The carbon dioxide test
The carbon dioxide test

Carbon dioxide is tested by bubbling the gas through limewater. Limewater is a clear, colourless solution of calcium hydroxide.
Step-by-step lessons on AQA GCSE Chemistry 8.2.3 Test for carbon dioxide. 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.