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Chemical analysisGas tests

Chemists monitor our environment using a variety of quantitative and qualitative analysis techniques. The results from quantitative analysis are used in calculations that give essential information.

Part of ChemistryChemistry in society

Gas tests

When a reaction produces a colourless gas, it is straightforward to test if this is hydrogen, oxygen or carbon dioxide.

Watch these demonstrations of how to test for hydrogen, oxygen and carbon dioxide

GasTestResult
HydrogenLit splintBurns with a pop
OxygenGlowing splintRelights
Carbon dioxideBubble through lime waterGoes cloudy/milky
GasHydrogen
TestLit splint
ResultBurns with a pop
GasOxygen
TestGlowing splint
ResultRelights
GasCarbon dioxide
TestBubble through lime water
ResultGoes cloudy/milky

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