A student has four test tubes. Each test tube contains one of these gases: hydrogen, oxygen, carbon dioxide or chlorine.
The table gives the test used for three of the gases.
Table: The test used for three of the gases, and the result of each test
| Test | Gas | Result of the test |
|---|---|---|
| a burning splint held at the open end of the test tube | hydrogen | |
| a glowing splint put into the test tube | oxygen | |
| the gas shaken with limewater | carbon dioxide |
Complete the table to give the result of each of the three tests.
Name the gas that is in the fourth test tube.
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.