IGCSE Chemistry (0620) — real past-paper questions, marked by AI
Chemistry questions live or die on precision: name the ion, balance the equation, describe the observation you would actually see, not the one you assume. IGCSE Chemistry (0620) splits into Core Papers 1 and 3 and Extended Papers 2 and 4, with Paper 5 the practical test and Paper 6 the alternative-to-practical route for candidates without lab access. Command words like state, describe and calculate each map to a different kind of marking point.
The hub carries 3,339 real 0620 questions from 88 papers set between 2023 and 2025. States of matter leads the topic count with 20 questions, ahead of rate of reaction, atomic structure and the Periodic Table, so you can see where examiners return again and again. Write your answer and the AI examiner marks it instantly against the real Cambridge scheme, flagging whether you named the correct observation or ion rather than gesturing at 'a colour change' or 'a reaction happens'.
Use the topic tags to sweep organic chemistry or electrolysis across three years of papers, then move to full timed variants. It is free, with no signup required.
New: How IGCSE Chemistry (0620) is really marked — command words, examiner-report findings and revision strategy.
Past papers by year
2025
| Paper | Session | Questions |
|---|---|---|
| Paper 11 | May–June 2025 | 40 |
| Paper 12 | May–June 2025 | 40 |
| Paper 13 | May–June 2025 | 40 |
| Paper 21 | May–June 2025 | 40 |
| Paper 22 | May–June 2025 | 40 |
| Paper 23 | May–June 2025 | 40 |
| Paper 31 | May–June 2025 | 8 |
| Paper 32 | May–June 2025 | 8 |
| Paper 33 | May–June 2025 | 8 |
| Paper 41 | May–June 2025 | 6 |
| Paper 42 | May–June 2025 | 6 |
| Paper 43 | May–June 2025 | 6 |
| Paper 51 | May–June 2025 | 3 |
| Paper 52 | May–June 2025 | 3 |
| Paper 53 | May–June 2025 | 3 |
| Paper 61 | May–June 2025 | 4 |
| Paper 62 | May–June 2025 | 4 |
| Paper 63 | May–June 2025 | 4 |
2024
| Paper | Session | Questions |
|---|---|---|
| Paper 11 | May–June 2024 | 40 |
| Paper 12 | May–June 2024 | 40 |
| Paper 13 | May–June 2024 | 40 |
| Paper 21 | May–June 2024 | 40 |
| Paper 22 | May–June 2024 | 40 |
| Paper 23 | May–June 2024 | 40 |
| Paper 31 | May–June 2024 | 8 |
| Paper 32 | May–June 2024 | 8 |
| Paper 33 | May–June 2024 | 8 |
| Paper 41 | May–June 2024 | 7 |
| Paper 42 | May–June 2024 | 6 |
| Paper 43 | May–June 2024 | 7 |
| Paper 51 | May–June 2024 | 3 |
| Paper 52 | May–June 2024 | 3 |
| Paper 53 | May–June 2024 | 3 |
| Paper 61 | May–June 2024 | 4 |
| Paper 62 | May–June 2024 | 4 |
| Paper 63 | May–June 2024 | 4 |
| Paper 11 | October–November 2024 | 40 |
| Paper 12 | October–November 2024 | 40 |
| Paper 13 | October–November 2024 | 40 |
| Paper 21 | October–November 2024 | 40 |
| Paper 22 | October–November 2024 | 40 |
| Paper 23 | October–November 2024 | 40 |
| Paper 31 | October–November 2024 | 8 |
| Paper 32 | October–November 2024 | 8 |
| Paper 33 | October–November 2024 | 8 |
| Paper 41 | October–November 2024 | 6 |
| Paper 42 | October–November 2024 | 6 |
| Paper 43 | October–November 2024 | 6 |
| Paper 52 | October–November 2024 | 3 |
| Paper 53 | October–November 2024 | 3 |
| Paper 61 | October–November 2024 | 4 |
| Paper 62 | October–November 2024 | 4 |
| Paper 63 | October–November 2024 | 4 |
2023
| Paper | Session | Questions |
|---|---|---|
| Paper 11 | May–June 2023 | 40 |
| Paper 12 | May–June 2023 | 40 |
| Paper 13 | May–June 2023 | 40 |
| Paper 21 | May–June 2023 | 40 |
| Paper 22 | May–June 2023 | 40 |
| Paper 23 | May–June 2023 | 40 |
| Paper 31 | May–June 2023 | 8 |
| Paper 32 | May–June 2023 | 8 |
| Paper 33 | May–June 2023 | 8 |
| Paper 41 | May–June 2023 | 7 |
| Paper 42 | May–June 2023 | 6 |
| Paper 43 | May–June 2023 | 7 |
| Paper 51 | May–June 2023 | 3 |
| Paper 52 | May–June 2023 | 3 |
| Paper 53 | May–June 2023 | 3 |
| Paper 61 | May–June 2023 | 4 |
| Paper 62 | May–June 2023 | 4 |
| Paper 63 | May–June 2023 | 4 |
| Paper 11 | October–November 2023 | 40 |
| Paper 12 | October–November 2023 | 40 |
| Paper 13 | October–November 2023 | 40 |
| Paper 21 | October–November 2023 | 40 |
| Paper 22 | October–November 2023 | 40 |
| Paper 23 | October–November 2023 | 40 |
| Paper 31 | October–November 2023 | 8 |
| Paper 32 | October–November 2023 | 8 |
| Paper 33 | October–November 2023 | 8 |
| Paper 41 | October–November 2023 | 6 |
| Paper 42 | October–November 2023 | 6 |
| Paper 43 | October–November 2023 | 6 |
| Paper 52 | October–November 2023 | 3 |
| Paper 53 | October–November 2023 | 3 |
| Paper 61 | October–November 2023 | 4 |
| Paper 62 | October–November 2023 | 4 |
| Paper 63 | October–November 2023 | 4 |
Practise IGCSE Chemistry by topic
- Organic chemistry (155 questions)
- The Periodic Table (102 questions)
- Metals (96 questions)
- Acids, bases and salts (84 questions)
- Experimental techniques and chemical analysis (84 questions)
- Chemical reactions (80 questions)
- Stoichiometry (62 questions)
- Chemical bonding (58 questions)
- Chemistry of the environment (55 questions)
- Atoms, elements and compounds (51 questions)
- Electrochemistry (47 questions)
- Practical skills (43 questions)
- States of matter (42 questions)
- Chemical energetics (38 questions)
Frequently asked questions
Which 0620 papers and years are covered?
All May–June and October–November sessions from 2023 to 2025 — 88 papers across Papers 1 to 6, with every variant included.
How does the AI marking work for chemistry answers?
The AI examiner checks your typed answer against the real Cambridge mark scheme for that exact question, awarding each marking point in turn and showing which accepted term or equation you matched.
What do Papers 1 to 6 mean in 0620?
Papers 1 and 2 are multiple choice at Core and Extended tier, Papers 3 and 4 are theory papers at each tier, Paper 5 is the practical test, and Paper 6 is the alternative to practical.
Is 0620 the same as 0971 Chemistry?
0971 covers the same content and exam style as 0620 — the difference is the grading scale it is reported on, not the questions themselves.
How should I revise chemistry with past papers?
Drill one topic at a time using the topic tags — organic chemistry, electrolysis, acids and bases — then move to full timed papers and use the point-by-point feedback to fix vague answers.
Is this site affiliated with Cambridge?
No. Questions are transcribed from real Cambridge papers and marked against the real mark schemes, which remain © Cambridge International; Cambridge Papers is an independent, free study tool.