The conservation of mass
The conservation of mass
The conservation of mass states that the total mass of the products equals the total mass of the reactants. A chemical reaction rearranges atoms, but it does not create or destroy them.
Step-by-step lessons on Edexcel GCSE Chemistry 2.6.3 Conservation of mass. 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.