Energy Changes Workbook AQA GCSE Chemistry – Exothermic, Endothermic, Reaction Profiles, Bond Energy

AQA GCSE Energy Changes student booklet covering exothermic and endothermic reactions, reaction profiles, activation energy, catalysts, bond energy calculations and Required Practical 4 (temperature changes). A complete, editable workbook for AQA GCSE Chemistry (4.5.1) and Combined Science Trilogy (5.5.1), with full answers.

This 18-page A4 PowerPoint booklet is designed for 45–60 minute lessons, with short, accessible activities. Ideal for whole-class teaching, revision, cover lessons, intervention and independent study. Full answers mean students can self-assess and the booklet can be used without the teacher present.

What’s covered

• Key Knowledge page: a one-page topic summary with labelled model reaction profiles.
• Exothermic reactions: energy transferred to the surroundings, temperature rise, examples (combustion, neutralisation), uses (hand warmers) and drawing reaction profiles.
• Endothermic reactions: energy taken in from the surroundings, temperature fall, examples (thermal decomposition), uses (sports injury packs) and drawing reaction profiles.
• Required Practical 4: how the volume of alkali affects temperature change in neutralisation – method, variables, risk assessment, results table, graph grid, analysis questions and a 6-mark question.
• Activation energy and catalysts: collision theory and how a catalyst lowers activation energy on a reaction profile.
• Reaction profiles and applications: interpreting profiles and evaluating hand warmers, self-heating cans and cold packs.
• Bond energy calculations (HT): bond breaking and making, a worked example, practice calculations (including methane combustion) and a bond energy data sheet.
• Extra questions: exam-style practice, including an endothermic bond energy calculation.
• Revision: end-of-topic checklist and retrieval-based revision activities.
• Answers: three pages, including full bond energy workings and 6-mark indicative content.

Features

• Mapped to AQA Chemistry 4.5.1 and Combined Science Trilogy 5.5.1, with AQA terminology throughout
• Higher Tier content clearly labelled, so it works for mixed-ability groups
• Learning objectives and RAG success criteria on every lesson page
• Exam-style questions with mark allocations
• Answers included for self- and peer-assessment
• Fully editable – minimal prep: print and teach

Suitable for: KS4 / GCSE Chemistry and Combined Science, Years 9–11, Foundation and Higher.

Written by an experienced science teacher and examiner.