
Edexcel IGCSE Chemistry | Unit 3 | Physical Chemistry
This Synapse Science lesson pack covers Unit 3 – Exothermic and Endothermic Reactions from the Edexcel IGCSE Chemistry specification. It includes a structured lesson, a printable worksheet with exam-style questions, a lab-based practical to classify energy changes, and a complete answer key with mark scheme.
Perfect for teaching or revising the fundamentals of energy changes in chemical reactions, including real-world examples and energy profile diagrams.
Specification Points Covered- 3.1: Know that chemical reactions in which heat energy is given out are described as exothermic, and those in which heat energy is taken in are described as endothermic
- 3.5C: Draw and explain energy level diagrams to represent exothermic and endothermic reactions (optional for higher-tier students)
- Lesson Slides – Editable PowerPoint presentation with theory, examples, and diagrams
- Student Worksheet – Printable PDF with exam-style questions and diagrams
- Practical Activity – Classify four real reactions as exothermic or endothermic using temperature change
- Teacher & Technician Notes – Method, setup, expected results, and safety guidance
- Answer Key & Mark Scheme – Full mark breakdowns for all worksheet questions
- Practical activity using safe reactions (neutralisation, salt dissolving, acid + carbonate)
- Built-in observations table and conclusion prompts
- Student-friendly diagrams and language
- Clean Synapse Science layout for consistency across your chemistry curriculum
- Fully printable and editable — ideal for classwork, homework or revision
Edexcel IGCSE Chemistry, Exothermic Reactions, Endothermic Reactions, Energy Changes, Required Practical, Physical Chemistry, Synapse Science, Temperature Change, Energy Profile Diagrams, Worksheet, Mark Scheme
Something went wrong, please try again later.
This resource hasn't been reviewed yet
To ensure quality for our reviews, only customers who have downloaded this resource can review it
Report this resourceto let us know if it violates our terms and conditions.
Our customer service team will review your report and will be in touch.