Chemistry

IB DP Chemistry R2.2 L1 | What Is Reaction Rate and How Can It Be Measured? | Lesson Walkthrough

Measure reaction rates using mass loss and gas volume, compare units and convert measurements to molar rates.

IB DP Chemistry R2.2 L2 | Rates from Graphs | Lesson Walkthrough

Calculate mean and instantaneous rates from graphs using gradients and tangents.

IB DP Chemistry R2.2 L4 | Rate Factors I | Lesson Walkthrough

Investigate concentration, pressure and surface area while identifying and controlling experimental variables.

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

Interpret multistep energy profiles, activation barriers and molecularity.