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R2.2 Maxwell-Boltzmann Distribution Curves (IBDP Chemistry)

R2.2 Maxwell-Boltzmann Distribution Curves (IBDP Chemistry)

Subject: Chemistry

Age range: 16+

Resource type: Lesson (complete)

Last updated

10 May 2026

pptx, 2.77 MB
pptx, 2.77 MB

This PowerPoint lesson covers Maxwell–Boltzmann distribution curves for IBDP Chemistry (first examination 2025) and helps students explain reaction rate in terms of particle energy, activation energy and successful collisions. It provides a clear, visual introduction to one of the most important kinetic models in the course, making it ideal for both first teaching and revision.

A Maxwell–Boltzmann distribution curve is a statistical model showing how the energies of particles are distributed in a sample. In chemistry, it is used to explain why only some collisions lead to reaction: particles must collide with energy equal to or greater than the activation energy, Ea. This lesson helps students understand how temperature changes the shape of the curve, how a catalyst affects the activation energy line, and why these changes alter the probability of successful collisions.

This fully editable PowerPoint (.pptx) is designed for IBDP Chemistry and supports both conceptual understanding and exam performance. The lesson begins with retrieval starter questions before introducing key vocabulary such as transition state, activation energy and Maxwell–Boltzmann distribution curve. Students are then guided through the features of the curve, the meaning of the area under the curve, and the significance of the shaded region to the right of Ea. The resource also explains energy profile diagrams for exothermic and endothermic reactions, including the effect of catalysts and why catalysts lower Ea without changing ΔH.

The lesson includes clear explanations, visual modelling, mini whiteboard checks, and practice questions with answers. It is especially useful for helping students connect collision theory, temperature and catalysis in a more mathematical and graphical way.

File type included: editable PowerPoint (.pptx)
Last updated: 2026 – improved graph explanations, clearer catalyst comparisons, and enhanced practice questions aligned to IB assessment objectives.

Get this resource as part of a bundle and save up to 33%

A bundle is a package of resources grouped together to teach a particular topic, or a series of lessons, in one place.

Bundle

BUNDLE R2 How Much, How Fast and How Far? SL Content Only (IBDP Chemistry)

This bundle of PowerPoints covers IBDP Chemistry SL R2: How Much, How Fast and How Far? for first examination 2025, bringing together quantitative chemistry, kinetics and equilibrium in one structured teaching resource. It is designed to help students build secure understanding across the whole SL R2 topic, from writing equations and calculating yields to explaining reaction rates and predicting equilibrium changes. In IBDP Chemistry, this area of the course focuses on three linked ideas: how much chemical change occurs, how fast it happens, and how far a reversible reaction proceeds before reaching equilibrium. This bundle supports students in mastering those ideas step by step. The lessons move from stoichiometry and reacting ratios, through collision theory and Maxwell–Boltzmann distributions, to physical and chemical equilibrium, Kc and Le Châtelier’s principle. This makes the bundle ideal for teaching the full SL R2 topic in a coherent sequence rather than as isolated lessons. The bundle includes 11 editable PowerPoint (.pptx) lessons: R2.1 Chemical Equations, Reacting Ratios, Limiting and Excess Reactants, Theoretical and Percentage Yield, and Atom Economy. R2.2 Rate of Reaction, Factors Affecting the Rate of Reaction, and Maxwell–Boltzmann Distribution Curves. R2.3 Physical Equilibrium, Chemical Equilibrium, The Equilibrium Constant Kc and Magnitude of Kc, and Le Châtelier’s Principle. Across the bundle, students are supported with retrieval starters, key word definitions, worked examples, calculations, graph interpretation, particle-level explanations, and practice questions with answers. The resources are suitable for first teaching, revision, cover lessons or flipped learning, and they align closely with the IBDP Chemistry specification for first examination 2025. File types included: editable PowerPoint (.pptx) files. Last updated: 2026 – refined lesson sequencing, improved clarity of calculations and explanations, and enhanced practice tasks across stoichiometry, kinetics and equilibrium.

£14.80
Bundle

BUNDLE R2.2 How Fast? The Rate of Chemical Change, SL Content Only (IBDP Chemistry)

This bundle of PowerPoints covers IBDP Chemistry SL R2.2 How Fast? The Rate of Chemical Change for first examination 2025, helping students understand how reaction rates are measured, explained and modelled. It provides a clear, well-sequenced set of lessons that build from experimental methods and graph skills to collision theory and Maxwell–Boltzmann distributions. The rate of chemical change describes how quickly reactants are used up or products are formed in a chemical reaction. In this bundle, students learn how reaction rate can be monitored indirectly by following changes in mass, gas volume, colour, conductivity, precipitate formation or clock reactions, and how rates can be determined from the gradient of graphs, including initial rate and instantaneous rate calculations using tangents. This gives students a strong practical and mathematical foundation for the topic. The bundle includes 3 editable PowerPoint (.pptx) lessons. Lesson 1: The Rate of Reaction introduces how rate is measured experimentally and how graphs are used to calculate rates. Lesson 2: Factors Affecting the Rate of Reaction explains collision theory and the effects of temperature, concentration, pressure, surface area and catalysts on the frequency of successful collisions. Lesson 3: Maxwell–Boltzmann Distribution Curves develops this further by showing how particle energies are distributed, how temperature changes the proportion of particles with energy greater than Ea, and how catalysts lower activation energy without changing ΔH. Across the bundle, students are supported with retrieval starters, clear keyword definitions, worked explanations, graph interpretation, particle-level models and practice questions with answers. This makes the resource ideal for first teaching, revision, or building a complete SL kinetics sequence for IB Chemistry. File types included: editable PowerPoint (.pptx) files. Last updated: 2026 – improved sequencing, clearer graph and collision theory explanations, and enhanced practice tasks aligned to the IB Chemistry specification for first examination 2025.

£4.00

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