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Edexcel GCSE Chemistry Identifying Gases

Identifying Gases

This page covers the following topics:

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

Test for hydrogen

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

Test for carbon dioxide

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

Test for oxygen

We can use damp litmus paper to test for chlorine.

Test for chlorine

Gases can be identified in the lab by simple tests.

Gas tests

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

Edexcel GCSE Chemistry Identifying Gases 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

Edexcel GCSE Chemistry Identifying Gases 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?

Edexcel GCSE Chemistry Identifying Gases 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.

Edexcel GCSE Chemistry Identifying Gases 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?

Edexcel GCSE Chemistry Identifying Gases 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?

Edexcel GCSE Chemistry Identifying Gases 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?

Edexcel GCSE Chemistry Identifying Gases 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?

Edexcel GCSE Chemistry Identifying Gases 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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