Enthalpy Changes & Calorimetry | IAL Chemistry | Cambridge 9701 · Edexcel YCH11 · OxfordAQA 9620

Enthalpy changes and calorimetry for International A Level Chemistry (AS): what enthalpy and ΔH are, exothermic and endothermic reactions, reaction pathway diagrams with activation energy, standard conditions, the standard enthalpy changes of reaction, formation, combustion and neutralisation, and calculating ΔH from experiments with q = mcΔT and ΔH = −mcΔT/n (three worked examples). 📝 Cambridge 9701 notes: Chemical energetics (AS) (free): https://www.thinka.ai/en-GB/Cambridge... 📱 Thinka app: practice questions and notes: https://www.thinka.ai/en-GB/download?... AI tutor Emma teaches from the Thinka notes, one step at a time, with every working line shown. A Board Check shows what differs between Cambridge 9701, Edexcel IAL Chemistry (Unit 2) and OxfordAQA 9620 (Unit 1). ⏱️ Chapters 0:00 Intro, why it matters and key terms 2:09 What is enthalpy? System and surroundings 3:27 Exothermic and endothermic reactions 5:19 Reaction pathway diagrams and activation energy 7:36 Standard conditions 8:42 Standard enthalpy changes: reaction, formation, combustion, neutralisation 12:34 Calorimetry: q = mcΔT 14:30 Calculating ΔH: three worked examples 24:14 Board Check: Cambridge, Edexcel, OxfordAQA 26:02 Exam tips 28:02 Recap 🔗 Study resources 📝 Cambridge 9701 notes: Chemical energetics (AS) (free): https://www.thinka.ai/en-GB/Cambridge... 📝 Edexcel YCH11 notes: Energetics: https://www.thinka.ai/en-GB/Pearson-E... 📝 OxfordAQA 9620 notes: 3.1.4 Energetics (AS): https://www.thinka.ai/en-GB/Oxford-AQ... 📊 Cambridge 9701 past paper analysis (June 2026): https://www.thinka.ai/en-GB/past-pape... 📊 Edexcel YCH11 past paper analysis (January 2026): https://www.thinka.ai/en-GB/past-pape... 📊 OxfordAQA 9620 past paper analysis (June 2025): https://www.thinka.ai/en-GB/past-pape... ✍️ Cambridge 9701 practice paper with answers: https://www.thinka.ai/en-GB/past-pape... 📚 More 📖 All Cambridge 9701 Chemistry notes: https://www.thinka.ai/en-GB/Cambridge... ▶️ Playlist: A Level Chemistry Video Course | Cambridge 9701 · Edexcel IAL · OxfordAQA 9620 →    • A Level Chemistry Video Course | Cambridge...   🤖 About this video Emma is an AI tutor: her image and voice are AI-generated. The lesson follows Thinka's study notes and does not reproduce any exam board's past-paper questions. #ALevelChemistry #Enthalpy #ALevel