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

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What happens in the test if hydrogen is not present in the test tube?

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2

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Draw a diagram to show test tubes containing the limewater before and after carbon dioxide is added

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3

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What oxygen based type of reaction occurs in the oxygen test with a glowing splint?

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4

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Choose the correct definition of combustion from the options shown.

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5

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What result do we see from this test is chlorine is present?

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6

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A gas being tested in the lab is giving off a sharp, choking smell. What gas could it be?

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7

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Can we work out from the given experimental results exactly what gas has been tested? Why/why not?

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8

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

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