Atoms, elements and compounds
Atoms, elements and compounds
In particle diagrams, particles sharing a colour represent atoms of the same element. Particles shown in different colours, such as dark-blue and light-blue particles, represent atoms of different elements.
Step-by-step lessons on AQA GCSE Chemistry 1.1.1 Atoms, elements and compounds. 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.