This GCSE Physics PowerPoint lesson provides a detailed and accessible introduction to density, specifically designed for AQA GCSE Combined Science Physics. It explains the definition of density, how it relates to particle arrangement, and how to calculate it using the density equation. The lesson also explores real-world applications of density, such as why objects float or sink, and how particle mass and packing affect material properties.
Density is a physical property that describes how much mass is contained in a given volume. This lesson links the concept to the particle model of matter, helping students understand why solids are typically denser than liquids or gases. Students are guided to recognise how both particle arrangement and mass of particles influence a material’s overall density. Through visual diagrams and real-life comparisons (e.g. gold vs aluminium, oil vs water), learners develop a deeper grasp of this key topic.
The PowerPoint includes a starter activity, explanations, and interactive demonstrations to engage learners. It walks students through step-by-step calculations using the formula ρ = m ÷ V, with worked examples covering common units like kg/m³ and g/cm³. Students practise using rearranged versions of the equation to find mass or volume, and they are introduced to converting between units when necessary.
Also included are review questions, examples, and tasks that challenge students to apply their understanding. Towards the end of the lesson, students complete a variety of practice problems, helping to prepare them for exam-style questions. The PowerPoint file (.pptx) is fully editable and ideal for use in the classroom or for revision.
Last updated: March 2025.
Perfect for teachers and students looking for a clear, curriculum-based introduction to density, particle theory, and calculation skills. Download now to boost engagement and confidence in this fundamental physics topic.
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