Tests for gases

Question 1

Test for chlorine

Answer 1

Chlorine bleaches damp litmus turning it white ( may be red for a moment as chlorine is a acidic solution)

Question 2

Test for oxygen

Answer 2

If you take a glowing splint and put it inside of a test tube containing oxygen, oxygen will relight the glowing splint

Question 3

Test for co2

Answer 3

Bubble co2 through ( or shake it with ) an aqueous solution of calcium hydroxide (Lime water ) which causes the solution to cloud

Question 4

Test for hydrogen

Answer 4

If you hold a lit splint at the open of a test tube containing hydrogen , you’ll get a” squeaky pop”. ( noise comes from hydrogen burning quickly with o2 in the air to form H20