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Gases Index

The Properties of Gases Home Page
Collecting Gases
The Preparation of Gases in the Laboratory

The Chapters Index

 

Footnotes:

The lightest gas known.

Once used in airships but replaced by helium which is not explosive.

Used to make ammonia which is needed in the manufacture of fertilizers and explosives.

 

 

THE LANGUAGE OF CHEMISTRY

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The Properties of Gases

 

Hydrogen gas

Physical Properties

Chemical Properties

hydrogen gas

Colour

Colourless

Odour

Odourless

Density compared to air (heavier or lighter)

Lighter than air. Can escape through the atmosphere into space.

Solubility in water

Insoluble

Burning

Explodes when a burning match is placed into it. Reacts with oxygen gas in the air to form water.

Moist pH paper

No reaction

Red rose petals

No reaction

Specific test

A lighted match will produce a "squeak" sound. This is a small explosion.

 

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