Question

what happens when air is heated

Answer 1

When air is heated it either increases in volume, increases in pressure or both, depending on the conditions. Air is composed of several different gases, most notably nitrogen, oxygen and carbon dioxide, but the particular gas involved does not matter.

Answer 2

Answer: Once air is heated , it expands.

This is due to increased vibrations of molecules of gas when heated. The vibration causes molecules to collide with each other, which creates additional space between them. Thus, molcules freely moves in increased space.

The increased space also causes , volume to increase , which in turn decreases density.

We can understand this by the equation,

ρ $=m/V$

where ρ$=$ Density, $m$ $=$mass, $V=$Volume