gas tests

Question 1

hydrogen test & result

Answer 1

test: burning splint held at the open end of a test tube of the gas
result: squeaky pop sound

Question 2

oxygen test & result

Answer 2

test: glowing splint inserted into a test tube of the gas
result: relights

Question 3

carbon dioxide test & result

Answer 3

test: bubbled through limewater
result: turns cloudy/milky

Question 4

chlorine test & result

Answer 4

test: damp litmus paper put into chlorine gas
result: bleaches white