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A-level Chemistry Year 12 · Edexcel

Edexcel A-level Chemistry Year 12 revision

Every topic of the Edexcel A-level Chemistry (9CH0) specification (Year 12) in order, with notes and practice questions. Subtopics marked free have their notes and questions on this site.

Topic 1: Atomic structure and the periodic table

It builds on what you learned at GCSE in Key concepts in chemistry, and takes it further.

There are 3 parts: we start with atomic structure, and finish with periodicity.

  1. 1.1Atomic structureFree 55 questions
  2. 1.2Development of models of the atom and evidence for atomic structure60 questions
  3. 1.3PeriodicityFree 17 questions

Topic 2: Bonding and structure

It builds on what you learned at GCSE in Key concepts in chemistry, and takes it further.

There are 3 parts: we start with ionic and metallic bonding, and how structure affects physical properties, and finish with geometry.

  1. 2.1Ionic and metallic bonding, and how structure affects physical properties23 questions
  2. 2.2BondingFree 38 questions
  3. 2.3Geometry: bond angles, 3D molecular shapes and drawing molecules66 questions

Topic 3: Redox I

It builds on what you learned at GCSE in Chemical changes, and takes it further.

We will go through it step by step.

  1. 3.1Oxidation, reduction and redox equations54 questions

Topic 4: Inorganic chemistry and the periodic table

It builds on what you learned at GCSE in Groups in the periodic table and Separate chemistry 2, and takes it further.

There are 4 parts: we start with group 2, the alkaline earth metals, and finish with qualitative analysis.

  1. 4.1Group 2, the alkaline earth metals29 questions
  2. 4.2Thermal decomposition of Group 1 and Group 2 carbonates and nitrates69 questions
  3. 4.3Group 7, the halogens13 questions
  4. 4.4Qualitative analysis: flame tests and tests for carbonate, sulfate, halide, hydroxide and ammonium ions71 questions

Topic 5: Formulae, equations and amounts of substance

It builds on what you learned at GCSE in Key concepts in chemistry and Separate chemistry 1, and takes it further.

There are 7 parts: we start with writing formulae of ions and compounds, balanced equations, state symbols and ionic equations, and finish with the practical on measuring the molar volume of a gas and determining moles from reacting masses.

  1. 5.1Writing formulae of ions and compounds, balanced equations, state symbols and ionic equations45 questions
  2. 5.2Amount of substance61 questions
  3. 5.3Molar gas volume and gas volume calculations62 questions
  4. 5.4Hydrated salts, water of crystallisation and percentage composition70 questions
  5. 5.5Acids, bases, salts and neutralisation63 questions
  6. 5.6Practical: preparing a standard solution and carrying out an acid-base titrationFree 67 questions
  7. 5.7Practical: measuring the molar volume of a gas and determining moles from reacting masses66 questions

Topic 6: Organic chemistry I

It builds on what you learned at GCSE in Fuels and Earth science and Separate chemistry 2, and takes it further.

There are 10 parts: we start with introduction to organic chemistry, and finish with organic synthesis.

  1. 6.1Introduction to organic chemistryFree 26 questions
  2. 6.2Crude oil, fractional distillation, fuels and pollution from combustion20 questions
  3. 6.3Alkanes30 questions
  4. 6.4AlkenesFree 25 questions
  5. 6.5Halogenoalkanes32 questions
  6. 6.6Ozone depletion by CFCs and radical chain reactions in the atmosphere30 questions
  7. 6.7Alcohols25 questions
  8. 6.8Practical: preparing an organic liquid by heating under reflux and distillation (e.g. oxidation of an alcohol)62 questions
  9. 6.9Practical: purifying an organic liquid using a separating funnel, drying agent and redistillation34 questions
  10. 6.10Organic synthesis: reaction pathways and multi-step routes between functional groups21 questions

Topic 7: Modern analytical techniques I

It builds on what you learned at GCSE in Separate chemistry 2, and takes it further.

There are 2 parts: we start with organic analysis, and finish with infrared absorption, bond vibrations and the greenhouse effect.

  1. 7.1Organic analysis59 questions
  2. 7.2Infrared absorption, bond vibrations and the greenhouse effect16 questions

Topic 8: Energetics I

It builds on what you learned at GCSE in Rates of reaction and energy changes, and takes it further.

There are 2 parts: we start with energetics, and finish with the practical on measuring enthalpy changes by calorimetry (neutralisation, displacement, solution and combustion).

  1. 8.1Energetics64 questions
  2. 8.2Practical: measuring enthalpy changes by calorimetry (neutralisation, displacement, solution and combustion)65 questions

Topic 9: Kinetics I

It builds on what you learned at GCSE in Rates of reaction and energy changes, and takes it further.

There are 2 parts: we start with kinetics, and finish with the practical on investigating rates of reaction by gas collection, clock reactions and continuous monitoring.

  1. 9.1Kinetics67 questions
  2. 9.2Practical: investigating rates of reaction by gas collection, clock reactions and continuous monitoring72 questions

Topic 10: Equilibrium I

It builds on what you learned at GCSE in Extracting metals and equilibria, and takes it further.

We will go through it step by step.

  1. 10.1Chemical equilibria and KcFree 27 questions

Topic S: Practical and maths skills

It builds on what you learned at GCSE in Practical and maths skills, and takes it further.

There are 10 parts: we start with planning investigations, and finish with graphs.

  1. S.1Planning investigations: variables, hypotheses and choosing apparatus and techniquesFree 39 questions
  2. S.2Safe working: hazards, risk assessment and environmental and ethical considerations30 questions
  3. S.3Using apparatus accurately: balances, burettes, pipettes, volumetric flasks, gas syringes and thermometers74 questions
  4. S.4Basic techniques: heating, filtration, drying and heating to constant mass74 questions
  5. S.5Measurement uncertainty, percentage error and improving precision33 questions
  6. S.6Recording, presenting and evaluating results: tables, graphs, anomalies and conclusions34 questions
  7. S.7Arithmetic: standard form, significant figures, unit conversions and estimationFree 16 questions
  8. S.8Ratios, fractions, percentages and proportionality in chemical calculations26 questions
  9. S.9Algebra: rearranging and substituting into equations (n = m/M, c = n/V, pV = nRT, Kc)40 questions
  10. S.10Graphs: plotting, line of best fit, gradients, tangents and intercepts34 questions

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