What evidence is that air is a mixture of gases?

Answer 1

Air can be separated into its constituent parts, some easily others not so easily. When this is done the gases exhibit different physical and chemical properties.

The most compelling evidence is the fact that it rains. Water evaporates from the oceans, and becomes vapor - a gas. Thus the air is a mixture of gasses, including water vapor. Eventually the water vapor condenses into liquid water, and rains.

Answer 2

All of the molecules of gases that compose the air around us are so spaced out that it is effectively transparent to us - without color. Since we can't really see any of it, we couldn't really tell any differences. Note that certain kinds of pollution, like nitrogen dioxide, can reach high enough concentrations that they air over a great distance can take on a perceptible color and in that case you might be able to see some differences between the air with all the pollution and a layer of air with less of the pollutant.

Answer 3

What evidence shows that air is a mixture of gases

Answer 4

Yes, air is a mixture of gases (and particulate matter, in some cases).

Answer 5

Yes, air is a mixture of gases.

Air is a mixture of mostly nitrogen, oxygen and a little argon with a trace of other gases.

Answer 6

true