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Identifying Gases

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Identifying Gases

Hydrogen, Oxygen & Carbon Dioxide

- Chemical formula: H2
- Positive test – insert a burning splint into a test tube of gas, if there is ‘pop’ the gas is hydrogen

- Chemical formula: O2
- Positive test – light a splint, then blow it out so there is a glowing ember on the end, insert the glowing splint into the gas, if the splint bursts into flames, the gas is oxygen

- Chemical formula: CO2
- Positive test – insert a burning splint into a test tube of gas, if the flame goes out then the gas is carbon dioxide