Tests for GASES Flashcards
(4 cards)
1
Q
Chlorine
A
- Test tube with sample gas
- dampen piece of blue litmus paper
- positive result = blue to white (might briefly turn red as the chlorine reacts with the moisture to form hydrochloric acid)
2
Q
Oxygen
A
Glowing splint will relight
3
Q
Hydrogen
A
Squeaky-pop test: burning splint provides heat energy that makes the hydrogen in the test tube to burn with the oxygen in the air and produce water.
4
Q
Carbon dioxide
A
Bubble the gas through a solution of limewater - Calcium Hydroxide
Positive result = turns cloudy since calcium carbonate is formed which is a solid.
