Identifying gases
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Identifying Gases. Hydrogen, Oxygen & Carbon Dioxide. Hydrogen Gas. Chemical formula: H 2 Positive test – insert a burning splint into a test tube of gas, if there is ‘pop’ the gas is hydrogen. Oxygen Gas. Chemical formula: O 2

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Identifying gases

Identifying Gases

Hydrogen, Oxygen & Carbon Dioxide


Hydrogen gas
Hydrogen Gas

  • Chemical formula: H2

  • Positive test – insert a burning splint into a test tube of gas, if there is ‘pop’ the gas is hydrogen


Oxygen gas
Oxygen Gas

  • 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


Carbon dioxide
Carbon dioxide

  • 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


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