Question

As the temperature of a gas increases, the pressure decreases.
true or false

Answer 1

Depends.

Both temp and press are functions of the average velocity of the gas particles: adding heat energy would increase the average kinetic energy of the particles (--> temp increase), and also both their average momentum and the number of collisions between particles and container (--> press increase).

pV = nRT sums all this up nicely.

So, if the vol is kept constant, both temp and press increase proportionately.

Answer 2

increases...cause when temp increases the separation of gas molecules increases as a result if they have no more place to occupy then they will exert a increased pressure on the walls ...