Water and gas tests Flashcards
(9 cards)
1
Q
Water test
A
- Anhydrous copper (ll) sulphate colour change: white to blue
- Dry coalt (ll) chloride paper colour change: blue to pink
2
Q
Oxygen test
A
glowing splint in the mouth of the test tube, relights (catches fire)
3
Q
Hydrogen test
A
lightened splint on the mouth of the test tube makes a squeky pop
4
Q
carbon dioxide test
A
Effervesence, turns limewater milky/coludy
5
Q
Chlorine
A
Turns damp blue lithmus paper red and bleaches it
6
Q
hydrogen and ammonia the only ___ gas:
A
less dense than air
7
Q
chlorine and ammonia the only __ gas:
A
soluble in water
8
Q
ammonia gas test
A
damp red litmus paper turn blue
9
Q
sulphur dioxide test
A
sulphuric acid - dehydrating agent
* pottasium manganate colour change: from purple to colourless
* pottasium dichromate colour cahnge: orange to green
