11:01

S.1.3.6 Limit of Convergence Calculations [HL IB CHEMISTRY]

03:46

R2.2 Why are alkanes kinetically stable but thermodynamically unstable? [HL IB CHEMISTRY]

03:33

S1.5.2 Real versus Ideal Gases [SL IB CHEMISTRY]

02:20

R.3.4.8 Deduce the charge on a complex ion, given the formula of ion & ligands [HL IB CHEMISTRY]

05:59

R2.2 Differences between the energy profiles for SN1 and SN2 reactions [HL IB CHEMISTRY]

01:40

Tool 1:08 Measuring Potential Difference (voltage)

03:12

R2.2 Why are alkanes kinetically stable but thermodynamically unstable? [SL IB CHEMISTRY]

02:23

S3.1 Why are Si-Si bonds generally weaker than C-C bonds? [SL IB CHEMISTRY]

00:43

S1.1 Why does a Perfect Crystal at Zero Kelvin have Zero Entropy ? [HL IB CHEMISTRY]

01:32

R3.4 Isotopic Tracers and Reaction Mechanisms [HL IB CHEMISTRY]

01:24

S3.1.5 Reactions with water of the oxides of grp 1/2 metals, carbon and sulfur [SL IB CHEMISTRY]

01:41

S1.1.1 Can you Identify Atoms, Elements, Molecules, Compounds and Mixtures? [SL IB CHEMISTRY]

06:55

R3.4.13 Mechanism of Electrophilic Substitution of Benzene [HL IB Chemistry]

42:22

Specimen SL Multiple Choice Paper 1A / Model Answers (New syllabus 2025 onwards) [SL IB Chemistry]

03:10

Essential Nucleophilic/Electrophilic/Free Radical Additions and Substitution Reactions !

04:00

S.3.2 What makes a Polymer Biodegradable ? [SL IB CHEMISTRY]

10:46

S3.2.12 Interpret IR, Mass Spec and H NMR Data in Structural Analysis [HL IB CHEMISTRY]

02:43

R.3.4.2 Nucleophilic Substitution Reactions [SL IB CHEMISTRY]

05:07

R.3.4.1 Definition and Recognition of Nucleophiles [HL CHEMISTRY]

06:37

R1.2.4/5.1 Standard Enthalpy of Combustion Calculations [SL old syllabus, HL new]

08:00

R1.2.3/5.1 Standard Enthalpy Change of Formation and Combustion [HL IB Chemistry 2024]

05:15

R1.3.5 Three Types of Fuel Cells [SL IB Chemistry]

06:00

S3.2 Identification of Primary, Secondary and Tertiary Amines and Amides [SL IB CHEMISTRY]

07:58

19.1 / R3.2.12 Standard Hydrogen Electrode (SHE) [HL IB Chemistry]

05:58

S2.4.4 Describe the Common Properties of Plastics in Terms of Their Structure [SL Chemistry]

04:26

S1.4.5 Converting mol/dm^3 to g/dm^3 [SL IB CHEMISTRY]

04:48

S1.4.4 Using Experimental Combustion Data to Calculate Empirical/Molecular Formula [SL IB CHEMISTRY]

03:43

S2.3.1 Explain the electrical, thermal conductivity & malleability of metals [SL IB Chemistry]

02:11

2.2/S1.3.3 Main energy level, n, has 2n orbitals & holds a maximum 2n^2 electrons. [SL IB CHEMISTRY]

01:12

R2.2.6 Distinguish between intermediates & transition states in energy profiles [HL IB Chemistry]

06:39

S 1.2.2 Perform calculations involving non-integer RAM and abundance of isotopes [SL IB Chemistry]

07:14

R2.2.4/5 The Boltzmann Distribution [SL IB Chemistry]

02:08

S1.2.3 Interpretation of Mass Spectra of Isotopes [HL IB CHEMISTRY]

00:45

S1.3.1 Distinguish between a continuous and a line spectrum [SL IB CHEMISTRY]

03:16

S1.1.3 Temperature (K), Is A Measure Of Kinetic Energy (C / K Conversion) [SL IB CHEMISTRY]

03:05

S1.2.2 What are the Differences in the Physical Properties of Isotopes? [SL IB Chemistry]

48:43

2021 May HL paper 1 TZ 1 [IB Chemistry] - solved/answered

15:08

2020 Nov SL Paper 3 - not options [IB Chemistry] ANSWERED/SOLVED

08:29

Lab: Back titration to determine the % CaCO3 in eggshell DATA COLLECTION [IB CHEMISTRY]

49:58

2020 Nov HL Paper 1 [IB Chemistry] ANSWERED/SOLVED

08:50

Lab: Iron Tablet Titration (finding the mass of Fe/pill) DATA COLLECTION

00:21

Debulbed incandescent tungsten light in liquid nitrogen

00:12

Failure to Launch

36:15

2017 May SL Paper 1 TZ2 [IB Chemistry] ANSWERED/SOLVED

31:09

2019 May SL Paper 1 TZ 2 [IB Chemistry] - SOLVED

01:49

Entropy Bombs

53:32

2020 Nov HL paper 2 (qu 2-7) [IB Chemistry] ANSWERED/SOLUTIONS

34:56

2020 Nov HL paper 2 Qu 1 [IB Chemistry] - SOLUTIONS/ANSWERED

46:50

2020 Nov SL paper 2 [IB Chemistry] - SOLUTIONS/ANSWERED

36:29

2020 Nov SL paper 1 [IB Chemistry] ANSWERED

01:05

What links methane to an ancient weapon?

01:36

Tested by a Science Teacher: Timson UV -LiteDry for Shoes

56:26

2017 May HL paper 2 TZ1 qu 4-8 [IB Chemistry] SOLUTIONS

39:18

2017 May HL paper 2 TZ1 qu 1,2,3 [IB Chemistry] SOLUTIONS

50:10

2017 May HL paper 1 TZ1 [IB Chemistry] ANSWERED/SOLUTIONS/SOLVED

02:40

S2.2.12 Why only 3 Isomers of Dibromobenzene? [HL IB CHEMISTRY]

42:40

2018 May SL paper 1 TZ2 [IB Chemistry] ANSWERED/SOLUTIONS/SOLVED

10:17

12 Ali Express science toys for use in the classroom

10:42

R1.2.5 Born-Haber Cycle - Calcium Oxide (Gmod)

44:40

2018 May SL paper 1 TZ1 [IB Chemistry] ANSWERED/SOLUTIONS/SOLVED