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Bubble the gas through limewater; if it turns milky/cloudy, the gas is CO₂.
Saying “lighted splint goes out” – that only tests for a gas that doesn’t support combustion (e.g., CO₂ or nitrogen), but is not specific to CO₂. The limewater test is the specific test. Question example: "Explain why burning wood is a chemical reaction, but cutting wood is not." exploring science 7f quick quiz answers
