Scientific models change
Scientific models change
A scientific model is a simplified representation used to describe and explain observations. Models help scientists picture structures such as atoms that cannot be observed directly.
Step-by-step lessons covering AQA GCSE Chemistry 1.1.3 The development of the model of the atom (common content with physics) for Foundation and Higher tier. Each lesson works through exam-style questions in Paper 1 and Paper 2 format. Nail the core quantitative topics — moles, balancing equations and calculations — early on, since they underpin higher-tier questions across every paper and topic.