AS Chemistry 9701 Paper 2: Most Repeated Questions, Solved Mark by Mark | CAIE

Most repeated AS Chemistry 9701 Paper 2 questions, past papers solved mark by mark for Cambridge (CAIE) 9701/22 and 9701/23. The night-before, week-before video for Cambridge AS Chemistry (9701) Paper 2. This isn't another topic lesson. It assumes you've done the syllabus and focuses on the one thing that decides your grade now: knowing what to write to get each mark. We go through six real, past Paper 2 questions, part by part. For each one you'll see: ✏️ what the part is really asking: the command word, the marks, the data you've been given 🧠 a quick refresh of the chemistry behind it ✅ the answer written out live, with an examiner's tick on each mark as it's earned ⚠️ where students lose marks, taken from the official mark schemes and Principal Examiner Reports The questions weren't picked at random. We analysed 44 Paper 2 papers (2020–2025) and 1,166 examiner comments to find what comes up again and again: electron configurations, ionisation energies, mechanisms, stereoisomerism, Le Chatelier, enthalpy definitions, IR and mass spectra. Every question in this video tests several of them at once. ⏱️ CHAPTERS 0:00 Intro 0:45 Before you start: paper format, 5 marking rules, command words 4:53 Q1: Ionisation energy, ionic radii, POCl₃ bonding, ΔHf (O/N 2023, 9701/21, Q1) 19:37 Q2: Period 3 oxides, catalysts & atmospheric chemistry (F/M 2022, 9701/22, Q2) 31:33 Q3: Equilibrium, Kp & NOₓ pollution (O/N 2023, 9701/22, Q2) 42:13 Q4: Aldehydes, nucleophilic addition, tests & chirality (F/M 2023, 9701/22, Q3) 56:20 Q5: Alkenes, HBr mechanism & carbocation stability (O/N 2023, 9701/21, Q4) 1:08:00 Q6: Lactones, NaBH₄, IR & M+1 (O/N 2022, 9701/23, Q5) 1:15:50 Wrap-up: the Paper 2 playbook + exam-room rules 📝 Pause before each part and write your own answer, then check it against the mark scheme. This video works best if you try each part first. 🔗 Practise more with AskPapers: an AI grader that marks your answers against the real mark scheme, and an AI tutor for every 9701 topic → https://www.askpapers.com Covers the Cambridge International AS & A Level Chemistry 9701 syllabus (2025–2027), Paper 2: AS Level Structured Questions (60 marks, 1 h 15 min). ⚛️ AS Physics 9702 Paper 2 Masterclass →    • AS Physics 9702 Paper 2: Most Repeated Que...   #9701 #ASChemistry #CAIE #ALevelChemistry #PastPapers #MostRepeatedQuestions AskPapers is not affiliated with or endorsed by Cambridge University Press & Assessment. Past-paper questions are © UCLES and used for educational commentary.