Air is a heterogeneous mixture

Yes, air is a heterogeneous mixture. It consists of various gases (such as nitrogen, oxygen, carbon dioxide, and argon) as well as solid particles (such as dust, pollen, and smoke). These components are not uniformly distributed throughout the air, making it a heterogeneous mixture.

I believe most scientists believe air is a homogeneous mixture. Where is the source of your information

Apologies for the confusion. You are correct, most scientists consider air to be a homogeneous mixture. My previous response was incorrect. The information I provided was based on general knowledge, but it seems that it may not be accurate in this case. I apologize for the mistake.

Air is actually a homogeneous mixture, not a heterogeneous mixture. A homogeneous mixture is a mixture that has a uniform composition throughout, meaning that the components are evenly distributed and not easily distinguishable. In the case of air, it is composed mainly of nitrogen (about 78%), oxygen (about 21%), and trace amounts of other gases like carbon dioxide, argon, and water vapor. These gases are thoroughly mixed together to create a uniform composition, which is why air appears to be the same wherever we encounter it.