Identification of Common Gases (AQA GCSE Chemistry): Flashcards

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Tests for gases
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12 cards from this deck

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Test for hydrogen

Burning splint near gas - makes squeaky pop

Sound hydrogen makes with burning splint

Squeaky pop

Test for oxygen

Glowing splint into gas - relights into flame

Effect of oxygen on glowing splint

Relights/bursts back into flames

Test for carbon dioxide

Bubble through limewater

Effect of carbon dioxide on limewater

Turns milky/cloudy white

Product when CO2\text{CO}_2 reacts with limewater

Calcium carbonate (CaCO3\text{CaCO}_3)

Ca(OH)2+CO2\text{Ca(OH)}_2 + \text{CO}_2 \rightarrow

CaCO3+H2O\text{CaCO}_3 + \text{H}_2\text{O}

Test for chlorine

Damp blue litmus paper in gas

Effect of chlorine on damp blue litmus paper

Turns red then bleaches white

Two properties chlorine shows in litmus test

Acidic (red) and bleaching agent (white)

Four gases tested in practical chemistry

Hydrogen, oxygen, carbon dioxide, chlorine

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