Gas Tests Flashcards
1
Q
How do you test for Chlorine?
A
chlorine bleaches litmus paper, turning it white - this is because a solution of chlorine is acidic.
2
Q
How do you test for Oxygen?
A
Putting a glowing splint inside a test tube containing oxygen, the oxygen will relight the glowing splint.
3
Q
How do you test for Carbon Dioxide?
A
Bubbling CO2 through limewater (aquatics solution of calcium hydroxide). This causes the reaction to turn cloudy.
4
Q
How do you test for Hydrogen?
A
Holding a lit splint at the open end of the test tube containing hydrogen, you’ll hear a ‘squeaky pop.’
5
Q
Why does the test for Hydrogen produce a ‘squeaky pop?’
A
The noise comes from the hydrogen burning quickly with the oxygen in the air to form H2O.
