What is corrosion?
What is corrosion?
Corrosion is the breaking down of a metal by reaction with substances in its surroundings. It is an oxidation reaction because the metal loses electrons and commonly gains oxygen from the air or water.
Step-by-step lessons on Edexcel GCSE Chemistry 6.1.2 Corrosion and its prevention. 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.