Tests

Question 1

What is the test used to detect chlorine gas?

Answer 1

Chlorine bleaches damp blue litmus paper red first and then white.

Question 2

What is the test used to detect oxygen gas?

Answer 2

Oxygen will relight a glowing splint

Question 3

What is the test used to detect carbon dioxide gas?

Answer 3

Carbon dioxide will turn clear limewater into a cloudy white colour

Question 4

What is the test used to detect hydrogen gas?

Answer 4

The squeaky pop test. A lit splint will emit a popping sound in the presence of hydrogen.

Question 5

What is the test used to detect ammonia gas?

Answer 5

Ammonia turns damp red litmus paper blue.

Question 6

Why, when testing for a gas using litmus paper, must the paper be damp?

Answer 6

So that the gas particles stick to the paper and are able to react with it. If it was dry, the litmus paper would not change color as the gas particles would slip off it.

Question 7

In a flame test, what color flame will lithium produce?

Answer 7

Red

Question 8

In a flame test, what color flame will sodium produce?

Answer 8

Yellow/light orange

Question 9

In a flame test, what color flame will potassium produce?

Answer 9

Lilac

Question 10

In a flame test, what color flame will calcium produce?

Answer 10

Bright orange

Question 11

In a flame test, what color flame will copper produce?

Answer 11

Greenish blue (mainly green)

Question 12

In a flame test, what color flame will iron produce?

Answer 12

Yellow

Question 13

In a flame test, what color flame will zinc produce?

Answer 13

Teal