A useful but simplified picture
A useful but simplified picture
The simple particle model represents particles as small spheres. It shows their arrangement, spacing and movement in solids, liquids and gases.
Step-by-step lessons on AQA GCSE Chemistry 2.2.1b Limitations of the simple particle model. Each one builds up to exam-style questions. Nail the core quantitative topics — moles, balancing equations and calculations — early on, since they underpin higher-tier questions across every paper and topic.