What concentration means
What concentration means

A solution forms when a solute dissolves in a solvent. Concentration measures how much solute is present in a given volume of the solution.
Step-by-step lessons covering AQA GCSE Chemistry 3.2.5 Concentration of solutions 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.