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YT 1 minute 47 seconds 95 views Shared 3 days ago Richard Thornley R1.1.2 Energy Transfer: System and Surroundings YT 14 minutes 54 seconds 190 views Shared 2 weeks ago Richard Thornley S3.2.2 Functional groups For IB plus Questions and IMF [SL IB CHEMISTRY] YT 2 minutes 43 seconds 369 views Shared 2 months ago Richard Thornley S2.3.3 Transition metal elements have delocalized d-electrons (mpt & conductivity) [HL IB CHEMISTRY]

YT 3 minutes 10 seconds 205 views Shared 2 months ago Richard Thornley S3.1 Oxidation states of Carbon in CH4 , CH3OH, HCHO, HCOOH, CO2 [SL IB CHEMISTRY] YT 7 minutes 37 seconds 297 views Shared 3 months ago Richard Thornley S2.1 Radical Atoms, Molecules and Ions YT 2 minutes 48 seconds 300 views Shared 4 months ago Richard Thornley S2.2 Do allotropes such as diamond and graphite have different ΔH f⦵ values? [SL IB CHEMISTRY]

YT 3 minutes 30 seconds 329 views Shared 4 months ago Richard Thornley R3.1.2 Conjugate acid-base pairs differ by a single proton [SL IB CHEMISTRY] YT 2 minutes 4 seconds 238 views Shared 4 months ago Richard Thornley R1.2 Why do CFCs break down to release chlorine radicals not fluorine radicals? [SL IB CHEMISTRY] YT 1 minute 25 seconds 284 views Shared 4 months ago Richard Thornley S2.2 Do coordination bonds have different properties from other covalent bonds? [SL IB CHEMISTRY]

YT 4 minutes 42 seconds 314 views Shared 4 months ago Richard Thornley R3.4 Some reactions of alkenes are reduction, others are electrophilic addition [SL IB CHEMISTRY] YT 3 minutes 30 seconds 587 views Shared 4 months ago Richard Thornley R2.1.5 Atom Economy Calculations [SL IB CHEMISTRY] YT 1 minute 19 seconds 2.3K views Shared 5 months ago Richard Thornley Playing with Prompts and Luma Dream Machine AI Video Generator

YT 3 minutes 20 seconds 299 views Shared 5 months ago Richard Thornley R2.2 Why is high activation energy considered to be a useful property of a fuel? [SL IB CHEMISTRY] YT 11 minutes 1 second 1.1K views Shared 5 months ago Richard Thornley S.1.3.6 Limit of Convergence Calculations [HL IB CHEMISTRY] YT 3 minutes 46 seconds 278 views Shared 5 months ago Richard Thornley R2.2 Why are alkanes kinetically stable but thermodynamically unstable? [HL IB CHEMISTRY]

YT 3 minutes 33 seconds 873 views Shared 5 months ago Richard Thornley S1.5.2 Real versus Ideal Gases [SL IB CHEMISTRY] YT 2 minutes 20 seconds 275 views Shared 5 months ago Richard Thornley R.3.4.8 Deduce the charge on a complex ion, given the formula of ion & ligands [HL IB CHEMISTRY] YT 5 minutes 59 seconds 403 views Shared 5 months ago Richard Thornley R2.2 Differences between the energy profiles for SN1 and SN2 reactions [HL IB CHEMISTRY]

YT 1 minute 40 seconds 192 views Shared 7 months ago Richard Thornley Tool 1:08 Measuring Potential Difference (voltage) YT 3 minutes 12 seconds 505 views Shared 7 months ago Richard Thornley R2.2 Why are alkanes kinetically stable but thermodynamically unstable? [SL IB CHEMISTRY] YT 2 minutes 23 seconds 383 views Shared 7 months ago Richard Thornley S3.1 Why are Si-Si bonds generally weaker than C-C bonds? [SL IB CHEMISTRY]

YT 43 seconds 816 views Shared 8 months ago Richard Thornley S1.1 Why does a Perfect Crystal at Zero Kelvin have Zero Entropy ? [HL IB CHEMISTRY] YT 1 minute 32 seconds 287 views Shared 8 months ago Richard Thornley R3.4 Isotopic Tracers and Reaction Mechanisms [HL IB CHEMISTRY] YT 1 minute 24 seconds 343 views Shared 8 months ago Richard Thornley S3.1.5 Reactions with water of the oxides of grp 1/2 metals, carbon and sulfur [SL IB CHEMISTRY]

YT 1 minute 41 seconds 1.7K views Shared 8 months ago Richard Thornley S1.1.1 Can you Identify Atoms, Elements, Molecules, Compounds and Mixtures? [SL IB CHEMISTRY] YT 6 minutes 55 seconds 410 views Shared 8 months ago Richard Thornley R3.4.13 Mechanism of Electrophilic Substitution of Benzene [HL IB Chemistry] YT 42 minutes 22 seconds 1.2K views Shared 9 months ago Richard Thornley Specimen SL Multiple Choice Paper 1A / Model Answers (New syllabus 2025 onwards) [SL IB Chemistry]

YT 3 minutes 10 seconds 551 views Shared 9 months ago Richard Thornley Essential Nucleophilic/Electrophilic/Free Radical Additions and Substitution Reactions ! YT 4 minutes 882 views Shared 11 months ago Richard Thornley S.3.2 What makes a Polymer Biodegradable ? [SL IB CHEMISTRY] YT 10 minutes 46 seconds 2.2K views Shared 11 months ago Richard Thornley S3.2.12 Interpret IR, Mass Spec and H NMR Data in Structural Analysis [HL IB CHEMISTRY]

YT 2 minutes 43 seconds 1K views Shared 11 months ago Richard Thornley R.3.4.2 Nucleophilic Substitution Reactions [SL IB CHEMISTRY] YT 5 minutes 7 seconds 661 views Shared 11 months ago Richard Thornley R.3.4.1 Definition and Recognition of Nucleophiles [HL CHEMISTRY] YT 6 minutes 37 seconds 1.1K views Shared 1 year ago Richard Thornley R1.2.4 Standard Enthalpy of Combustion Calculations [SL old syllabus, HL new]

YT 8 minutes 2.6K views Shared 1 year ago Richard Thornley R1.2.3 Standard Enthalpy Change of Formation and Combustion [HL IB Chemistry 2024] YT 5 minutes 15 seconds 2.2K views Shared 1 year ago Richard Thornley R1.3.5 Three Types of Fuel Cells [SL IB Chemistry] YT 6 minutes 655 views Shared 1 year ago Richard Thornley S3.2 Identification of Primary, Secondary and Tertiary Amines and Amides [SL IB CHEMISTRY]

YT 7 minutes 58 seconds 2.3K views Shared 1 year ago Richard Thornley R3.2.12 Standard Hydrogen Electrode (SHE) [HL IB Chemistry] YT 5 minutes 58 seconds 921 views Shared 1 year ago Richard Thornley S2.4.4 Describe the Common Properties of Plastics in Terms of Their Structure [SL Chemistry] YT 4 minutes 26 seconds 1.5K views Shared 1 year ago Richard Thornley S1.4.5 Converting mol/dm^3 to g/dm^3 [SL IB CHEMISTRY]

YT 4 minutes 48 seconds 1.2K views Shared 1 year ago Richard Thornley S1.4.4 Using Experimental Combustion Data to Calculate Empirical/Molecular Formula [SL IB CHEMISTRY] YT 3 minutes 43 seconds 1.6K views Shared 1 year ago Richard Thornley S2.3.1 Explain the electrical, thermal conductivity & malleability of metals [SL IB Chemistry] YT 2 minutes 11 seconds 4.4K views Shared 1 year ago Richard Thornley S1.3.3 Main energy level, n, has 2n orbitals & holds a maximum 2n^2 electrons. [SL IB CHEMISTRY]

YT 1 minute 12 seconds 1.1K views Shared 1 year ago Richard Thornley R2.2.6 Distinguish between intermediates & transition states in energy profiles [HL IB Chemistry] YT 6 minutes 39 seconds 1.8K views Shared 1 year ago Richard Thornley S1.2.2 Perform calculations involving non-integer RAM and abundance of isotopes [SL IB Chemistry] YT 7 minutes 14 seconds 2.8K views Shared 1 year ago Richard Thornley R2.2.4 The Boltzmann Distribution [SL IB Chemistry]

YT 2 minutes 8 seconds 3.8K views Shared 1 year ago Richard Thornley S1.2.3 Interpretation of Mass Spectra of Isotopes [HL IB CHEMISTRY] YT 45 seconds 4.4K views Shared 1 year ago Richard Thornley S1.3.1 Distinguish between a continuous and a line spectrum [SL IB CHEMISTRY] YT 3 minutes 16 seconds 2.5K views Shared 2 years ago Richard Thornley S1.1.3 Temperature (K), Is A Measure Of Kinetic Energy (C / K Conversion) [SL IB CHEMISTRY]

YT 3 minutes 5 seconds 2.6K views Shared 2 years ago Richard Thornley S1.2.2 What are the Differences in the Physical Properties of Isotopes? [SL IB Chemistry] YT 48 minutes 43 seconds 5.3K views Shared 2 years ago Richard Thornley 2021 May HL paper 1 TZ 1 [IB Chemistry] - solved/answered YT 15 minutes 8 seconds 4.3K views Shared 2 years ago Richard Thornley 2020 Nov SL Paper 3 - not options [IB Chemistry] ANSWERED/SOLVED

YT 8 minutes 29 seconds 26K views Shared 2 years ago Richard Thornley Lab: Back titration to determine the % CaCO3 in eggshell DATA COLLECTION [IB CHEMISTRY] YT 49 minutes 58 seconds 6.3K views Shared 2 years ago Richard Thornley 2020 Nov HL Paper 1 [IB Chemistry] ANSWERED/SOLVED YT 8 minutes 50 seconds 11K views Shared 3 years ago Richard Thornley Lab: Iron Tablet Titration (finding the mass of Fe/pill) DATA COLLECTION

YT 21 seconds 4.1K views Shared 3 years ago Richard Thornley Debulbed incandescent tungsten light in liquid nitrogen YT 12 seconds 714 views Shared 3 years ago Richard Thornley Failure to Launch YT 36 minutes 15 seconds 2.4K views Shared 3 years ago Richard Thornley 2017 May SL Paper 1 TZ2 [IB Chemistry] ANSWERED/SOLVED

YT 31 minutes 9 seconds 3.2K views Shared 3 years ago Richard Thornley 2019 May SL Paper 1 TZ 2 [IB Chemistry] - SOLVED YT 1 minute 49 seconds 1.5K views Shared 3 years ago Richard Thornley Entropy Bombs YT 53 minutes 32 seconds 3.4K views Shared 3 years ago Richard Thornley 2020 Nov HL paper 2 (qu 2-7) [IB Chemistry] ANSWERED/SOLUTIONS