How does air behave? What are it’s main characteristics?

Air is a gas that behaves according to the laws of physics and thermodynamics. It expands to fill its container and exerts pressure on the walls of the container.

When the temperature of air is increased, it becomes less dense and rises, while when it is cooled, it becomes denser and sinks.

Air also has the ability to mix with other gases and can be compressed or rarefied. These properties of air can be observed in various phenomena such as the movement of air in the atmosphere, the operation of air compressors and pumps, and the behavior of air in a balloon or tire.