Chemistry topicals
IGCSE 0620 · 12 topics · 3,200 questions
Cambridge IGCSE & O Level · Free
Your Cambridge revision, organised.
Topicals, past papers, theory and interactive study tools for O Level and IGCSE students. Real Cambridge questions, sorted by topic, with mark schemes.
- 57 topicals live
- 3,911 past papers
- 13 interactive tools
Built by Huzaifa Hassan & Noor, O Level & IGCSE teachers at The Benchmark Academy.
Huzaifa & Noor · Founders of Zainora · Teachers at The Benchmark Academy · Study with them →
Study by subject
Pick your subject.
11 with resources · 4 comingOne click opens everything Zainora has for that subject: topicals, past papers, theory and tools, with every topic listed underneath.
Available
Chemistry
IGCSE 0620 · O Level 5070
Particles, bonding, moles, energetics, organic chemistry and the practical paper.
643 resourcesOpen
Available
Physics
IGCSE 0625 · O Level 5054
Motion, forces, thermal physics, waves, electricity, nuclear and space physics.
493 resourcesOpen
Available
Biology
IGCSE 0610 · O Level 5090
Cells, organisation, transport, respiration, inheritance and ecology.
506 resourcesOpen
Available
Mathematics
IGCSE 0580 · IGCSE 0607 · O Level 4024
Number, algebra, geometry, trigonometry, statistics and probability.
767 resourcesOpen
Available
Additional Mathematics
IGCSE 0606 · O Level 4037
Functions, calculus, vectors, series and the harder end of algebra.
166 resourcesOpen
Available
Computer Science
IGCSE 0478 · O Level 2210
Data representation, networks, hardware, algorithms, programming and databases.
162 resourcesOpen
Available
Business
IGCSE 0450 · O Level 7115
Business activity, people, marketing, operations and finance.
6 resourcesOpen
Available
English
IGCSE 0500 · IGCSE 0510 · IGCSE 0511 · O Level 1123
Reading, directed writing, composition and language analysis.
718 resourcesOpen
Available
Urdu
IGCSE 0539 · O Level 3247 · O Level 3248
Composition, comprehension and translation for first and second language.
28 resourcesOpen
Available
Islamiyat
IGCSE 0493 · O Level 2058
Qur'an, Hadith, the life of the Prophet, the Caliphs and the pillars of Islam.
112 resourcesOpen
Available
Pakistan Studies
IGCSE 0448 · O Level 2059
History and culture of Pakistan, and the environment of Pakistan.
58 resourcesOpen
Coming soon
- EconomicsIGCSE 0455 · O Level 2281
- AccountingIGCSE 0452 · O Level 7707
- GeographyIGCSE 0460 · O Level 2217
- HistoryIGCSE 0470 · O Level 2147
4 subjects are mapped and waiting for their first resources.
Topicals
Every Cambridge question. Organised by topic.
Stop searching through years of papers. Practise exactly the topic you are struggling with: every past question on that chapter, with its mark scheme, in one place.
13,050 questions · 57 topicals · Cambridge past papers 2004–2026
All topics
Physics topicals
IGCSE 0625 · 6 topics · 4,959 questions
Biology topicals
IGCSE 0610 · 21 topics · 4,891 questions
Topicals coming next: Mathematics Additional Mathematics Economics Accounting Urdu
Past papers
Find the exact paper you need in seconds.
Question papers, mark schemes and inserts, labelled the way Cambridge prints them: 0620/42/M/J/25. Filter by subject, year, session and paper, open it in the browser, download if you want.
3,911 papers · 10 subjects · 2010–2026
- EnEnglish0510 · 0511 · 0500 · 0993 · 0990 · 1123826 papers
- MaMathematics0607 · 0580 · 0980 · 4024785 papers
- ChChemistry0620 · 5070631 papers
- BiBiology0610 · 0970 · 5090620 papers
- PhPhysics0625 · 5054487 papers
- CSComputer Science0478 · 0984 · 2210198 papers
- AMAdditional Mathematics0606 · 4037166 papers
- IsIslamiyat0493 · 2058112 papers
- PSPakistan Studies0448 · 205958 papers
- UrUrdu0539 · 3247 · 324828 papers
Study tools
An expanding toolkit.
13 live · 9 in developmentInteractive tools that sit beside the questions: the Cambridge Periodic Table, virtual labs for the practicals you cannot repeat at home, and a timer for focused sessions. New tools are only marked available once they actually work.
StudyAvailable
Digital teaching board
Open a PowerPoint from your device and teach from it: ink on every slide, spotlight, curtain, timer, wheel of names and quick polls. Nothing is uploaded; everything stays in your browser.
StudyAvailable
Final 8 Days
Pakistan Studies and Islamiyat, Oct/Nov 2026: the last eight days before the papers, one card a day, with the daily Surah and Hadith writing. Opens on today.
StudyAvailable
Final Days · IGCSE & O Level
Maths, English, Chemistry, Physics, Biology and Computer Science, Oct/Nov 2026: pick what you sit and get a day-by-day plan from the real dates, rebuilt every morning, linked to the banks and past papers.
StudyAvailable
Study timer
Focused sessions with short breaks. Runs in your browser, no account needed.
Who made this
Built by teachers, for students.
- Huzaifa & Noor
- O Level & IGCSE teachers
- Founders of Zainora
- Teachers at The Benchmark Academy
We teach these exams every week. We built Zainora because our students were losing hours hunting through scattered past papers and half-labelled resources, so we sorted every Cambridge question by topic, labelled every paper the way the exam board does, and put it all in one place. It is the site we wished our own students had.
New intakes · September & October 2026
Study with Huzaifa & Noor.
Zainora is free and always will be. If you want the two of us in the room as well, classes for the May/June 2027 CAIEs begin on 25 September (Pakistan Studies & Islamiyat) and 5 October 2026 (Physics): face-to-face at Harley Street Campus, Rawalpindi, or live online anywhere in Pakistan.
Huzaifa Hassan
Pakistan Studies & Islamiyat
2059 / 0448 · 2058 / 0493
Both subjects taught together, from scratch, with weekly past-paper tests marked to the Cambridge levels and every script returned.
- Begins
- 25 September 2026
- Fee
- Rs 30,000 / month for both subjects
- Note
- One-time Rs 5,000 registration covers notes, tests and materials.
Noor
Physics
5054 / 0625
Concept first, then paper technique: every topic built from the basics, every session ending on real Cambridge questions.
- Begins
- 5 October 2026
- Fee
- Fees shared on WhatsApp
- Note
- Sibling discounts available.
“It's been around four years that I have studied from Sir Huzaifa. He is the only one who understands that not every student is the same and every student requires attention.”
“Sir, nothing, just thanks for everything, be it notes or your unique lectures. During my paper, your voice was echoing in my ear.”
“Love you sir. You might not remember, but last year I only passed because of you and I'll forever be grateful.”
Or call 0303 5046085 / 0306 8873886. Classes run at The Benchmark Academy, where both of us teach. No application fee.
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Choose a subject and start practising.
Free, no sign-up needed. Real Cambridge questions, organised by topic, with mark schemes.
Founded by Huzaifa Hassan & Noor ·
Teachers at The Benchmark Academy