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What is gas? Explain.
The matter is anything that has mass and takes up space. Everything around us is a matter like Food, Water, and Cloth, including air.
Following are the three basic states of Matter:
• Solid
• Liquid
• Gas
• Plasma
Gas is one of the four fundamental states of matter. A gas may be made up of individual atoms, elemental molecules made from one type of atom, or compound molecules made from a variety of atoms. A gas mixture contains a variety of pure gases for example air.
For example - air, oxygen, hydrogen, nitrogen, carbon dioxide, etc are all gases.
Gases have three characteristic properties:
(1) Gases are easy to compress
(2) Gases expand to fill their containers
(3) Gases occupy far more space than the liquids or solids from which they form.
Example: An internal combustion engine has gas easily compressed inside it.
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