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What is the test for oxygen gas? A - OCR Gateway - GCSE Chemistry - Question 2 - 2022 - Paper 2
Question 2
What is the test for oxygen gas? A. Ignites with a squeaky pop. B. Limewater turns milky. C. Relights a glowing splint. D. Turns damp blue litmus paper white. Y... show full transcript
Worked Solution & Example Answer:What is the test for oxygen gas? A - OCR Gateway - GCSE Chemistry - Question 2 - 2022 - Paper 2
Step 1
C. Relights a glowing splint.
Answer
To test for the presence of oxygen gas, the glowing splint test is commonly used. In this test, a splint that is glowing (but not flaming) is introduced into a test tube containing oxygen. If oxygen is present, the splint will reignite, indicating a higher concentration of oxygen in the environment. This occurs because oxygen supports combustion, allowing the splint to light up again.