A student makes revision cards about tests for gases.
The names available are carbon dioxide, chlorine, hydrogen and oxygen.
One row has been completed.
| Positive observation | Gas name |
|---|---|
| A burning splint produces a squeaky pop. | hydrogen |
| A glowing splint relights. | |
| Limewater turns milky when the gas is bubbled through it. |
Write the two missing gas names in the table.
Another card states that damp litmus paper is bleached white.
Name the gas described on this card.
89 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.