

A clear, visually supported lesson introducing the kinetic particle model of matter. Students explore the arrangement, separation, and motion of particles in solids, liquids, and gases through labelled diagrams and guided comparisons. The resource links temperature to average kinetic energy, introducing the concept of absolute zero (0 K = –273 °C) where particle motion nearly ceases. It also explains Brownian motion as evidence for particle theory, using real-world examples and short tasks to reinforce understanding. Includes retrieval questions, “fill-the-gap” activities, and concise summary slides with model answers. Perfect for laying the foundation of particle theory before progressing to gas laws or thermal energy topics
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