  10. Electrophilic Addition
  11. Reaction with Halogens
  12. Reaction with Hydrogen Halides
  13. Asymmetrical Alkenes
  14. Bromine Water Test for Alkenes
  15. Reaction with Concentrated Sulfuric Acid
  16. Asymmetrical Alkenes
  17. Reaction with Water
  18. Addition Polymers
  19. Identifying the Repeating Group
  20. Identifying the Monomer
  21. Low and High Density Polythene
  22. Biodegradability
  23. Solutions to Plastic Pollution

15. Alcohols

13 lessonsSpec 3.3.5.1, 3.3.5.2, 3.3.5.3

  1. Alcohols
  2. Naming Alcohols
  3. Primary, Secondary and Tertiary Alcohols
  4. Ethanol by Fermentation
  5. Ethanol by Hydration of Ethene
  6. Biofuels and Carbon Neutrality
  7. Oxidation of Alcohols
  8. Oxidation of Primary Alcohols to Aldehydes and Carboxylic Acids
  9. Oxidation of Secondary Alcohols
  10. Distinguishing Aldehydes and Ketones
  11. Dehydration of Alcohols
  12. Mechanism of Dehydration
  13. Reflux and Distillation

16. Organic Analysis

9 lessonsSpec 3.3.6.1, 3.3.6.2, 3.3.6.3

  1. Identifying Functional Groups
  2. Test Tube Tests for Organic Compounds
  3. High Resolution Mass Spectrometry
  4. Precise Relative Molecular Mass
  5. Infrared Spectroscopy
  6. Bond Vibrations and IR Absorption
  7. The Fingerprint Region
  8. Interpreting IR Spectra
  9. Infrared Radiation and the Greenhouse Effect