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.
Topic 3.7: 3.7 Solutions and Mixtures
Air cheat sheet for homework
Atmosphere: The layer of gases surrounding Earth, composed primarily of nitrogen and oxygen.
A colorless, odorless gas that makes up about 78% of Earth's atmosphere.
A gas that makes up about 21% of Earth's atmosphere, necessary for most forms of life.