what is air and where does it come from?

Answer 1

I think you mean the atmosphere. Well, here you go.

The atmosphere is primarily composed of Nitrogen (N2, 78%), Oxygen (O², 21%), and Argon (Ar, 1%). A myriad of other very influential components are also present which include the water (H²O, 0 - 7%), "greenhouse" gases or Ozone (O, 0 - 0.01%), and Carbon Dioxide (CO², 0.01-0.1%).

A long time ago (more than 6,000 years), our atmosphere was composed greatly of methane and ammonia. Then a chemical reaction occurred, breaking down the methane and ammonia into nitrogen, hydrogen, and carbon dioxide. The lightweight hydrogen escaped our atmosphere, traveling out into space.

That left nitrogen and carbon dioxide. Soon, water vapor in the upper atmosphere was broken down into hydrogen and oxygen. The hydrogen escaped into space, but the oxygen stayed and soon formed an ozone layer. After the formation of the atmosphere, certain blue-green algae began to form on or near the surface of Earth's oceans. They converted the planet's CO² into oxygen. Soon, plants began to grow on land and the oxygen and carbon dioxide levels began to balance. From then on, the levels of O² and CO² have been somewhat steady.

Answer 2

Air is a mixture of gasses and vapors. It comes from elements. Some elements are gasseous at 293K, others liquify at this temperature and we call them liquids. Others still are solid at this temperature and we call them solids. Gold is solid at 293K but it can be heated until it reaches it's melting point. I'm sure at extreme temperatures it could go into a gas phase but I'm sure these temperatures cannot be attained on Earth. Perhaps some stars.

Water is a perfect example of a compound that we can see go through all phases, we can also observe all phases at once at the triple-point of water in which liquid, solid and water vapor exist at the same time. We can even witness some compounds, dry ice, go straight from solid to gas without transitioning through the liquid phase.

Answer 3

I can't believe I'm about to answer this question....

Air is a mixture of gasses and vapors. It comes from elements. Some elements are gasseous at 293K, others liquify at this temperature and we call them liquids. Others still are solid at this temperature and we call them solids. Gold is solid at 293K but it can be heated until it reaches it's melting point. I'm sure at extreme temperatures it could go into a gas phase but I'm sure these temperatures cannot be attained on Earth. Perhaps some stars.

Water is a perfect example of a compound that we can see go through all phases, we can also observe all phases at once at the triple-point of water in which liquid, solid and water vapor exist at the same time. We can even witness some compounds, dry ice, go straight from solid to gas without transitioning through the liquid phase.

Answer 4

Air is a combination of many gases, like oxygen, nitrogen, carbon dioxide- which are produced by many things including plants and living beings.

Answer 5

Indian scriptures say, the whole universe is of 5 elements.
Earth, Water, Light, Air, Sky.
Sky quality sound and air comes from it.
Air quality is feel and light comes from it.
Light quality is vision and water comes from it.
Water quality is taste and earth comes from it.
Earth quality is smell and creation comes from here.
In Sanskrit we say PRITHWI (earth) APAS(WATER) TEJO(light) VAYU(air) AKASAT (sky).

Answer 6

Air, is any gasious substance. Where does it come from? well, trees, fire, poisons, and anything that gives off a gas.

Answer 7

Air is a natural source. iut does not comes from any were. it is here.

Answer 8

Sometimes comes from inside too :)

Answer 9

See sho-nuff.

Answer 10

it comes from your butt