Generally speaking, air, which is a mixture of a number of gases, is homogeneous.
It's true that some conditions will allow some heterogeneous behavior, where "separation" occurs. The collection of radon gas in low areas (like the basement of a house) where there is no air circulation is an example. And things smell differently here and there as you wander about because of other things in the air. But just walking around and "looking" at the air as you go, you'll find the gases in it are evenly distributed. There generally won't be more carbon dioxide here and less nitrogen there and more or less oxygen in either place. The air will pretty much be the same everywhere you travel around. Gases diffuse in a volume of space to "fill" it and will end up fairly evenly distributed under "normal" conditions.
solution, which is a homogeneous mixture
Airt is a homogeneous mixture.
No. It will be a homogeneous mixture of gases.
Pure air is homogeneous because all components are completely miscible.
Salad dressing is a heterogeneous mixture.
Air is a homogeneous mixture.
Air is a homogeneous mixture.
Air is a homogeneous mixture.
homogeneous
solution, which is a homogeneous mixture
Airt is a homogeneous mixture.
homogeneous
air is homogeneous
No. It will be a homogeneous mixture of gases.
Air is homogeneous mixture of gases.
Air is a homogeneous mixture because is the same throughout.
Pure air is homogeneous because all components are completely miscible.