test for gases Flashcards
(8 cards)
1
Q
what is the test for oxygen
A
glowing spill relights
2
Q
what is the test for carbon dioxide
A
bubble through limewater turns cloudy
3
Q
what is the test for hydrogen
A
lit spill squeaky pop
4
Q
what is the test for ammonia
A
turns damp red litmus paper blue
5
Q
what is the test for chlorine
A
bleaches damp litmus paper
6
Q
what is the physical test for pure water
A
boiling point test- if boils at 100℃ then pure water is present
7
Q
what is the chemical test for water
A
use anhydrous copper sulfate turns from white to blue
8
Q
what is the test for identifying ammonium ions
A
add NaOH (sodium hydroxide) and heat gently causing ammonia gas to be produced which turns damp red litmus paper blue
