Scientific models are provisional
Scientific models are provisional
A scientific model is a simplified representation used to describe and explain observations about something that cannot be seen directly, such as an atom. The model is accepted while it fits the available experimental evidence.
Step-by-step lessons on AQA GCSE Chemistry 1.1.3 The development of the model of the atom (common content with physics). 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.