Analysing Mixtures with Chromatography

The Four Separation Techniques Lesson Pack

This **Year 7 Science Bundle** brings together a complete sequence of six high‑quality, ready‑to‑teach lessons covering the four core separation techniques: **filtration**, **crystallisation**, **simple distillation** and **chromatography**. Designed to build secure foundational knowledge for KS3 Chemistry, this bundle develops pupils’ understanding of mixtures, particle behaviour and scientific processes through clear modelling, practical examples and structured explanation tasks. Each lesson includes a **fully editable PPT and worksheet**, with retrieval practice, diagram work, literacy support and application questions. The unit progresses from single techniques to comparison and real‑world problem‑solving, ensuring strong conceptual understanding and long‑term retention. --- ## **What’s Included in the Bundle** - **Lesson 1: Filtration** Students learn how filtration separates insoluble solids from liquids, identify key equipment and apply the method to real‑life examples. - **Lesson 2: Crystallisation** Learners explore how heating a solution forms crystals, why solutes remain after evaporation and where crystallisation is used in industry. - **Lesson 3: Simple Distillation** Pupils label a distillation setup, explain evaporation and condensation, and understand how distillation produces pure water. - **Lesson 4: Chromatography** Students investigate how chromatography separates coloured substances, interpret chromatograms and explore real‑world uses such as food testing. - **Lesson 5: Comparing All Four Techniques** Learners compare filtration, crystallisation, distillation and chromatography, matching each method to the mixture it separates. - **Lesson 6: Applying Separation Techniques** Pupils apply their knowledge to real‑world scenarios, selecting and justifying the correct technique using scientific vocabulary. --- ## **Why This Bundle Works** - **Clear progression** from single techniques to comparison and application - **Strong scientific literacy** through diagram labelling, key vocabulary and structured explanations - **Retrieval‑rich design** to strengthen long‑term memory - **Real‑world examples** to deepen understanding and relevance - **Fully editable resources** suitable for specialists and non‑specialists