Models show some things and hide others
Models show some things and hide others
A model is a simplified representation of something that cannot be observed directly. Chemists use models because particles and electrons are too small to observe directly.
Step-by-step lessons on Edexcel GCSE Chemistry 2.5.6 Limitations of bonding models and representations. 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.