Pearson Edexcel International A Level (IAL) Chemistry past papers and mark schemes
145 papers · January 2018 – June 2025
Some Pearson Edexcel International A Level (IAL) Chemistry papers appear under more than one code, such as WCH12/01R, WCH13/01R and WCH15/01A, so this page groups them by unit rather than by code. In total there are 145 papers: 133 from 22 exam series between January 2018 and June 2025 and 12 specimen papers, all with a mark scheme.
Units 1, 2, 4 and 5 carry 80 or 90 marks, while ‘Unit 3: Practical Skills in Chemistry I (WCH13/01)’ and ‘Unit 6: Practical Skills in Chemistry II (WCH16/01)’ are 50 marks in 1 hour 20 minutes. The six older-specification groups at the bottom come from the previous IAL Chemistry specification. They are kept for extra practice and are not used in the revision plan; the older Unit 5 group has 5 papers and the others have 6. Pearson hosts most files, though some open on Physics & Maths Tutor.
Work through the older series first and hold back the June 2025 papers for the final weeks. Reschedule is a revision planner. Tell it your units, the date of each paper and when you can study, and it schedules every subtopic before the paper that examines it. If you miss a day, unfinished tasks move to your next study days.
Unit 1: Structure, Bonding and Introduction to Organic Chemistry (WCH11/01)WCH11/01
1 h 30 min · 80 marks
What this paper covers
- U1 Unit 1: Structure, Bonding and Introduction to Organic ChemistryAtoms, elements and molecules · Equations and reaction types · Amount of substance · Empirical and molecular formulae · Calculations with solutions and gases · Atomic structure · The periodic table · Ionic bonding · Covalent bonding · Shapes of molecules · Metallic bonding · Solid lattices · Introduction to organic chemistry · Alkanes · Alkenes · Addition polymers
| Series | Code | Question paper | Mark scheme | Insert |
|---|---|---|---|---|
| June 2025 | WCH11/01 | Question paper | Mark scheme | — |
| January 2025 | WCH11/01 | Question paper | Mark scheme | — |
| October 2024 | WCH11/01 | Question paper | Mark scheme | — |
| June 2024 | WCH11/01 | Question paper | Mark scheme | — |
| January 2024 | WCH11/01 | Question paper | Mark scheme | — |
| October 2023 | WCH11/01 | Question paper | Mark scheme | — |
| June 2023 | WCH11/01 | Question paper | Mark scheme | — |
| January 2023 | WCH11/01 | Question paper | Mark scheme | — |
| October 2022 | WCH11/01 | Question paper | Mark scheme | — |
| June 2022 | WCH11/01 | Question paper | Mark scheme | — |
| January 2022 | WCH11/01 | Question paper | Mark scheme | — |
| October 2021 | WCH11/01 | Question paper | Mark scheme | — |
| June 2021 | WCH11/01 | Question paper | Mark scheme | — |
| January 2021 | WCH11/01 | Question paper | Mark scheme | — |
| October 2020 | WCH11/01 | Question paper | Mark scheme | — |
| January 2020 | WCH11/01 | Question paper | Mark scheme | — |
| October 2019 | WCH11/01 | Question paper | Mark scheme | — |
| June 2019 | WCH11/01 | Question paper | Mark scheme | — |
| January 2019 | WCH11/01 | Question paper | Mark scheme | — |
| Specimen (IAL) | WCH11/01 | Question paper | Mark scheme | — |
Opens on Pearson, Physics & Maths Tutor
Unit 2: Energetics, Group Chemistry, Halogenoalkanes and Alcohols (WCH12/01)WCH12/01, WCH12/01R
1 h 30 min · 80 marks
What this paper covers
- U2 Unit 2: Energetics, Group Chemistry, Halogenoalkanes and AlcoholsIntroducing enthalpy and enthalpy change · Enthalpy level diagrams · Standard enthalpy change of combustion · Standard enthalpy change of neutralisation · Standard enthalpy change of formation and Hess's law · Bond enthalpy and mean bond enthalpy · Using mean bond enthalpies · Intermolecular interactions · Intermolecular interactions and physical properties · Redox chemistry · The elements of groups 1 and 2 · Inorganic chemistry of group 7 · Quantitative chemistry · Kinetics · Equilibria · General principles in organic chemistry · Halogenoalkanes · Alcohols · Mass spectra and IR
| Series | Code | Question paper | Mark scheme | Insert |
|---|---|---|---|---|
| June 2025 | WCH12/01 | Question paper | Mark scheme | — |
| January 2025 | WCH12/01 | Question paper | Mark scheme | — |
| October 2024 | WCH12/01 | Question paper | Mark scheme | — |
| June 2024 | WCH12/01 | Question paper | Mark scheme | — |
| June 2024 | WCH12/01R | Question paper | Mark scheme | — |
| January 2024 | WCH12/01 | Question paper | Mark scheme | — |
| October 2023 | WCH12/01 | Question paper | Mark scheme | — |
| June 2023 | WCH12/01 | Question paper | Mark scheme | — |
| January 2023 | WCH12/01 | Question paper | Mark scheme | — |
| October 2022 | WCH12/01 | Question paper | Mark scheme | — |
| June 2022 | WCH12/01 | Question paper | Mark scheme | — |
| January 2022 | WCH12/01 | Question paper | Mark scheme | — |
| October 2021 | WCH12/01 | Question paper | Mark scheme | — |
| June 2021 | WCH12/01 | Question paper | Mark scheme | — |
| January 2021 | WCH12/01 | Question paper | Mark scheme | — |
| October 2020 | WCH12/01 | Question paper | Mark scheme | — |
| January 2020 | WCH12/01 | Question paper | Mark scheme | — |
| October 2019 | WCH12/01 | Question paper | Mark scheme | — |
| June 2019 | WCH12/01 | Question paper | Mark scheme | — |
| Specimen (IAL) | WCH12/01 | Question paper | Mark scheme | — |
Opens on Pearson, Physics & Maths Tutor
Unit 3: Practical Skills in Chemistry I (WCH13/01)WCH13/01, WCH13/01R
1 h 20 min · 50 marks
What this paper covers
- U3 Unit 3: Practical Skills in Chemistry IPractical Skills in Chemistry I
| Series | Code | Question paper | Mark scheme | Insert |
|---|---|---|---|---|
| June 2025 | WCH13/01 | Question paper | Mark scheme | — |
| January 2025 | WCH13/01 | Question paper | Mark scheme | — |
| October 2024 | WCH13/01 | Question paper | Mark scheme | — |
| June 2024 | WCH13/01 | Question paper | Mark scheme | — |
| June 2024 | WCH13/01R | Question paper | Mark scheme | — |
| January 2024 | WCH13/01 | Question paper | Mark scheme | — |
| October 2023 | WCH13/01 | Question paper | Mark scheme | — |
| June 2023 | WCH13/01 | Question paper | Mark scheme | — |
| January 2023 | WCH13/01 | Question paper | Mark scheme | — |
| October 2022 | WCH13/01 | Question paper | Mark scheme | — |
| June 2022 | WCH13/01 | Question paper | Mark scheme | — |
| January 2022 | WCH13/01 | Question paper | Mark scheme | — |
| October 2021 | WCH13/01 | Question paper | Mark scheme | — |
| June 2021 | WCH13/01 | Question paper | Mark scheme | — |
| January 2021 | WCH13/01 | Question paper | Mark scheme | — |
| October 2020 | WCH13/01 | Question paper | Mark scheme | — |
| January 2020 | WCH13/01 | Question paper | Mark scheme | — |
| October 2019 | WCH13/01 | Question paper | Mark scheme | — |
| June 2019 | WCH13/01 | Question paper | Mark scheme | — |
| Specimen (IAL) | WCH13/01 | Question paper | Mark scheme | — |
Opens on Pearson, Physics & Maths Tutor
Unit 4: Rates, Equilibria and Further Organic Chemistry (WCH14/01)WCH14/01
1 h 45 min · 90 marks
What this paper covers
- U4 Unit 4: Rates, Equilibria and Further Organic ChemistryFurther kinetics · Entropy · Lattice energy · Chemical equilibria · Strong and weak acids · Acid–base titrations · Chirality · Carbonyl compounds · Carboxylic acids · Carboxylic acid derivatives · Spectroscopy and chromatography
| Series | Code | Question paper | Mark scheme | Insert |
|---|---|---|---|---|
| June 2025 | WCH14/01 | Question paper | Mark scheme | — |
| January 2025 | WCH14/01 | Question paper | Mark scheme | — |
| October 2024 | WCH14/01 | Question paper | Mark scheme | — |
| June 2024 | WCH14/01 | Question paper | Mark scheme | — |
| January 2024 | WCH14/01 | Question paper | Mark scheme | — |
| October 2023 | WCH14/01 | Question paper | Mark scheme | — |
| June 2023 | WCH14/01 | Question paper | Mark scheme | — |
| January 2023 | WCH14/01 | Question paper | Mark scheme | — |
| October 2022 | WCH14/01 | Question paper | Mark scheme | — |
| June 2022 | WCH14/01 | Question paper | Mark scheme | — |
| January 2022 | WCH14/01 | Question paper | Mark scheme | — |
| October 2021 | WCH14/01 | Question paper | Mark scheme | — |
| June 2021 | WCH14/01 | Question paper | Mark scheme | — |
| January 2021 | WCH14/01 | Question paper | Mark scheme | — |
| October 2020 | WCH14/01 | Question paper | Mark scheme | — |
| January 2020 | WCH14/01 | Question paper | Mark scheme | — |
| Specimen (IAL) | WCH14/01 | Question paper | Mark scheme | — |
Opens on Pearson, Physics & Maths Tutor
Unit 5: Transition Metals and Organic Nitrogen Chemistry (WCH15/01)WCH15/01, WCH15/01A
1 h 45 min · 90 marks
What this paper covers
- U5 Unit 5: Transition Metals and Organic Nitrogen ChemistryStandard electrode potential · Redox in action · Principles of transition metal chemistry · Transition metal reactions · Transition metals as catalysts · Arenes: benzene · Amines, amides, amino acids and proteins · Organic structures
| Series | Code | Question paper | Mark scheme | Insert |
|---|---|---|---|---|
| June 2025 | WCH15/01 | Question paper | Mark scheme | — |
| June 2025 | WCH15/01A | Question paper | Mark scheme | — |
| January 2025 | WCH15/01 | Question paper | Mark scheme | — |
| October 2024 | WCH15/01 | Question paper | Mark scheme | — |
| June 2024 | WCH15/01 | Question paper | Mark scheme | — |
| January 2024 | WCH15/01 | Question paper | Mark scheme | — |
| October 2023 | WCH15/01 | Question paper | Mark scheme | — |
| June 2023 | WCH15/01 | Question paper | Mark scheme | — |
| January 2023 | WCH15/01 | Question paper | Mark scheme | — |
| October 2022 | WCH15/01 | Question paper | Mark scheme | — |
| June 2022 | WCH15/01 | Question paper | Mark scheme | — |
| January 2022 | WCH15/01 | Question paper | Mark scheme | — |
| October 2021 | WCH15/01 | Question paper | Mark scheme | — |
| June 2021 | WCH15/01 | Question paper | Mark scheme | — |
| January 2021 | WCH15/01 | Question paper | Mark scheme | — |
| October 2020 | WCH15/01 | Question paper | Mark scheme | — |
| Specimen (IAL) | WCH15/01 | Question paper | Mark scheme | — |
Opens on Pearson, Physics & Maths Tutor
Unit 6: Practical Skills in Chemistry II (WCH16/01)WCH16/01
1 h 20 min · 50 marks
What this paper covers
- U6 Unit 6: Practical Skills in Chemistry IIPractical Skills in Chemistry II
| Series | Code | Question paper | Mark scheme | Insert |
|---|---|---|---|---|
| June 2025 | WCH16/01 | Question paper | Mark scheme | — |
| January 2025 | WCH16/01 | Question paper | Mark scheme | — |
| October 2024 | WCH16/01 | Question paper | Mark scheme | — |
| June 2024 | WCH16/01 | Question paper | Mark scheme | — |
| January 2024 | WCH16/01 | Question paper | Mark scheme | — |
| June 2023 | WCH16/01 | Question paper | Mark scheme | — |
| January 2023 | WCH16/01 | Question paper | Mark scheme | — |
| October 2022 | WCH16/01 | Question paper | Mark scheme | — |
| June 2022 | WCH16/01 | Question paper | Mark scheme | — |
| January 2022 | WCH16/01 | Question paper | Mark scheme | — |
| January 2022 | WCH16/01 | Question paper | Mark scheme | — |
| October 2021 | WCH16/01 | Question paper | Mark scheme | — |
| June 2021 | WCH16/01 | Question paper | Mark scheme | — |
| January 2021 | WCH16/01 | Question paper | Mark scheme | — |
| October 2020 | WCH16/01 | Question paper | Mark scheme | — |
| Specimen (IAL) | WCH16/01 | Question paper | Mark scheme | — |
Opens on Pearson, Physics & Maths Tutor
Unit 1 (older specification)Unit 1
1 h 30 min · 80 marks
Papers from the older IAL specification, kept for extra practice.
| Series | Code | Question paper | Mark scheme | Insert |
|---|---|---|---|---|
| June 2019 | Unit 1 | Question paper | Mark scheme | — |
| January 2019 | Unit 1 | Question paper | Mark scheme | — |
| October 2018 | Unit 1 | Question paper | Mark scheme | — |
| June 2018 | Unit 1 | Question paper | Mark scheme | — |
| January 2018 | Unit 1 | Question paper | Mark scheme | — |
| Specimen (IAL) | Unit 1 | Question paper | Mark scheme | — |
Opens on Physics & Maths Tutor
Unit 2 (older specification)Unit 2
1 h 30 min · 80 marks
Papers from the older IAL specification, kept for extra practice.
| Series | Code | Question paper | Mark scheme | Insert |
|---|---|---|---|---|
| June 2019 | Unit 2 | Question paper | Mark scheme | — |
| January 2019 | Unit 2 | Question paper | Mark scheme | — |
| October 2018 | Unit 2 | Question paper | Mark scheme | — |
| June 2018 | Unit 2 | Question paper | Mark scheme | — |
| January 2018 | Unit 2 | Question paper | Mark scheme | — |
| Specimen (IAL) | Unit 2 | Question paper | Mark scheme | — |
Opens on Physics & Maths Tutor
Unit 3 (older specification)Unit 3
1 h 15 min · 50 marks
Papers from the older IAL specification, kept for extra practice.
| Series | Code | Question paper | Mark scheme | Insert |
|---|---|---|---|---|
| June 2019 | Unit 3 | Question paper | Mark scheme | — |
| January 2019 | Unit 3 | Question paper | Mark scheme | — |
| October 2018 | Unit 3 | Question paper | Mark scheme | — |
| June 2018 | Unit 3 | Question paper | Mark scheme | — |
| January 2018 | Unit 3 | Question paper | Mark scheme | — |
| Specimen (IAL) | Unit 3 | Question paper | Mark scheme | — |
Opens on Physics & Maths Tutor
Unit 4 (older specification)Unit 4
1 h 40 min · 90 marks
Papers from the older IAL specification, kept for extra practice.
| Series | Code | Question paper | Mark scheme | Insert |
|---|---|---|---|---|
| June 2019 | Unit 4 | Question paper | Mark scheme | — |
| January 2019 | Unit 4 | Question paper | Mark scheme | — |
| October 2018 | Unit 4 | Question paper | Mark scheme | — |
| June 2018 | Unit 4 | Question paper | Mark scheme | — |
| January 2018 | Unit 4 | Question paper | Mark scheme | — |
| Specimen (IAL) | Unit 4 | Question paper | Mark scheme | — |
Opens on Physics & Maths Tutor
Unit 5 (older specification)Unit 5
1 h 40 min · 90 marks
Papers from the older IAL specification, kept for extra practice.
| Series | Code | Question paper | Mark scheme | Insert |
|---|---|---|---|---|
| January 2019 | Unit 5 | Question paper | Mark scheme | — |
| October 2018 | Unit 5 | Question paper | Mark scheme | — |
| June 2018 | Unit 5 | Question paper | Mark scheme | — |
| January 2018 | Unit 5 | Question paper | Mark scheme | — |
| Specimen (IAL) | Unit 5 | Question paper | Mark scheme | — |
Opens on Physics & Maths Tutor
Unit 6 (older specification)Unit 6
1 h 15 min · 50 marks
Papers from the older IAL specification, kept for extra practice.
| Series | Code | Question paper | Mark scheme | Insert |
|---|---|---|---|---|
| June 2019 | Unit 6 | Question paper | Mark scheme | — |
| January 2019 | Unit 6 | Question paper | Mark scheme | — |
| October 2018 | Unit 6 | Question paper | Mark scheme | — |
| June 2018 | Unit 6 | Question paper | Mark scheme | — |
| January 2018 | Unit 6 | Question paper | Mark scheme | — |
| Specimen (IAL) | Unit 6 | Question paper | Mark scheme | — |
Opens on Physics & Maths Tutor
Common questions
- Where can I find Edexcel IAL Chemistry mark schemes?
- Every paper on this page has its mark scheme linked in the same row. Each link opens the PDF where it is hosted.
- Which years of Edexcel IAL Chemistry past papers are here?
- The page lists 133 papers from 22 exam series, January 2018 to June 2025, and 12 specimen or sample papers.
- How are Edexcel IAL Chemistry past papers organised on this page?
- Papers are grouped by exam paper, then by series with the newest first: Unit 1: Structure, Bonding and Introduction to Organic Chemistry (WCH11/01) (1 hour 30 minutes, 80 marks), Unit 2: Energetics, Group Chemistry, Halogenoalkanes and Alcohols (WCH12/01) (1 hour 30 minutes, 80 marks), Unit 3: Practical Skills in Chemistry I (WCH13/01) (1 hour 20 minutes, 50 marks), Unit 4: Rates, Equilibria and Further Organic Chemistry (WCH14/01) (1 hour 45 minutes, 90 marks), Unit 5: Transition Metals and Organic Nitrogen Chemistry (WCH15/01) (1 hour 45 minutes, 90 marks) and Unit 6: Practical Skills in Chemistry II (WCH16/01) (1 hour 20 minutes, 50 marks). Durations and marks are the most common values across the series listed.
- Are these the official Edexcel IAL papers?
- They are the papers set by Edexcel IAL. Links open the PDF where it is hosted: 102 on the Pearson website and 43 on Physics & Maths Tutor. Reschedule is independent and not affiliated with any exam board.
- How do I fit past papers into my revision plan?
- Add Chemistry and Edexcel IAL in Reschedule with the date of each paper. It builds a daily revision plan that schedules each subtopic before the paper that examines it and adds past papers for each paper, then re-fits the plan if you miss a day.
More Edexcel IAL subjects
Reschedule is independent and not affiliated with any exam board.