test for gases Flashcards
1
Q
how do you test for chlorine gas
A
Chlorine bleaches damp litmus paper, turning it white.
2
Q
how do you test for oxygen
A
Insert a glowing splint into a test tube of oxygen. The splint will relight.
3
Q
how do you test for carbon dioxide
A
Bubble the gas through limewater (calcium hydroxide solution). If CO₂ is present, the solution turns cloudy.
4
Q
how do you test for hydrogen
A
Hold a lit splint at the open end of a test tube of hydrogen. If hydrogen is present, a squeaky pop sound is heard.
