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R1.3 Biofuels (IBDP Chemistry)

R1.3 Biofuels (IBDP Chemistry)

Subject: Chemistry

Age range: 16+

Resource type: Lesson (complete)

Last updated

15 May 2026

pptx, 2 MB
pptx, 2 MB

This PowerPoint lesson explores biofuels, photosynthesis and renewable energy, helping IBDP Chemistry students connect combustion chemistry to global sustainability. Designed for first assessment 2025, it develops understanding of renewable vs non-renewable resources and evaluates the advantages and limitations of biofuels using chemical principles.

A biofuel is defined as a fuel derived directly from living matter. This lesson begins by summarising the overall equation for photosynthesis (6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂) and explains how solar energy is converted into chemical energy stored in glucose, cellulose, starch and lipids. Students learn how this stored chemical energy forms the basis of bioethanol and biodiesel production.

Clear comparisons are made between renewable and non-renewable energy sources, including fossil fuels and enriched uranium. The production of bioethanol by fermentation and biodiesel by transesterification is outlined with balanced equations, reinforcing organic chemistry links. The concept of a partially carbon-neutral cycle is analysed, showing how CO₂ released during combustion may be offset by CO₂ absorbed during plant growth.

Advantages and disadvantages are evaluated in depth, including land use, food security, fossil fuel inputs, emission profiles and energy efficiency. Students compare combustion cleanliness of short-chain biofuels with longer-chain fossil fuels and consider the international context of biofuel production.

Starter activities, structured explanations, reaction equations, data discussion and exam-style practice questions are included.

File type included: PowerPoint (.pptx)
Last updated: January 2026 – sustainability analysis expanded and reaction equations refined in line with the 2025 IB Chemistry syllabus.

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 R1 What Drives Chemical Reactions? SL & HL (IBDP Chemistry)

This bundle of PowerPoints covers IBDP Chemistry R1: What drives chemical reactions? for first examination 2025, including both SL and HL content across energy transfer, enthalpy changes, fuels, entropy and Gibbs energy. It is designed to give teachers and students a complete, well-sequenced set of lessons for teaching the full R1 topic from core foundations through to Higher Level thermodynamics. In IBDP Chemistry, this topic explores the energetic and thermodynamic ideas that explain why reactions happen and whether they are feasible. Students begin with the basics of energy transfer in chemical reactions, including conservation of energy, system and surroundings, exothermic and endothermic processes, and calorimetry. They then move into bond breaking and forming, Hess’s law, and HL extensions such as standard enthalpy changes of combustion and formation and Born–Haber cycles. The topic also connects chemistry to real-world energy use through lessons on combustion reactions, incomplete combustion, fossil fuels, biofuels and fuel cells. The bundle also includes the full HL R1.4 section on entropy and spontaneity, helping students understand how disorder, enthalpy and temperature combine to determine whether a process is spontaneous. These lessons cover entropy, Gibbs energy and spontaneous changes, and Gibbs energy and equilibrium, making the resource especially useful for deeper HL teaching and revision. This fully editable bundle includes 15 PowerPoint (.pptx) lessons with retrieval starters, key word definitions, clear explanations, worked examples, calculation practice and questions with answers. It is ideal for first teaching, revision, cover lessons or building a full unit sequence aligned to the IBDP Chemistry specification for first examination 2025. File types included: editable PowerPoint (.pptx) files. Last updated: 2026 – improved sequencing, refined explanations, and enhanced practice tasks across SL and HL energetics and thermodynamics content.

£20.00
Bundle

BUNDLE R1 What Drives Chemical Reactions? SL Content Only (IBDP Chemistry)

This bundle of PowerPoints covers the SL content of R1: What drives chemical reactions? for IBDP Chemistry (first examination 2025), bringing together energy transfer, enthalpy changes, bond enthalpies, Hess’s law and fuels in one carefully structured resource. It is designed to help students understand why chemical reactions happen, how energy changes can be measured, and how these ideas connect to real-world fuel use and sustainability. In IBDP Chemistry, this topic explores the energetic factors that drive reactions forward. Students begin by learning about energy transfer in chemical reactions, including the law of conservation of energy, system and surroundings, and the difference between heat and temperature. They then move on to exothermic and endothermic reactions, calorimetry and enthalpy change calculations, before developing their understanding of bond breaking and bond forming and using Hess’s law to determine enthalpy changes indirectly. The topic finishes with the chemistry of fuels, including combustion reactions, incomplete combustion, fossil fuels, biofuels and fuel cells, helping students connect core energetics ideas to industrial, environmental and sustainability contexts. This fully editable bundle includes 10 PowerPoint (.pptx) lessons: R1.1 Energy Transfer in Chemical Reactions, Exothermic and Endothermic Reactions, and Enthalpy and Heat Transfers. R1.2 Bond Breaking and Forming (SL) and Hess’s Law (SL). R1.3 Combustion Reactions, Incomplete Combustion of Organic Compounds, Fossil Fuels, Biofuels, and Fuel Cells. Across the bundle, students are supported with retrieval starters, key word definitions, clear explanations, worked examples, calculation practice and questions with answers. These lessons are ideal for first teaching, revision, cover work or building a full SL energetics sequence aligned to the IBDP Chemistry specification for first examination 2025. File types included: editable PowerPoint (.pptx) files. Last updated: 2026 – improved lesson sequencing, refined explanations and enhanced practice tasks across energetics, bond enthalpy and fuels content.

£13.50
Bundle

BUNDLE R1.3 Energy from Fuels (IBDP Chemistry)

This comprehensive lesson bundle covers R1.3 Energy from Fuels for IBDP Chemistry (first examination 2025), including combustion, fossil fuels, biofuels and fuel cells. It provides a clear, structured sequence of lessons to help students understand how chemical energy is released, transferred and evaluated in real-world contexts. Energy from fuels focuses on how substances react with oxygen to release energy and how different fuels can be compared in terms of efficiency, sustainability and environmental impact. Combustion is a highly exothermic reaction where fuels react with oxygen to form more stable products such as carbon dioxide and water, releasing significant amounts of energy . This bundle supports students in understanding both the chemistry and the global implications of energy use. This resource includes 5 fully editable PowerPoint (.pptx) lessons designed for classroom teaching, revision or flipped learning: • Combustion reactions, including hydrocarbons, alcohols and metals • Complete vs incomplete combustion, with equations and real-world hazards such as carbon monoxide • Fossil fuels, including energy content, CO₂ emissions and the greenhouse effect • Biofuels, including photosynthesis, sustainability and carbon neutrality • Fuel cells, including hydrogen and methanol systems with half-equations and energy efficiency Each lesson includes retrieval starters, key definitions, worked examples, application questions and exam-style practice tasks. Students are guided through balancing combustion equations, comparing fuels quantitatively, and linking chemistry to global challenges such as climate change and energy security. Ideal for IB teachers, this bundle is fully aligned to the latest specification and supports both conceptual understanding and exam performance. Files included: • 5 × editable PowerPoint (.pptx) lessons Last updated: 2026 – refined explanations, improved exam-style questions, and enhanced links to real-world applications including sustainability and climate change.

£6.70

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