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Oxygen gas identification test
Describe the test for oxygen gas. Give the result if oxygen gas is present.
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Marking points
- 1 States that a glowing splint is used.
- 2 States that the glowing splint relights, paired with the accepted test.
Full-mark answer
Insert a glowing splint into the gas. If oxygen is present, the splint relights.
Why this answer loses marks
Use a lit splint and listen for a squeaky pop.
That procedure is associated with hydrogen; oxygen requires a glowing splint and a relighting observation.