A student is given one sealed test tube of a single gas. The gas is hydrogen, oxygen, carbon dioxide or chlorine. The student has damp litmus paper, limewater and wooden splints, and cannot collect any more of the gas.
Plan how the student could identify the gas using the gas in this one test tube only.
40 exam-style questions on AQA GCSE Chemistry 8.2 Identification of common gases, covering 8.2.1 Test for hydrogen, 8.2.2 Test for oxygen, 8.2.3 Test for carbon dioxide, and 8.2.4 Test for chlorine. Each one has a worked solution and a mark scheme showing where the marks go.