Question

Difference between atmospheric air and compressed air​

Answer 1

Answer: Atmospheric air pressure varies with elevation and temperature. Air at atmospheric conditions is generally called "free air." Compressed air is free air that has been forced into a smaller volume and is now at a pressure greater than atmospheric. Compressed air is expressed in terms of pressure and volume.

Answer 2

Atmospheric air is known as free air, it’s particles are not being forced to collide as they roam freely and randomly. However, compressed air is air that cannot escape from a reduced volume. It’s particles exert a small force when they collide with the container that they’re in, resulting in compressed air having a high pressure.