In Junior Cycle Science, how can oxygen gas be identified?
Answer and explanation
Correct answer: A. relights a glowing splint
- Step 1: Oxygen supports burning. Step 2. A glowing splint placed in oxygen bursts back into flame. Answer: relights a glowing splint. Why not the others: Turning limewater milky is the test for carbon dioxide, the squeaky pop is the test for hydrogen, and turning damp blue litmus red shows an acidic gas.
Practise more Gases and tests.
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