Test for gasses and water

Question 1

How do you test for chlorine?

Answer 1

To find chlorine, put a strip of blue litmus paper into a test tube with some chlorine inside. The chlorine will bleach the litmus paper turning white (it may turn red for moment first though - that’s because a solution of chlorine is acidic).

Question 2

How do you test for Oxygen?

Answer 2

Take a test tube and pour some oxygen inside, then put the end of a glowing splint into the test tube. The oxygen will relight the glowing splint.

Question 3

How do you test for carbon dioxide?

Answer 3

Caught carbon dioxide turns lime water cloudy - just bubble the gas to test you above limewater and watch what happens. The limewater eventually turned cloudy.

Question 4

How do you test for hydrogen?

Answer 4

Hydrogen makes a squeaky pop with a lighted splint. (the noise comes from the hydrogen burning with the oxygen in the air from H2O.

Question 5

How do you test for ammonia?

Answer 5

Ammonia turns down red litmus paper blue. (it also has a very strong smell)

Question 6

How to test for Water?

Answer 6

If you want to test for water, all you need to do is add anhydrous copper sulphate and see if the white powder turns blue. This test will tell you if water is present in a solution but it won’t tell you if the water is pure.

Question 7

How do you test for pure water?

Answer 7

Pure water will always boil at 100° and freeze at 0°.