paper 2 not being tested

Question 1

what are the 4 gases that you need to know tests for?

Answer 1

1. chlorine
2. oxygen
3. carbon dioxide
4. hydrogen

Question 2

what is the test for chlorine?

Answer 2

damp litmus paper - chlorine bleaches it

Question 3

what is the test for oxygen?

Answer 3

glowing splint - relights

Question 4

what is the test for carbon dioxide?

Answer 4

bubbling it through limewater - positive test turns cloudy

Question 5

what is the test for hydrogen?

Answer 5

lit splint - squeaky pop