Topic 4 - Gases and Water Tests

Question 1

what is the test for chlorine?

Answer 1

Bleaches damp blue litmus paper white

Question 2

what is the test for oxygen?

Answer 2

Relights a glowing splint

Question 3

What is the test for carbon dioxide?

Answer 3

Turns limewater cloudy

Question 4

What is the test for hydrogen?

Answer 4

Put a lit splint where the gas is and if there’s a squeaky pop, hydrogen is present.

Question 5

how are copper (II) sulfate crystals used to test for water?

Answer 5

add drops of a solution to anhydrous copper (II) sulfate. if the powder turns blue, water is present.

Question 6

how do you test if water is pure?

Answer 6

pure water will always boil at 100 degrees and freeze at 0 degrees (celsius)