testing for gases

Question 1

describe the test for testing for hydrogen

Answer 1

1. remove the bung and insert a burning splint
2. hydrogen gas burns rapidly and produces a pop sound

Question 2

describe the test for oxygen

Answer 2

1. insert a glowing splint into a test tube
2. Oxygen is present if the splint relights

Question 3

describe the test for carbon dioxide?

Answer 3

1. draw some of the gas into a plastic pipette
2. bubble the gas through the limewater
3. repeat several times
4. CO2 is present if the limewater turns cloudy

Question 4

describe the test for chlorine.

Answer 4

1. insert damp litmus paper into the mouth of the test tube
2. if the litmus paper bleaches then chlorine is present

Question 5

what type of splint is used to test for oxygen?

Answer 5

glowing splint

Question 6

what type of splint is used to test for hydrogen?

Answer 6

a burning splint

Question 7

what is limewater?

Answer 7

an aqueous solution of calcium hydroxide

Question 8

what is used to test for chlorine?

Answer 8

damp litmus paper

Question 9

what is the squeaky pop test used to test for?

Answer 9

hydrogen

Question 10

what happens to the splint if oxygen is present?

Answer 10

it relights

Question 11

What happens when carbon dioxide is near is a lit splint,,

Answer 11

The splint goes out