Chemistry
19
specification units
72
named subtopics
Year 12–Year 13
year groups
Pearson Edexcel A Level Chemistry is organised here into 19 specification units covering 72 named subtopics, studied across Year 12–Year 13. The units are Atomic Structure and the Periodic Table, Bonding and Structure, Redox I, Inorganic Chemistry and the Periodic Table, Formulae, Equations and Amounts of Substance, Organic Chemistry I, Modern Analytical Techniques I, Energetics I, Kinetics I, Equilibrium I, Equilibrium II, Acid-base Equilibria, Energetics II, Redox II, Transition Metals, Kinetics II, Organic Chemistry II, Organic Chemistry III and Modern Analytical Techniques II.
Each subtopic is tagged on the question bank, so you can practise one skill at a time, sit a full Edexcel A Level past paper, or build a mixed worksheet from several units at once. Answers are checked against the Pearson Edexcel A Level mark scheme, awarding method, accuracy and final-answer marks separately so you can see exactly where marks were lost.
Bonding and Structure is the widest unit on this specification with 6 subtopics, so it is usually the highest-value place to start revision.
Atomic Structure and the Periodic Table
- Atomic structure and subatomic particles
- Mass spectrometry and relative masses
- Electronic configuration and orbitals
- Ionisation energies
- Periodicity and the periodic table
Bonding and Structure
- Ionic bonding and lattices
- Covalent and dative bonding
- Metallic bonding
- Shapes of molecules and bond angles
- Electronegativity and polarity
- Intermolecular forces
Redox I
- Oxidation numbers
- Redox reactions and half-equations
- Disproportionation
Inorganic Chemistry and the Periodic Table
- Group 2 elements and compounds
- Group 7 halogens and reactions
- Tests for ions
Formulae, Equations and Amounts of Substance
- The mole and Avogadro constant
- Empirical and molecular formulae
- Reacting masses and gas volumes
- Concentrations and titrations
- Atom economy and percentage yield
Organic Chemistry I
- Introduction to organic chemistry and nomenclature
- Alkanes and free-radical substitution
- Alkenes and addition reactions
- Halogenoalkanes
- Alcohols
- Mechanisms and isomerism
Modern Analytical Techniques I
- Mass spectrometry of organic compounds
- Infrared spectroscopy
Energetics I
- Enthalpy changes and calorimetry
- Hess's law and enthalpy cycles
- Bond enthalpies
Kinetics I
- Collision theory and rate
- Maxwell-Boltzmann distribution
- Catalysts
Equilibrium I
- Dynamic equilibrium and Le Chatelier
- Equilibrium constant Kc
- Industrial processes
Acid-base Equilibria
- Bronsted-Lowry acids and bases
- pH and Ka calculations
- Buffers and titration curves
- Indicators
Energetics II
- Lattice energy and Born-Haber cycles
- Enthalpy and entropy changes
- Gibbs free energy and feasibility
Redox II
- Standard electrode potentials
- Electrochemical cells and EMF
- Redox titrations
- Fuel cells and storage cells
Transition Metals
- Electron configuration of transition metals
- Complex ions and ligands
- Colour and the spectrochemical series
- Catalysis
- Ligand substitution and stability
Kinetics II
- Rate equations and orders
- Rate-determining step
- Arrhenius equation
Organic Chemistry II
- Optical isomerism
- Aldehydes and ketones
- Carboxylic acids and derivatives
- Esters, acyl chlorides and amides
Organic Chemistry III
- Arenes and benzene
- Amines
- Amino acids and proteins
- Condensation polymers
- Organic synthesis routes
Modern Analytical Techniques II
- NMR spectroscopy
- Chromatography
- Combined spectroscopic analysis
How to revise Edexcel A Level Chemistry
- 1
Diagnose with one mixed set
Start with a mixed set drawn from all 19 units to find where Chemistry marks are actually being lost, rather than revising what already feels comfortable.
- 2
Drill unit by unit
Work through the subtopics in order, from Atomic Structure and the Periodic Table to Modern Analytical Techniques II, doing short focused sets rather than long unfocused sessions.
- 3
Sit a full past paper under timing
Once two or three units are solid, sit a complete Edexcel A Level Chemistry paper to timing and mark it against the official mark scheme.
- 4
Re-practise only the dropped marks
Convert every dropped mark into a targeted set on that subtopic, then re-test it a week later to check the fix stuck.
Continue with Chemistry
Every board and level we cover for this subject
A Level ChemistrySearchable formula sheet with worked micro-examples
Predicted papersPractice papers built from the topics that recur most
Past paper practiceSit whole papers online with examiner-grade marking
Other specifications for this subject
Chemistry — frequently asked questions
Everything students and parents ask about revising Edexcel A Level Chemistry.
The fastest route is past-paper-first revision: practise exam-style questions by topic, mark every answer against the real Pearson Edexcel A Level mark scheme, then drill the topics where you lose marks. On MathsGradeUp you can do all of this for Chemistry in one place — topic practice, full past papers and instant examiner-grade feedback.
Pearson Edexcel A Level Chemistry is mapped to the official specification and covers 19 units, including Atomic Structure and the Periodic Table, Bonding and Structure, Redox I, Inorganic Chemistry and the Periodic Table, Formulae, Equations and Amounts of Substance, Organic Chemistry I and more. Every unit is broken down into subtopics so you can target exactly what you need to revise.
Yes. You can open full Edexcel A Level Chemistry past papers, write directly on them with pen and maths tools, save your work, export a PDF, and submit for examiner-grade marking against the mark scheme.
Yes — our predicted papers for Chemistry are assembled from the topics that recur most in Pearson Edexcel A Level exams and the topics you have practised least. They are a revision aid built from the specification, not leaked content.
Each answer is checked against the real Pearson Edexcel A Level mark scheme, awarding method, accuracy and final-answer marks the way a real examiner would. You see exactly where marks were earned or dropped, with feedback you can act on.
Chemistry on the Pearson Edexcel A Level specification is aimed at Years 12–13. You can filter practice by year group and topic so the questions always match where you are in the course.
Yes. The Chemistry content follows the current Pearson Edexcel A Level specification, including all units and subtopics, so what you practise reflects what you will actually be examined on.
Yes — Chemistry practice, past papers and marking are free during our early launch period. Subscription plans may be introduced later, but launch users get full access now.
You do not just get an answer to copy. Chemistry marking guides you with hints, worked steps and mark-scheme-based feedback so you understand the method and pick up the marks yourself next time. Calculation-style questions are tagged so you can practise both structured and extended-response answers.
Yes. Parents and tutors can see completed Chemistry practice, accuracy, weak topics and overall exam readiness, making it easy to support revision and focus on the right areas.
Short, regular sessions beat occasional long ones. Aim for a few focused Chemistry sessions a week, always finishing by marking your work so each session ends with clear next steps. The progress dashboard shows what to revise next.