IGCSE Chemistry 0620 Paper 4 Extended Revision (Part 2) | Oct/Nov 2026 Exam-Style Questions

Sitting Cambridge IGCSE Chemistry 0620 Paper 4 (Extended Theory) this October/November 2026? Part 2 of my Paper 4 revision series: exam-style theory and calculation questions solved step by step, so you learn exactly how to write answers that earn the marks. ▶ Full playlist (all parts, in order):    • IGCSE Chemistry 0620 Paper 4 Extended Revi...   🔔 Subscribe for the next part:    / @nurnabisirigcse   📄 Download the blank revision paper (PDF) and try the questions yourself before watching: https://drive.google.com/file/d/16l-A... In this video I solve questions 4 to 7 of my own Paper 4 revision paper, written in the style of the real Cambridge 0620 Extended theory paper. Topics covered include: Rate of reaction: sketching the curve for powdered marble and explaining the change in rate Mole calculations: moles of carbon dioxide at r.t.p. and the mass of calcium carbonate that reacted Reversible reactions and equilibrium: the effect of temperature, pressure and a catalyst on the equilibrium concentration of NO2 Energetics: calculating the enthalpy change, ΔH, from bond energies Acids and titration: the meaning of a weak acid, titration apparatus and concentration in mol/dm³ and g/dm³ Organic chemistry: cracking decane, testing to distinguish an alkane from an alkene, the conditions for fermentation and naming an ester Every answer is explained clearly, so you understand why it works and how to word it the way examiners expect. Watch the full series: Part 1:    • IGCSE Chemistry 0620 Paper 4 Extended Revi...   Next part coming soon: subscribe so you don't miss it. Who is this for? Cambridge IGCSE Chemistry 0620 Extended students preparing for Paper 4 in the Oct/Nov 2026 session, and anyone revising for the 2027 exams. Teachers and parents can use it as a ready-made revision lesson. It also helps students sitting Edexcel IGCSE Chemistry. Exam tip: In calculation questions, follow the steps the question gives you and write each one down: moles first, then the mass or concentration. Show your working and include the units, because method marks are awarded even if the final answer is wrong. If this helped your revision, please like the video, subscribe to the channel and turn on notifications for the next part. Share it with a friend sitting IGCSE Chemistry, and comment with the topic you want me to cover next. Good luck with your exams! 🌐 Website with all my lessons: https://nurnabisirigcse.nurnabisirigc... 🎓 PRIVATE ONLINE TUITION with Nur Nabi Sir (IGCSE Maths, Physics, Chemistry & Biology) • One-to-One lessons: a personal plan, your own pace, your weak topics fixed. • Small-Batch classes: a small group of serious students, live online, with exam-style practice. Both include past-paper practice, exam technique and doubt clearing. Students and parents worldwide are welcome. 💬 WhatsApp: https://wa.me/966533147491 (+966 53 314 7491) 📩 Email: nurnabisirigcse@gmail.com 🏠 HOME TUITION IN JEDDAH: face-to-face lessons, booked on WhatsApp. Message me for a FREE trial class, and please include your name, subject, exam board, grade and time zone. #IGCSE #IGCSEChemistry #0620 #CambridgeIGCSE #ChemistryRevision