4.6.1 Gas tests Flashcards
1
Q
What’s the test for hydrogen?
A
Lit splint makes a squeaky pop.
2
Q
What’s the test for oxygen?
A
Glowing splint relights.
3
Q
What’s the test for presence of water?
A
Anhydrous copper sulphate goes from white to blue.
4
Q
What’s the test for the purity of water?
A
Measure its boiling point. If it boils at 100 degrees, it is pure. If it boils over a range of temperature, it is impure.
5
Q
What’s the test for carbon dioxide?
A
Bubble through limewater, the limewater goes cloudy (white ppt).
6
Q
What is the test for chlorine (Cl2)?
A
Damp blue litmus paper goes white (bleaches).
7
Q
What is the test for ammonia (NH3)?
A
Damp red litmus paper goes blue.
