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AQA A-level Chemistry

AQA Chemistry (7405)18 topics192 lessons

Free AQA A-level Chemistry revision for AQA Chemistry (7405): 18 topics and 192 short lessons, each with R.E.C.I.P.E. recall steps and a quiz. The topics follow the AQA specification.

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1. Rate of Reaction

11 lessons

  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 lessons

  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 lessons

  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 lessons

  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 lessons

  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 lessons

  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 lessons

  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. Heterogenous 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. Period 3 Elements and Oxides

10 lessons

  1. Period 3 Elements
  2. Reactions of Sodium and Magnesium with Water
  3. Reactions of Period 3 Elements with Oxygen
  4. Period 3 Oxides
  5. Melting Points of Period 3 Oxides
  6. Reactions of Period 3 Oxides with Water
  7. pH of Period 3 Oxide Solutions
  8. Acid-Base Character of Period 3 Oxides
  9. Amphoteric Aluminium Oxide
  10. Equations for Period 3 Oxides with Acids and Bases

9. Optical Isomerism

6 lessons

  1. Chirality
  2. Optical Isomers
  3. Plane-Polarised Light
  4. Racemic Mixtures
  5. Racemates from Nucleophilic Addition
  6. Identifying Chiral Centres

10. Aldehydes and Ketones

9 lessons

  1. Aldehydes and Ketones
  2. Naming Carbonyl Compounds
  3. Oxidation of Aldehydes
  4. Tollens' Reagent
  5. Fehling's Solution
  6. Reduction with NaBH4
  7. Nucleophilic Addition Mechanism
  8. Reaction with KCN and Hydroxynitriles
  9. Hazards of KCN

11. Carboxylic Acids and Derivatives

16 lessons

  1. Carboxylic Acids
  2. Naming Carboxylic Acids
  3. Carboxylic Acids as Weak Acids
  4. Reaction with Carbonates
  5. Esterification
  6. Naming Esters
  7. Uses of Esters
  8. Hydrolysis of Esters
  9. Vegetable Oils and Fats
  10. Soap Making
  11. Biodiesel
  12. Acyl Chlorides
  13. Acid Anhydrides
  14. Nucleophilic Addition-Elimination Mechanism
  15. Acylation of Water, Alcohols, Ammonia and Amines
  16. Manufacture of Aspirin

12. Aromatic Chemistry

11 lessons

  1. Benzene
  2. The Kekulé Model
  3. The Delocalised Model of Benzene
  4. Evidence for Delocalisation - Enthalpy of Hydrogenation
  5. Naming Aromatic Compounds
  6. Electrophilic Substitution
  7. Nitration of Benzene
  8. Mechanism of Nitration
  9. Uses of Nitration
  10. Friedel-Crafts Acylation
  11. Mechanism of Friedel-Crafts Acylation

13. Amines

10 lessons

  1. Amines
  2. Naming Amines
  3. Amines as Bases
  4. Relative Base Strength of Amines
  5. Preparing Primary Aliphatic Amines
  6. Reduction of Nitriles
  7. Preparing Aromatic Amines
  8. Amines as Nucleophiles
  9. Quaternary Ammonium Salts
  10. Cationic Surfactants

14. Condensation Polymers

8 lessons

  1. Condensation Polymers
  2. Polyesters
  3. Polyamides
  4. Nylon-6,6 and Kevlar
  5. Drawing Repeat Units
  6. Hydrogen Bonding between Polymer Chains
  7. Biodegradability of Polymers
  8. Disposal and Recycling of Polymers

15. Amino Acids, Proteins and DNA

15 lessons

  1. Amino Acids
  2. Zwitterions
  3. Acid-Base Properties of Amino Acids
  4. Peptide Links
  5. Hydrolysis of Proteins
  6. Primary Structure of Proteins
  7. Secondary Structure of Proteins
  8. Tertiary Structure of Proteins
  9. Enzymes and Stereospecific Active Sites
  10. Drug Action and Enzyme Inhibitors
  11. Structure of DNA Nucleotides
  12. Hydrogen Bonding between DNA Bases
  13. Cisplatin
  14. How Cisplatin Prevents DNA Replication
  15. Side Effects of Cisplatin

16. Organic Synthesis

6 lessons

  1. Organic Synthesis
  2. Synthetic Routes - Aliphatic Compounds
  3. Synthetic Routes - Aromatic Compounds
  4. Reaction Conditions and Reagents
  5. Designing Multi-Step Syntheses
  6. Reducing Steps and Hazardous Solvents

17. NMR Spectroscopy

11 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. Integration Traces
  9. Spin-Spin Splitting
  10. The n+1 Rule
  11. Interpreting 1H NMR Spectra

18. Chromatography

7 lessons

  1. Chromatography
  2. Thin-Layer Chromatography
  3. Rf Values
  4. Column Chromatography
  5. Gas Chromatography
  6. Retention Times
  7. Combining Chromatography with Mass Spectrometry