Gas Tests

Cards (8)

What are the properties of Hydrogen?
It is a colourless gas that reacts violently with oxygen when ignited
Describe the test for Hydrogen?
Place a lighted splint in a test tube containing the gas. If the gas is hydrogen, there will be a squeaky pop , as hydrogen burns when mixed with air
What are the properties of chlorine?
It is a green poisonous gas that bleaches dyes
Describe the test for chlorine gas?
Use damp litmus paper. If the litmus paper turns white , chlorine is present (This is a sign the litmus paper has been bleached)
What are the properties of oxygen gas?
A colourless gas that helps fuels burn more readily than in air
Describe the test for oxygen gas?
Place a glowing splint inside a test tube. If oxygen is present, the glowing splint relights
What are the properties of carbon dioxide?
A colourless gas
Describe the test for carbon dioxide?
We use limewater - an aqueous solution of calcium hydroxide . Use a plastic pipette to draw the gas out of its test tube . Then bubble the gas through the test tube of limewater . If carbon dioxide is present , the limewater turns cloudy