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Ammonia, NH3
Turns damp red litmus paper blue
Carbon dioxide, CO2
Turns limewater milky
Chlorine, Cl
Bleaches damp litmus paper
Hydrogen, H2
‘Pops’ with a lighted splint
Oxygen, O2
Relights a glowing splint
Sulfur dioxide, SO2
Turns acidified aqueous potassium manganate (VII) from purple to colourless
Note 
Flashcard (85)