Question

What makes you say that ‘air is a matter? ​

Answer 1

Answer:

Air is classified as matter because it has mass and takes up space, which is the definition of matter.

Answer 2

Air is made up of molecules that capture space for example if you blow up a balloon it takes up shape as air has occupied space within the surface thus if you know what pressure is it’s a measure of air’s mass
Hence it has both mass and volume and occupies space thus it is a matter