Carbon dioxide is a colourless gas that is made when carbonates react with acids and when fuels burn. To test for it, use limewater, which is an aqueous solution of calcium hydroxide. Limewater is clear and colourless at the start.
Either shake the gas with a little limewater in a test tube, or bubble the gas through the limewater. If the gas is carbon dioxide, the limewater turns milky, which is also described as cloudy.
A gas that does not turn limewater milky is not carbon dioxide.
Read the text and highlight anything you think is important. When you go on, the text is hidden and you answer from memory.
Specification: AQA Chemistry (8462), GCSE. Topic: Chemical analysis.
All 14 lessons in Chemical analysis · All AQA GCSE Chemistry topics
This is one of the lessons in AQA GCSE Chemistry. With BrainCake you get:
£15 a month, or £149 a year. Cancel any time.
Already a member? Sign in.
We would like to use Google Analytics cookies to see which lessons help most. Nothing is set unless you accept. Privacy notice