Question

why is air considered a mixture give two points in support of your answer​

Answer 1

Air is a mixture because of following reasons: Air can be separated into its constituents such as oxygen, nitrogen etc. Air shows the properties of all the gases present in it. For example: Air supports combustion because of oxygen present in air.

Answer 2

Answer:

Air is considered as mixture due to

• Air is made up of different gases and it's constituent gases are always equal like 78 percent nitrogen and 21 percent oxygen and 1 percent of other gases

• air is not pure as it is not made up of only one kind of matter.
• air is considered as homogeneous mixture