At constant pressure, why does volume increase if temperature increases?
If you have constant pressure in a closed environment and temperature is increasing, volume will increase, too. This is because the hotter a system gets, the more it will expand and the more its density will increase. The more expansion that occurs will obviously, in effect, increase the volume as well. This is a direct variation problem and therefore, shows that volume and temperature are directly related to one another. So, whenever temperature increases under constant pressure, so will volume. (Give me best answer if you liked this response!
