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How many types of gases are present? Explain each of them briefly?
Gas is one of the three states of matter, while the other two are solid and liquid. At standard temperature and pressure, many elements can exist at a gaseous state, and also there are many other elements and compounds that exist at gaseous state at certain temperature and pressure. Basically, gases are of three types.
1) Elemental gasses
These are the elements that exist as gasses at standard temperature and pressure. A change in pressure or temperature can turn these elements into liquids or gasses.
For example oxygen, nitrogen, inert gases, etc.
2) Pure and mixed gases
Pure gases can be made up of individual atoms such as inert gases or can be comprised of a group of different atoms such as carbon dioxide.
On the other hand, mixed gases are a mixture of more than one kind of pure gas.
Examples of pure and mixed gases include - Ammonia, Butane, Carbon dioxide, Ethane, etc.
3) Toxic gases
These gases harm when people inhaled them. Examples of toxic gases include- Arsenic, Bromine, Chlorine, etc.
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