We can test for hydrogen by placing a lighted split in a test tube containing the gas.

The test for carbon dioxide involves bubbling the gas through limewater.

We can use a glowing splint to test for oxygen in a test tube.

We can use damp litmus paper to test for chlorine.

Gases can be identified in the lab by simple tests.

1

If oxygen is present in the test tube what will we see?

2

What property of chlorine gas is it that allows it to act as a bleach?

3

You suspect a gas you are testing to be toxic, what precaution should you take when testing it in the lab?

4

What type of paper is used in the test for chlorine?

5

You are testing a gas you know to be either hydrogen or chlorine. Which test would you use? Why?