Test for gases

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Chemistry

GCSE Chemistry

WJEC

Last updated 5:12 PM on 5/22/25
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4 Terms

1
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Oxygen

Hold glowing spiny in tube - if it relights then it is present

2
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Hydrogen

Light a splint and a squeaky pop will occur if it is present

3
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Carbon Dioxide

Bubble the gas through limewater - if present it will turn cloudy

4
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Chlorine

Test using damp litmus paper - if it turns white then it is present