general Flashcards
1
Q
what is the test for hydrogen?
A
lit splint squeaky pop
2
Q
what is the test for oxygen?
A
splint relights in testube of oxygen
3
Q
what is the test for carbon dioxide?
A
limewater. carbon dioxide turns limewater cloudy white
4
Q
what is the test for ammonia?
A
makes litmus paper turn blue. forma ammonium chloride when next to hydrogen chloride(g)
5
Q
what is the test for chlorine?
A
makes iodide paper turn blue/black
6
Q
what colours are the pH scale.
A
RED is always ACIDIC (pH 1-5)
GREEN is always NEUTRAL (pH 6-7)
BLUE/PURPLE is always ALKALINE (pH 8-14)
