Conservation of mass
Conservation of mass
The law of conservation of mass states that the total mass of the products equals the total mass of the reactants. No atoms are created or destroyed in a chemical reaction.
Step-by-step lessons covering AQA GCSE Chemistry 3.1.1 Conservation of mass and balanced chemical equations for Foundation and Higher tier. Each lesson works through exam-style questions in Paper 1 and Paper 2 format. Nail the core quantitative topics — moles, balancing equations and calculations — early on, since they underpin higher-tier questions across every paper and topic.