Tests for gases

Question 1

Ammonia, NH3

Answer 1

Turns damp litmus paper blue

Question 2

Carbon dioxide, CO2

Answer 2

Turns limewater milky

Question 3

Chlorine, Cl2

Answer 3

Bleaches damp litmus paper

Question 4

Hydrogen, H2

Answer 4

‘Pops’ with a lighted splint

Question 5

Oxygen, O2

Answer 5

Relights a glowing splint

Question 6

Sulfur dioxide, SO2

Answer 6

Turns acidified aqueous potassium manganate(VII) from purple to colourless