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AP Chemistry
Air is an example of a gas solution made up mostly of nitrogen and oxygen along with small amounts other gases like argon and carbon dioxide.
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Atmosphere: The layer of gases surrounding Earth, composed primarily of nitrogen and oxygen.
Nitrogen: A colorless, odorless gas that makes up about 78% of Earth's atmosphere.
Oxygen: A gas that makes up about 21% of Earth's atmosphere, necessary for most forms of life.