Pearson Edexcel A-level Chemistry questions by topic
Pearson Edexcel A-level Chemistry (9CH0) has three papers: Paper 1 concentrates on inorganic and physical chemistry, Paper 2 on organic and physical chemistry, and Paper 3 draws on the whole course, including practical principles. ALN groups questions under the specification's numbered topics, from atomic structure and bonding through to transition metals and analytical techniques.
Step-by-step model answers
252 of 252 questions in this course have a model answer that walks through how to earn each mark, not just what the mark scheme lists. More are added paper by paper.
See a real example- 252 questions
- 27 past papers
- 9 exam series, June 2017 to June 2025
- Paper Analysis for 27 of 27 papers
The Free plan includes a daily allowance of questions with their mark schemes. Questions are shown only after you log in.
Topics in this course
Specification headings, with how many ALN questions are matched to each. A question can test more than one heading.
- 1 · Atomic Structure and the Periodic Table27 questions
- 2 · Bonding and Structure46 questions
- 3 · Redox I14 questions
- 4 · Inorganic Chemistry and the Periodic Table28 questions
- 5 · Formulae, Equations and Amounts of Substance67 questions
- 6 · Organic Chemistry I67 questions
- 7 · Modern Analytical Techniques I9 questions
- 8 · Energetics I14 questions
- 9 · Kinetics I11 questions
- 10 · Equilibrium I4 questions
- 11 · Equilibrium II12 questions
- 12 · Acid-base Equilibria23 questions
- 13 · Energetics II23 questions
- 14 · Redox II31 questions
- 15 · Transition Metals27 questions
- 16 · Kinetics II24 questions
- 17 · Organic Chemistry II53 questions
- 18 · Organic Chemistry III44 questions
- 19 · Modern Analytical Techniques II23 questions
Most-examined topics
From Paper Analysis: the sub-sections that came up in the largest share of the papers we have analysed. These are past counts, not predictions.
- 17C · Carboxylic acidsOrganic Chemistry II · in 9 of 9 analysed Paper 2 papers, about 25 marks when it appears
- 6C · AlkenesOrganic Chemistry I · in 9 of 9 analysed Paper 2 papers, about 21 marks when it appears
- 6D · HalogenoalkanesOrganic Chemistry I · in 9 of 9 analysed Paper 2 papers, about 20 marks when it appears
- 6A · Introduction to organic chemistryOrganic Chemistry I · in 9 of 9 analysed Paper 2 papers, about 20 marks when it appears
- 17A · ChiralityOrganic Chemistry II · in 9 of 9 analysed Paper 2 papers, about 18 marks when it appears
The full breakdown by specification point, with the questions behind each count, is in Paper Analysis on the Basic and Premium plans.
Model answers by paper
Counts update automatically as papers and model answers are added. Recent papers appear once the exam board has released them publicly.
| Paper | With model answers | Questions | Past papers | In Paper Analysis |
|---|---|---|---|---|
| Paper 1 | 85 (100%) | 85 | 9 | 9 of 9 |
| Paper 2 | 82 (100%) | 82 | 9 | 9 of 9 |
| Paper 3 | 85 (100%) | 85 | 9 | 9 of 9 |