gas tests

Question 1

test for ammonia?

Answer 1

place damp red litmus into a sample of gas
if turns blue it is ammonia

Question 2

test for chlorine

Answer 2

place damp blue litmus into a sample of gas
if it turns white its chlorine (bleaches)

Question 3

test for carbon dioxide

Answer 3

bubble a sample of gas through limewater
turns clear to cloudy

Question 4

test for oxygen

Answer 4

1. collect a sample of gas into test tube
2. place glowing splint into the tube
   splint relights

Question 5

test for hydrogen

Answer 5

1. collect a sample of gas in a test tube
2. attempt to ignite the gas using lit splint
   squeaky pop sound