Every Cambridge IGCSE Chemistry Past Paper, Worked Line by Line
Fully worked exam papers and topical past papers with every calculation shown step by step — plus a practice app and video explanations — so your child never loses marks for missing working again.
Watch: a 2-minute tour of the solved past papersWatch on YouTube
Every exam series — nothing missing
2019 →
2026
Every past paper from 2019 right up to the most recent 2026 sessions — fully solved and classified. The latest papers are the ones free sites never post, and they are the truest rehearsal for the exam your child actually sits.
★★★★★
“The calculation answers show every stage, so I could find exactly where I had made a mistake instead of only seeing a final number.”
★★★★★
“The online answer finder is so convenient — I type the session, year and question number and check one answer without scrolling through a whole paper.”
★★★★★
“The explanations go beyond the short official mark scheme and show the chemistry behind the answer. Unfamiliar questions became much easier.”
★★★★★
“Having the same questions organised both topically and as full exams is extremely useful. I learnt each topic, then tested it under exam pressure.”
★★★★★
“The answers include all the marking points and use clear language. They helped me turn what I knew into the exact points needed for the marks.”
★★★★★
“Paper 6 questions are explained clearly, from identifying variables to drawing tables and graphs. I now know how to structure the practical answers.”
★★★★★
“The calculation answers show every stage, so I could find exactly where I had made a mistake instead of only seeing a final number.”
★★★★★
“The online answer finder is so convenient — I type the session, year and question number and check one answer without scrolling through a whole paper.”
★★★★★
“The explanations go beyond the short official mark scheme and show the chemistry behind the answer. Unfamiliar questions became much easier.”
★★★★★
“Having the same questions organised both topically and as full exams is extremely useful. I learnt each topic, then tested it under exam pressure.”
★★★★★
“The answers include all the marking points and use clear language. They helped me turn what I knew into the exact points needed for the marks.”
★★★★★
“Paper 6 questions are explained clearly, from identifying variables to drawing tables and graphs. I now know how to structure the practical answers.”
Meet Your Teacher
Solutions written around the mark scheme — not the textbook
I'm Hosni Showike, and I've spent 21 years teaching IGCSE and A-level Biology and Chemistry. I hold master's degrees in biochemistry and biotechnology from the University of Brussels, an international teaching certificate from the USA, and I currently serve as Head of Science at Nottingham British School. I've authored five science textbooks with more than 20,000 copies sold worldwide.
These solved past papers fix one specific problem: students who understand the topic but still drop marks — because no one showed them the exact wording examiners reward. Every answer is modelled on the mark scheme and examiner reports.
Proof, Not Promises
Real Students. Real Grades.
Verified grade distributions from recent June sessions. Pick a year — the chart draws itself.
69%
A/A* · June 2025
Scored A or A* 69%
Scored B 21%
Scored C 6%
D or below 4%
June 2025 · highest A/A* rate in five years.
The Method
How Every Answer Is Built
Each solution works backwards from the mark scheme and examiner reports — so your child learns the exact wording that earns each mark, then practises it until full marks become routine.
Read the command word
Every question is decoded first — describe, explain, calculate — so you answer what the examiner is actually asking.
Write the mark-scheme points
Model answers show the precise phrasing that scores, point by point — no padding, nothing missed.
Check the examiner insight
Short notes flag the traps that cost most students marks — the ones examiner reports call out year after year.
Practice App Included
Practise by topic or by year — on any device
Every book comes with the Chem-Bio practice app. Your child solves real exam questions, checks the full worked answer, and tracks what they've mastered.
Switch between Topical
and Classified
modes
Choose the topics or the exam years you want to drill
Enter any exam question number and jump straight to the worked answer
Regularly updated with the most recent exam sessions
What's Covered
Exactly What You'll Practise
Every question mapped to the Cambridge IGCSE Chemistry (0620 / 0971) syllabus, across Papers 2, 4 and 6 (including the Alternative to Practical), solved for the 2019–2026 sessions.
The structure foundations the whole syllabus depends on.
States of matter and the particulate nature
Atomic structure and the Periodic Table
Ionic, covalent and metallic bonding
The calculations students dread most — every one worked in full.
Formulae and chemical equations
Mole calculations, concentration and yield
Titration and empirical-formula maths
Method-heavy topics that reward shown working.
Electrolysis and its products
Energetics and reaction profiles
Rates of reaction and reversible reactions
Reaction-pattern questions that recur year after year.
Acids, bases, salts and preparations
Group trends and transition elements
Metals and reactivity
Applied organic plus the Alternative to Practical, solved in full.
Fuels, alkanes, alkenes and alcohols
Polymers and synthetic pathways
Paper 6 apparatus, method, tables and graphs
See Before You Buy
Flip Through Real Pages
Turn the pages of the actual books — every paper is either fully solved or provided as classified topical questions.
Cambridge IGCSE Chemistry — Fully Solved Exams, Paper 6Cambridge IGCSE Chemistry — Classified Past Papers, Paper 4Cambridge IGCSE Chemistry — Most Frequent Questions, Paper 2
Get Access
Get the Solved Past Papers
Instant access after purchase — every solved paper in one place, with two full years to revise at your own pace.
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One-time payment · 2 years full access
Fully solved Papers 2, 4 & 6 (2019–2026)
Every calculation worked line by line with units
Classified topical questions for targeted revision
Solve by topic or by year, enter any question number for the direct answer, and get every new session as it's added.
Bonus
02
Direct WhatsApp Access to Mr Hosni — included free
Ask about any question or answer and get a reply from the teacher directly — never a chatbot or a junior tutor.
Bonus
03
Video Explanations — included free
Watch the trickiest questions worked on screen, step by step, so the method sticks.
The 7-Day, No-Questions-Asked Guarantee
Not satisfied within 7 days of purchase? Contact us and we'll process a full refund — no questions asked. We're confident in these solutions, and we want you to feel completely safe making this decision.
FAQ
Questions? Answered.
A full set of completely worked exam papers plus topical past papers sorted by syllabus area — atomic structure and bonding, moles and stoichiometry, acids and bases, electrolysis, organic chemistry and more. Each question is solved in full and in clear language, so instead of staring at a bare final answer your child sees exactly how it was reached.
Completely different, and this is the heart of what we do. Chemistry calculations lose marks when a step is missing or rushed, so every calculation here is worked line by line — from the balanced equation to the moles to the final figure with correct units — nothing skipped.
Yes, thoroughly. We show each one in full: the equation, the ratio, the concentration or mass calculation, and the rounding, all laid out so the method becomes second nature.
They do. Chemistry is far more repetitive than Biology, and recognising the recurring question types is a genuine advantage. Working through fully solved topical papers, your child learns to spot the patterns and the standard mark-scheme responses, turning repetition into reliable marks.
It lets your child revise in two modes: Topical (choose the topics to drill) and Classified (choose exam years). They can also enter any exam question number and jump straight to the worked answer. It is updated regularly with the most recent sessions.
Yes — the extended theory paper and the Alternative to Practical (Paper 6) are both covered, with experiment and data questions solved as carefully as the calculations. You get every series from 2019 to the latest 2026 sessions, added automatically, with two full years of access.
Your A* in Cambridge IGCSE Chemistry Starts Here
Every past paper from 2019 to 2026, solved and classified, with the practice app and model answers built around exactly what examiners reward.
