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R2.1 Atom Economy (IBDP Chemistry)

R2.1 Atom Economy (IBDP Chemistry)

Subject: Chemistry

Age range: 16+

Resource type: Lesson (complete)

Last updated

10 May 2026

pptx, 4.51 MB
pptx, 4.51 MB

This PowerPoint lesson covers atom economy for IBDP Chemistry (first examination 2025), including calculations, reaction efficiency and links to green chemistry. It provides a clear, structured approach to understanding how chemists evaluate and improve industrial processes.

Atom economy is a measure of reaction efficiency that compares the total mass of reactants that ends up in the desired product, expressed as a percentage. A high atom economy means that most atoms from the reactants are incorporated into the useful product, while a low atom economy indicates that more atoms are wasted as by-products . This concept complements percentage yield by focusing on reaction design rather than experimental success.

This fully editable PowerPoint (.pptx) is designed for IB Diploma Chemistry and is suitable for both teaching and revision. The lesson begins with a retrieval starter linking to limiting reactants and percentage yield, before introducing key terminology such as by-products, green chemistry and conservation of mass. Students are guided through how to calculate atom economy using balanced equations and how to interpret values in terms of efficiency and sustainability .

The resource includes:
• Retrieval starter activity reviewing yield concepts
• Clear definitions of key terms (atom economy, by-products, green chemistry)
• Explanation of the formula for calculating atom economy
• Comparison between atom economy and percentage yield
• Discussion of the inverse relationship between atom economy and waste
• Real-world and industrial context (cost, environmental impact, sustainability)
• Exploration of useful vs waste by-products
• Links to green chemistry principles and catalysts
• Practice questions with answers for consolidation

This lesson is ideal for helping students evaluate chemical processes and apply their understanding to exam-style questions involving efficiency, sustainability and industrial chemistry.

File type included:
• Editable PowerPoint (.pptx)

Last updated: 2026 – improved clarity of calculation methods, added real-world industrial examples, 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 R2.1 How Much? The Amount of Chemical Change (IBDP Chemistry)

This bundle of PowerPoints covers R2.1 How much? The amount of chemical change for IBDP Chemistry (first examination 2025), including equations, stoichiometry, yield and atom economy. It provides a complete, structured sequence of lessons to build strong quantitative chemistry skills from foundational concepts to exam-level problem solving. The amount of chemical change refers to how chemists measure and calculate the quantities of reactants and products involved in reactions. Using balanced chemical equations and mole ratios, students can predict how much product will form and evaluate how efficient a reaction is. This bundle supports students in mastering these essential stoichiometric relationships and applying them in both theoretical and practical contexts . This fully editable bundle includes 4 PowerPoint (.pptx) lessons, designed for IB Diploma teaching and revision. The lessons are carefully sequenced to build understanding progressively: starting with writing and balancing equations, moving into reacting ratios and mole calculations, then developing into limiting reactants and yield, and finally evaluating efficiency through atom economy . The bundle includes: • Lesson 1: Chemical Equations – writing, balancing, state symbols and equilibrium • Lesson 2: Reacting Ratios – mole ratios, stoichiometry and calculations • Lesson 3: Limiting & Excess Reactants, Yield – theoretical, experimental and percentage yield • Lesson 4: Atom Economy – efficiency, waste and green chemistry Across the lessons, you will find: • Retrieval starter activities and key definitions • Step-by-step calculation methods and worked examples • Real-world analogies (e.g. pancake model) to support understanding • Links to industrial processes, sustainability and green chemistry • Practice questions with answers for consolidation This bundle is ideal for teaching the full R2.1 topic or for structured revision, helping students develop confidence in quantitative chemistry and prepare effectively for IB exam questions. File types included: • 4 editable PowerPoint (.pptx) files Last updated: 2026 – improved lesson sequencing, enhanced worked examples, and added practice questions aligned to IB assessment objectives.

£5.35

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