Cambridge IGCSE Chemistry (0620) Past Papers 2024–2025 – Latest Papers, Mark Schemes & Examiner Resources (2026 Updated)
- Daniel White
- Feb 23
- 16 min read
Updated: Mar 19
This page gives you the complete and latest collection of Cambridge IGCSE Chemistry (0620) past papers for 2024–2025, including all variants, official question papers, mark schemes, and examiner resources to support you. Updated for 2026, these papers are essential. Before attempting them, we recommend reading the advice below compiled by our experienced Kingsbridge teachers and examiners, as it highlights the most common mistakes and strategies to do well for this subject.
Which Cambridge IGCSE Chemistry Past Papers are relevant to you? Most students are entered for the Extended tier, which is the only route that allows you to achieve the top grades (A*–C). If you are entered for Extended, you should focus your revision on Paper 2, Paper 4, and either Paper 5 or 6 (Practical or Alternative to Practical). If you are entered for the Core tier, you will instead sit Paper 1, Paper 3, and either Paper 5 or 6. If you are unsure which tier you are entered for, please check with your teacher.
Cambridge IGCSE Chemistry (0620) October November 2025 Past Papers – All Variants, Question Papers & Mark Schemes
2025 Cambridge IGCSE Chemistry 0620 | Downloads | |
Cambridge IGCSE Chemistry 0620 Oct Nov 2025 Paper 11 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2025 Paper 12 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2025 Paper 13 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2025 Paper 21 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2025 Paper 22 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2025 Paper 23 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2025 Paper 31 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2025 Paper 32 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2025 Paper 33 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2025 Paper 41 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2025 Paper 42 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2025 Paper 43 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2025 Paper 52 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2025 Paper 53 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2025 Paper 61 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2025 Paper 62 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2025 Paper 63 | ||
How many marks did you need for an A*, A, B or C in Cambridge IGCSE Chemistry (0620) Extended – November 2025?
For the Extended tier in Cambridge IGCSE Chemistry (0620) November 2025, your final grade is based on your total mark out of 200 across Paper 2 (Multiple Choice), Paper 4 (Theory), and either Paper 5 or 6 (Practical or Alternative to Practical). The exact marks vary slightly depending on the variant, but overall the thresholds were very similar. To achieve a Grade A*, students typically needed around 153–163 marks out of 200. For a Grade A, this was roughly 127–137 marks, while a Grade B required about 101–111 marks, and a Grade C required approximately 76–86 marks in total.
Cambridge IGCSE Chemistry (0620) May June 2025 Past Papers – All Variants, Question Papers & Mark Schemes
2025 Cambridge IGCSE Chemistry 0620 | Downloads | |
Cambridge IGCSE Chemistry 0620 May June 2025 Paper 11 | ||
Cambridge IGCSE Chemistry 0620 May June 2025 Paper 12 | ||
Cambridge IGCSE Chemistry 0620 May June 2025 Paper 13 | ||
Cambridge IGCSE Chemistry 0620 May June 2025 Paper 21 | ||
Cambridge IGCSE Chemistry 0620 May June 2025 Paper 22 | ||
Cambridge IGCSE Chemistry 0620 May June 2025 Paper 23 | ||
Cambridge IGCSE Chemistry 0620 May June 2025 Paper 31 | ||
Cambridge IGCSE Chemistry 0620 May June 2025 Paper 32 | ||
Cambridge IGCSE Chemistry 0620 May June 2025 Paper 33 | ||
Cambridge IGCSE Chemistry 0620 May June 2025 Paper 41 | ||
Cambridge IGCSE Chemistry 0620 May June 2025 Paper 42 | ||
Cambridge IGCSE Chemistry 0620 May June 2025 Paper 43 | ||
Cambridge IGCSE Chemistry 0620 May June 2025 Paper 51 | ||
Cambridge IGCSE Chemistry 0620 May June 2025 Paper 52 | ||
Cambridge IGCSE Chemistry 0620 May June 2025 Paper 53 | ||
Cambridge IGCSE Chemistry 0620 May June 2025 Paper 61 | ||
Cambridge IGCSE Chemistry 0620 May June 2025 Paper 62 | ||
Cambridge IGCSE Chemistry 0620 May June 2025 Paper 63 | ||
How many marks did you need for an A, A, B or C in Cambridge IGCSE Chemistry (0620) Extended – June 2025?
For the June 2025 Extended tier Cambridge IGCSE Chemistry (0620), your final grade was based on your total mark out of 200 across Paper 2 (Multiple Choice), Paper 4 (Theory) and either Paper 5 or 6 (Practical or Alternative to Practical). The exact grade boundaries varied slightly depending on the variant, but overall they were very consistent. To achieve a Grade A*, students typically needed around 171–173 marks out of 200, while a Grade A required approximately 143–147 marks. A Grade B needed about 115–118 marks, and a Grade C required around 88–89 marks overall.
Cambridge IGCSE Chemistry (0620) March 2025 Past Papers – All Question Papers, Variants & Mark Schemes
2025 Cambridge IGCSE Chemistry 0620 | Downloads | |
Cambridge IGCSE Chemistry 0620 March 2025 Paper 12 | ||
Cambridge IGCSE Chemistry 0620 March 2025 Paper 22 | ||
Cambridge IGCSE Chemistry 0620 March 2025 Paper 32 | ||
Cambridge IGCSE Chemistry 0620 March 2025 Paper 42 | ||
Cambridge IGCSE Chemistry 0620 March 2025 Paper 52 | ||
Cambridge IGCSE Chemistry 0620 March 2025 Paper 62 | ||
How many marks did you need for an A, A, B or C in Cambridge IGCSE Chemistry (0620) Extended – March 2025?
For the March 2025 Extended tier Cambridge IGCSE Chemistry (0620), the final grade was based on your total mark out of 200 across Paper 2 (Multiple Choice), Paper 4 (Theory) and either Paper 5 or 6 (Practical or Alternative to Practical). The grade boundaries were slightly higher in this session compared to other sittings. To achieve a Grade A*, students needed around 176–177 marks out of 200, while a Grade A required approximately 153–154 marks. A Grade B needed about 125–126 marks, and a Grade C required around 98–99 marks overall.
Cambridge IGCSE Chemistry (0620) October/November 2024 Past Papers – All Question Papers, Variants & Mark Schemes
2024 Cambridge IGCSE Chemistry 0620 | Downloads | |
Cambridge IGCSE Chemistry 0620 Oct Nov 2024 Paper 11 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2024 Paper 12 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2024 Paper 13 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2024 Paper 21 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2024 Paper 22 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2024 Paper 23 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2024 Paper 31 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2024 Paper 32 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2024 Paper 33 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2024 Paper 41 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2024 Paper 42 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2024 Paper 43 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2024 Paper 52 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2024 Paper 53 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2024 Paper 61 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2024 Paper 62 | ||
Cambridge IGCSE Chemistry 0620 Oct Nov 2024 Paper 63 | ||
How many marks did you need for an A, A, B or C in Cambridge IGCSE Chemistry (0620) Extended – November 2024?
For the November 2024 Extended tier Cambridge IGCSE Chemistry (0620), your final grade was based on the total mark out of 200 across Paper 2 (Multiple Choice), Paper 4 (Theory) and either Paper 5 or 6 (Practical or Alternative to Practical). The grade boundaries were fairly typical for this exam session. To achieve a Grade A*, students needed around 155–158 marks out of 200, while a Grade A required approximately 131–133 marks. A Grade B needed about 106–109 marks, and a Grade C required around 82–85 marks overall, although the exact mark depends on the variant and whether you took the practical or alternative practical route.
Cambridge IGCSE Chemistry (0620) May/June 2024 Past Papers – All Question Papers, Variants & Mark Schemes
2024 Cambridge IGCSE Chemistry 0620 | Downloads | |
Cambridge IGCSE Chemistry 0620 May June 2024 Paper 11 | ||
Cambridge IGCSE Chemistry 0620 May June 2024 Paper 12 | ||
Cambridge IGCSE Chemistry 0620 May June 2024 Paper 13 | ||
Cambridge IGCSE Chemistry 0620 May June 2024 Paper 21 | ||
Cambridge IGCSE Chemistry 0620 May June 2024 Paper 22 | ||
Cambridge IGCSE Chemistry 0620 May June 2024 Paper 23 | ||
Cambridge IGCSE Chemistry 0620 May June 2024 Paper 31 | ||
Cambridge IGCSE Chemistry 0620 May June 2024 Paper 32 | ||
Cambridge IGCSE Chemistry 0620 May June 2024 Paper 33 | ||
Cambridge IGCSE Chemistry 0620 May June 2024 Paper 41 | ||
Cambridge IGCSE Chemistry 0620 May June 2024 Paper 42 | ||
Cambridge IGCSE Chemistry 0620 May June 2024 Paper 43 | ||
Cambridge IGCSE Chemistry 0620 May June 2024 Paper 51 | ||
Cambridge IGCSE Chemistry 0620 May June 2024 Paper 52 | ||
Cambridge IGCSE Chemistry 0620 May June 2024 Paper 53 | ||
Cambridge IGCSE Chemistry 0620 May June 2024 Paper 61 | ||
Cambridge IGCSE Chemistry 0620 May June 2024 Paper 62 | ||
Cambridge IGCSE Chemistry 0620 May June 2024 Paper 63 | ||
Cambridge IGCSE Chemistry (0620) March 2024 Past Papers – All Question Papers, Variants & Mark Schemes
2024 Cambridge IGCSE Chemistry 0620 | Downloads | |
Cambridge IGCSE Chemistry 0620 March 2024 Paper 12 | ||
Cambridge IGCSE Chemistry 0620 March 2024 Paper 22 | ||
Cambridge IGCSE Chemistry 0620 March 2024 Paper 32 | ||
Cambridge IGCSE Chemistry 0620 March 2024 Paper 42 | ||
Cambridge IGCSE Chemistry 0620 March 2024 Paper 52 | ||
Cambridge IGCSE Chemistry 0620 March 2024 Paper 62 | ||
How many marks did you need for an A, A, B or C in Cambridge IGCSE Chemistry (0620) Extended – March 2024?”
For the March 2024 Extended tier Cambridge IGCSE Chemistry (0620), the final grade was based on your total mark out of 200 across Paper 2 (Multiple Choice), Paper 4 (Theory) and either Paper 5 or 6 (Practical or Alternative to Practical). The grade boundaries in this session were lower than in some later sittings. To achieve a Grade A*, students needed around 162–164 marks out of 200, while a Grade A required approximately 135–136 marks. A Grade B needed about 108 marks, and a Grade C required around 81 marks overall.
What Do Cambridge IGCSE Chemistry Examiners Look For? A Complete Guide
Cambridge IGCSE Chemistry is not just about memorising content. Every year, thousands of students lose easy marks. Our teachers and examiners have spent years looking at past script and have identified the most common mistakes being made for the papers. We strongly recommend that you read the following sections carefully
How Can You Avoid Losing Marks by Misinterpreting Questions in Chemistry? (According to IGCSE Chemistry Examiners)
Watch Out for Questions Hidden in Diagrams
One of the most common ways students lose easy marks is by missing questions that ask you to add something directly to a diagram — like drawing arrows to show heat transfer. Because there's no dotted answer line to catch your eye, these questions are easy to skip right past. The fix is simple: make a habit of reading every part of the paper, not just scanning for response lines. A slow, careful read-through at the start can save you from leaving marks on the table for no reason.
Read Every Option Before You Choose
In multiple-choice questions, many students fall into the trap of selecting the first answer that sounds right without reading the full statement or all the options. Examiners know this, and they write the choices carefully — a partially correct option is there to catch you out. Before you commit to an answer, read every word of every choice. What seems right after option A might look very different once you've read option D.
Make Sure You're Answering What's Actually Being Asked
This one catches a lot of students: when asked why cracking is carried out, many answers explain what cracking is instead. These are very different things, and only one of them gets you the marks. Similarly, watch out for words like "unsaturated" — in the context of alkenes, it means something quite different from an unsaturated solution.
Command words like deduce, explain, and predict each call for a specific type of response, so it's well worth getting familiar with what each one is really asking for. When in doubt, pause and re-read the question before you write anything.
What Are the Most Common Conceptual Errors in Cambridge IGCSE Chemistry? (According to IGCSE Chemistry Examiners)
Get Crystal Clear on Particles: Arrangement, Separation, and Motion
These three words might seem interchangeable, but to an examiner they mean three completely different things — and mixing them up is one of the most frequent mistakes seen across scripts. Arrangement describes how particles are positioned relative to each other (orderly or random?). Separation describes how far apart they are. Motion describes how they're actually moving. A solid, liquid, and gas each have their own distinct answer for all three, so it's worth sitting down and learning each combination explicitly rather than trying to figure it out from scratch in the exam. A simple table comparing all three states across all three terms can make this click very quickly.
Bonding: Don't Just Guess — Use the Clues in Front of You
A surprising number of students assume that any compound with a metal-sounding name must be ionic. Silicon(IV) oxide is a classic example — it looks like it should be ionic, but it's actually a giant covalent structure. The reliable approach is to look at the Periodic Table and ask: what types of elements are involved? Metals bonding with non-metals typically points to ionic bonding. Two non-metals together almost always means covalent. And when you're describing a covalent bond specifically, be precise: it's the sharing of a pair of electrons between two atoms. That level of detail is exactly what examiners are looking for, and it's what separates a vague answer from a full-mark one.
Redox: Learn to Spot It Even When It's in Disguise
Redox reactions don't always announce themselves, and that's exactly where students get caught out. Combustion of a hydrocarbon, for example, is absolutely a redox reaction — but because it doesn't look like a "typical" redox question, many students don't treat it as one. The key habit to build is checking for changes in oxidation state whenever you see a reaction, regardless of the topic it appears under.
The other big stumbling block is electron transfer direction and the role of each species. Remember: the reducing agent loses electrons and gets oxidised, while the oxidising agentgains electrons and gets reduced. A very common mistake is pointing to the products when asked to identify the oxidising or reducing agent — but it's always the reactants that play those roles, because they're the ones doing the transferring. Keep that distinction sharp and you'll avoid a frustratingly avoidable error.
Electrolysis: Get the Basics Locked Down First
Mixing up the anode and cathode is a mistake that costs marks across multiple parts of a question, so it's worth anchoring this firmly: the anode is positive and is where oxidation occurs, the cathode is negative and is where reduction occurs. A memory trick that helps many students: AN OX, RED CAT — ANode = OXidation, REDuction = CAThode.
For aqueous electrolysis specifically, you also need to know the rules for which ions get discharged when there's competition — for example, why copper ions are discharged at the cathode in preference to hydrogen ions under certain conditions. Practising the construction of ionic half-equations is the best way to get comfortable here, because it forces you to think through exactly what's being gained or lost at each electrode, rather than just guessing the products.
How Top Students Score Highly in Chemistry Practicals (Cambridge IGCSE Examiner Advice)
Say What You Actually See
When you observe a reaction producing gas, writing "a gas is produced" won't get you the mark — that's a conclusion, not an observation. An observation is what you see with your own eyes in that moment, so use words like effervescence, fizzing, or bubbles forming. It's a small shift in language but a meaningful one to examiners, and it applies across all your practical questions. If you can see it, describe it. If you're interpreting it, that's a conclusion — and the question will tell you when it wants one of those.
Consistency in Data Recording
This is a detail that's easy to overlook but simple to fix. If you're reading from a burette and the true resolution is one decimal place, then every reading in your table should show one decimal place — so 25.0, not 25. A missing decimal place tells the examiner you may not understand the precision of the instrument you're using. Before you move on from any results table, quickly check that all values from the same apparatus are recorded to the same number of decimal places throughout.
Graph Plotting: Set Yourself Up for Success
A few avoidable habits consistently cost students marks on graphs. Choosing awkward scales — like 3 or 7 units per grid square — makes plotting inaccurate and difficult to mark. Stick to scales based on 1, 2, or 5 units per grid square and make sure your data spreads across at least half the grid in both directions. And if your points are clearly forming a curve, don't force a straight line through them — draw a smooth curve of best fit instead, using a sharp pencil so it stays clean and precise. Let the data tell you the shape; don't decide the shape before you look at the data.
Experimental Plans: Think Through the Whole Process
A well-written experimental plan covers more than just the main steps — it accounts for the small but essential details that make a procedure actually work. Students frequently leave out things like stirring a mixture to help a solid dissolve, or washing and drying a precipitate before weighing it to avoid skewed results. If a question involves a catalyst, remember that checking whether it's been used up means weighing it before and after the reaction — a step that's easy to include but just as easy to forget. When writing a plan, mentally walk yourself through the experiment from start to finish and ask: have I missed anything that would affect the result?
What Calculation Mistakes Do Cambridge IGCSE Chemistry Students Make? Examiner Advice
Mr Calculations: Use the Right Numbers From the Start
One of the most common errors in calculation questions is reaching for the atomic numberinstead of the relative atomic mass — they're both on the Periodic Table, but they're very different things. The relative atomic mass (Ar) is the larger number, and that's the one you need. The other place students come unstuck is with formulas containing brackets, like Al₂(SO₄)₃. Everything inside the bracket gets multiplied by the number outside it, so work through it methodically: count each atom type carefully, and don't rush. A moment's care here prevents a calculation going wrong from the very first step.
Show Your Working — Every Time
If your final answer is wrong but your method is sound, examiners can and do award partial credit — but only if they can see what you did. So write everything out. Beyond that, when a calculation gives you a fraction, convert it to a decimal rather than leaving it as-is, and be careful with rounding. Rounding too early or too aggressively is a subtle way to lose marks that students often don't notice until it's too late. Keep full values through your working and only round at the very end.
Stoichiometry: Always Check the Mole Ratio
It's tempting to assume that two substances in a reaction are reacting in a 1:1 ratio — but this is only true if the balanced equation actually shows that. Before you do any mole calculation involving two different substances, look at the equation and find the ratio. If it's 1:2 or 2:3, that ratio needs to be built into your working. Skipping this step is one of the more costly mistakes in calculation questions because it throws off the entire answer, even when everything else is done correctly.
What Common Language Mistakes Cost Students Marks in Cambridge IGCSE Chemistry?
Be Specific — Vague Language Costs Marks
When you write "it increases" or "they react," the examiner has to guess what you're referring to — and they won't give you the benefit of the doubt. Always name the substance, property, or variable you're talking about explicitly. It's also worth knowing that contradicting yourself within an answer, even accidentally, can cost you a mark that you otherwise earned. Writing in clear, distinct points rather than long flowing sentences makes it much easier to stay precise and avoid saying two things that conflict with each other.
"Temperature" Is Not Enough
If a question asks for reaction conditions and you write "temperature," that tells the examiner almost nothing. Is it high? Low? A specific value? The word alone won't get you the mark — you need to qualify it. "High temperature," "approximately 450°C," or whatever the syllabus specifies is what's expected. The same logic applies to other conditions too: "pressure" should be "high pressure," and so on. Get into the habit of asking yourself: have I actually said anything specific here, or just used a placeholder word?
Struggling to Remember Orders and Sequences? Make It Stick
Whether it's the reactivity series, the order of petroleum fractions, or any other list you need to recall, a well-chosen mnemonic can be the difference between remembering it under pressure and drawing a blank. If you don't have one already, try building your own — the sillier and more personal it is, the better it tends to work. There are also mnemonic generator tools online that can help you come up with something memorable quickly. A few minutes spent on this during revision can quietly save you marks across multiple questions on exam day.
Are There Any New Changes for The 2026 IGCSE Chemistry Syllabus?
Good news — almost nothing has changed. Cambridge has already published the syllabus for 2026–2028, and it's essentially the same as the 2023–2025 version. If you've been preparing the above resources, you're already on track.
The only real update is a minor cosmetic refresh to the question paper layout — things like font and formatting tweaks to improve accessibility. The actual chemistry content being tested is identical.
Can I Still Use Past Papers from Before 2023 for Cambridge IGCSE Chemistry?
Yes, but with important caveats. Past papers are still a valuable revision tool, but the syllabus changed significantly in 2023, so you need to know what's been added or removed to avoid wasting time — or worse, learning content that's no longer tested.
What's been removed?
Some topics from older papers simply won't appear anymore. If you come across questions on any of the following, you can safely skip them:
Sulfur and carbonates as a standalone unit (though the Contact Process is still in)
Extraction of zinc and thermal decomposition of zinc compounds
Protein hydrolysis and carbohydrates like starch and glucose
Brownian motion, the carbon cycle, and silver salts in photography
What's new that old papers won't cover?
A few topics are now examinable that you won't find in older papers at all, so you'll need to study these separately:
Chemistry of the Environment — a whole new unit covering air quality, climate change, and water treatment
Thymolphthalein as an indicator
Cooling curves in the states of matter topic
Any changes to how the exam works?
Yes — one practically useful one. In Paper 6, the ion and gas test tables are now provided in the exam, so you no longer need to memorise the full qualitative analysis table. In older papers, that wasn't the case, so don't be thrown off by the difference.
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