AQA GCSE Combined Science: Synergy · 8465

Tests for Gases

What you need to know

Describe the standard chemical tests used to identify selected gases produced in reactions, including oxygen, hydrogen, and chlorine.
Describe the test for hydrogen gas using a burning splint held at the open end of a test tube.
Describe the test for oxygen gas using a glowing splint inserted into a test tube.
Describe the test for chlorine gas using damp litmus paper.
Interpret observations from these gas tests to accurately identify unknown gases.