Chemistry past papers · IB SL
2021–2026Group 4Paper 1 · Paper 2 · Paper 3
IB Chemistry SL past papers — by session
Every recent Chemistry exam series we cover (2021–2026), each with Paper 1, Paper 2, Paper 3. Practise a paper, then mark it against the IB band descriptors — that's where the grade is won.
Practice by topic
Criterion-based practice for every syllabus point — revise the lesson, then mark your response band-by-band.
- S1.1Introduction to the particulate nature of matter
- S1.2The nuclear atom
- S1.3Electron configurations
- S1.4Counting particles by mass: the mole
- S1.5Ideal gases
- S2.1The ionic model
- S2.2The covalent model
- S2.3The metallic model
- S2.4From models to materials
- S3.1The periodic table: classification of elements
- S3.2Functional groups: classification of organic compounds
- R1.1Measuring enthalpy changes
- R1.2Energy cycles in reactions
- R1.3Energy from fuels
- R2.1How much? The amount of chemical change
- R2.2How fast? The rate of chemical change
- R2.3How far? The extent of chemical change
- R3.1Proton transfer reactions
- R3.2Electron transfer reactions
- R3.3Electron sharing reactions
- R3.4Electron-pair sharing reactions
Papers by exam series
- May 2026SLPaper 1Paper 2Paper 3
- November 2025SLPaper 1Paper 2Paper 3
- May 2025SLPaper 1Paper 2Paper 3
- November 2024SLPaper 1Paper 2Paper 3
- May 2024SLPaper 1Paper 2Paper 3
- November 2023SLPaper 1Paper 2Paper 3
- May 2023SLPaper 1Paper 2Paper 3
- November 2022SLPaper 1Paper 2Paper 3
- May 2022SLPaper 1Paper 2Paper 3
- November 2021SLPaper 1Paper 2Paper 3
- May 2021SLPaper 1Paper 2Paper 3
Practise any paper, then upload your answer for criteria-based feedback while official IB mark-scheme marking rolls out.
Frequently asked questions
- Where can I find IB Chemistry SL past papers?
- Every recent Chemistry SL exam series (2021–2026) is listed below by session, covering Paper 1, Paper 2, Paper 3. Practise each, then mark against the band descriptors.
- Does IB Chemistry have mark schemes?
- Yes — IB publishes mark schemes that use markbands and assessment criteria. Our guides explain how examiners place answers into level bands so you can mark your own work like an examiner.
- What's the best way to use Chemistry past papers?
- Work a full paper under timed conditions, mark yourself strictly against the band descriptors, list every mark you dropped, then drill those skills before the next session.
Best free IB Chemistry resources
Hand-picked, fully legal and free — official IB papers plus the best teacher-made notes and solutions.