Tests For gases

Question 1

How do you test for chlorine?

Answer 1

Chlorine bleaches damp litmus paper turning it white (it may turn red for a moment first as the solution of chlorine is acidic)

Question 2

How do you test for oxygen?

Answer 2

if you put a glowing splint inside a test tube containing oxygen, he oxygen will relight the glowing splint

Question 3

how do you test for carbon dioxide?

Answer 3

bubbling carbon dioxide through ( or shaking carbon dioxide with) an aqueous of calcium hydroxide known as limewater causes the solution to turn cloudy

Question 4

How do you test for hydrogen?

Answer 4

if you hold a lit splint at the open end of a test tube containing hydrogen you’ll get a squeaky pop (the noise comes from the hydrogen burning quickly with the oxygen in the air to form H2O)