Lesson Walkthroughs

IB DP Chemistry R2.1 L5 | Theoretical Yield from the Limiting Reactant | Lesson Walkthrough

Calculate theoretical yield from the limiting reactant using mixed forms of quantitative data.

IB DP Chemistry R2.1 L6 | Experimental Yield and Percentage Yield | Lesson Walkthrough

Compare experimental and theoretical yields and calculate percentage yield. Students explain practical losses and investigate values above 100 percent.

IB DP Chemistry R2.1 L7 | Atom Economy | Lesson Walkthrough

Calculate atom economy and compare reaction routes. Students distinguish atom economy from percentage yield and evaluate inherent chemical waste.

IB DP Chemistry R1.3 L3 | Biofuels, Renewable Carbon and the Limits of Carbon Neutrality | Lesson Walkthrough

Evaluate carbon-neutrality claims for biofuels by comparing chemical equations with the wider production and use cycle. Students examine system boundaries and distinguish renewable carbon from zero net emissions.

IB DP Chemistry R1.3 L4 | Fuel Cells | Lesson Walkthrough

Explore how hydrogen and oxygen can produce electrical energy in a fuel cell. Students trace the electrochemical processes, write equations and connect cell design with its energy conversion.

IB DP Chemistry R1.4 L1 | Entropy as Dispersal of Matter and Energy | Lesson Walkthrough

Build a particle-level interpretation of entropy through the dispersal of matter and energy. Students compare possible arrangements and make qualitative predictions about entropy changes.

IB DP Chemistry R1.4 L2 | Calculating Standard Entropy Changes | Lesson Walkthrough

Calculate standard entropy changes from tabulated data. Students predict a sign and approximate scale first, then check stoichiometric coefficients, units and the physical interpretation of the result.

IB DP Chemistry R1.4 L3 | Gibbs Energy | Lesson Walkthrough

Combine enthalpy, entropy and temperature through the Gibbs energy equation. Students calculate energy changes with consistent units and explain how the terms determine thermodynamic favourability.

IB DP Chemistry R1.4 L4 | Spontaneity and the Temperature at Which Direction Changes | Lesson Walkthrough

Use Gibbs energy to investigate how thermodynamic favourability changes with temperature. Students interpret graphs, compare sign combinations and calculate threshold temperatures.

IB DP Chemistry R1.4 L5 | Gibbs Energy, Reaction Quotient and Equilibrium | Lesson Walkthrough

Distinguish standard Gibbs energy from Gibbs energy under current conditions. Students connect reaction quotient, equilibrium constant and energy changes to predict direction and interpret equilibrium.