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Gas Tests and Identification Quiz

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Questions and Answers

What is the test for hydrogen gas?

Extinguishing a flame

Igniting a small sample to produce a squeaky pop (correct)

Placing a glowing splint in a sample of gas

Bubbling it through lime water

How can oxygen be tested?

Igniting a small sample to produce a squeaky pop

Placing a glowing splint in a sample of gas (correct)

Bubbling it through lime water

Extinguishing a flame

What is the potential confusion when testing for oxygen using a glowing splint?

The splint may produce a high-pitched sound

The splint may not re-ignite at all

The splint may create a pop slightly on re-ignition, sometimes mistaken for hydrogen (correct)

The splint may extinguish completely

What is the best way of testing for carbon dioxide?

Bubbling it through lime water Signup and view all the answers

What gas is produced when a pungent smelling gas is evolved using sodium hydroxide solution on a salt sample?

Ammonia Signup and view all the answers

What does a glowing wooden splint do when placed in a test tube of oxygen?

Relights Signup and view all the answers

What does bubbling carbon dioxide through calcium hydroxide solution (limewater) result in?

The limewater turns cloudy white Signup and view all the answers

What is the chemical name for limewater?

Calcium hydroxide Signup and view all the answers

What is the test for oxygen gas?

A glowing splint relights in the presence of oxygen Signup and view all the answers

Study Notes

Testing for Gases

The test for hydrogen gas is not specified.
Oxygen can be tested using a glowing splint, which reignites in the presence of oxygen.
A potential confusion when testing for oxygen using a glowing splint is that it may also reignite in the presence of air, which is not pure oxygen.
The best way to test for carbon dioxide is by bubbling it through calcium hydroxide solution (limewater), which turns cloudy.
When a pungent smelling gas is evolved using sodium hydroxide solution on a salt sample, it produces chlorine gas.
A glowing wooden splint placed in a test tube of oxygen will reignite or burst back into flame.
Bubbling carbon dioxide through calcium hydroxide solution (limewater) results in the formation of a white precipitate, causing the solution to turn cloudy.
The chemical name for limewater is calcium hydroxide solution.
The test for oxygen gas is using a glowing splint, which reignites in the presence of oxygen.

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Description

Test your knowledge of gas tests and identification with this quiz. Learn about common gases and their tests to identify their presence in chemical reactions.