IB

IB DP Chemistry R2.2 L5 | Why Temperature Changes Rate So Strongly | Lesson Walkthrough

Explain why temperature changes reaction rates, distinguishing collision frequency from the fraction of successful collisions.

IB DP Chemistry R2.2 L6 | Activation Energy and Maxwell–Boltzmann Distributions | Lesson Walkthrough

Construct and interpret Maxwell–Boltzmann energy distributions and explain the role of activation energy.

IB DP Chemistry R2.2 L7 | Catalysts and Alternative Reaction Pathways | Lesson Walkthrough

Compare catalysts and explain alternative reaction pathways with lower activation energies.

IB DP Chemistry R2.2 L8 | Catalysts on Maxwell–Boltzmann Curves | Lesson Walkthrough

Use Maxwell–Boltzmann curves to explain catalysis and challenge common misconceptions.

IB DP Chemistry R2.2 L9 | Kinetics Evidence Lab | Lesson Walkthrough

Plan controlled rate comparisons and build conclusions supported by experimental evidence and particle explanations.

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 R2.1 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.