Air Air - Background Information A balloon floats across a ball field. The wind chime on your back porch signals the beginning of an evening breeze. You sigh deeply before grading that last paper of the evening. Each one of these activities involves an ever present type of matter, air.
Air seems simple enough.
After all, it has no color, no taste, no odor, and it seems to take up no space. But don't be fooled. Think about it. But the amount of space air takes up depends on the container. That means that the gas particles that make up air can be compressed, or put under pressure.