Lesson Walkthroughs

IB DP Chemistry R2.2 L10 | Multistep Mechanisms and the Rate-Determining Step | Lesson Walkthrough

Evaluate multistep reaction mechanisms, identify intermediates and catalysts, and reason about rate-determining steps.

IB DP Chemistry R2.2 L11 | Multistep Energy Profiles and Molecularity | Lesson Walkthrough

Interpret multistep energy profiles, activation barriers and molecularity.

IB DP Chemistry R2.2 L12 | Deducing Rate Equations from Experimental Data | Lesson Walkthrough

Deduce reaction orders and rate equations from experimental initial-rate data.

IB DP Chemistry R2.2 L13 | Reaction Order from Graphs | Lesson Walkthrough

Use rate and concentration-time graphs to identify reaction orders and interpret half-lives.

IB DP Chemistry R2.2 L14 | Rate Constants, Units and Rate-Equation Calculations | Lesson Walkthrough

Calculate rate constants and their units, use rate equations and assess consistency across experimental data.

IB DP Chemistry R2.2 L15 | The Arrhenius Equation | Lesson Walkthrough

Use Arrhenius plots and temperature-dependent rate constants to calculate activation energy.

IB DP Chemistry R2.1 L1 | Chemical Equations as Quantitative Ratio Maps | Lesson Walkthrough

Interpret balanced equations as mole-ratio maps. Students distinguish particle and mole ratios from mass ratios and use coefficients to make quantitative predictions.

IB DP Chemistry R2.1 L2 | Reacting Masses | Lesson Walkthrough

Calculate reacting masses by converting mass to moles, applying a balanced-equation ratio and converting back to mass.

IB DP Chemistry R2.1 L3 | Stoichiometry with Gas Volumes and Solutions | Lesson Walkthrough

Combine gas-volume and solution-concentration data with stoichiometric ratios to calculate unknown reacting quantities.

IB DP Chemistry R2.1 L4 | Limiting and Excess Reactants | Lesson Walkthrough

Identify limiting and excess reactants by comparing available amounts with the balanced-equation ratio.