Structure, bonding and properties
Structure, bonding and properties
Structure describes how particles are arranged, while bonding describes what holds them together. The four main classes are ionic, simple molecular, giant covalent and metallic; noble gases are single unbonded atoms outside these classes.
Step-by-step lessons on Edexcel GCSE Chemistry 2.5.1 Classifying substances by structure and bonding. 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.