It's hard to imagine that air is matter. Matter is something that has mass and takes up space. Air is invisible. It does not seem to take up space. It does not seem to have mass. For years, people didn't even know that air existed. Air does take up space, but we can’t see it. Air does have mass, but we can't feel it. We can observe that air has both volume and weight.

It's hard to imagine that air is matter. Matter is something that has volume (takes up space) and weight. Air is invisible. It does not seem to have volume. It does not seem to have weight. For years, people didn't even know that air existed. But air does take up space. Air has weight, even if we can't feel it. We can observe that air has both volume and weight.

It's hard to imagine that air is matter. Matter is something that has volume (takes up space) and weight. Air is invisible, it seems to have neither. For thousands of years, people didn't even know that air existed. But air does take up space, even if we can't see it. Air has weight, even if we can't feel it. We can observe that air has both volume and weight.