Is Air Matter?

Air is matter. I think that takes up space is matter. Why do you ask? If you blow air into a balloon, it inflates. This is because air is pushing the rubber of the balloon to expand and to create space for itself.
Air contains, carbon dioxide, oxygen, dust, and all those junk we have in the air now in the 21th century. Dust is actually dead skins cells and bacteria and a lot of other stuff, dust can make dustbunnies. Dust bunnies, lots of dust stuck together. This creates a mass and it takes up space. Carbon dioxide and oxygen and other stuff in the air is made of elements in the Periodic Table. They contain atoms and they take up space. Just because we can't see them or weigh them, doesn't mean their not matter. After all- they do matter.