The pressure of a gas inside a container with a fixed volume will increase when the gas temperature increases. The pressure of the gas increases because the

increase in temperature causes the gas molecules to have more kinetic energy. The increased kinetic energy leads to an increase in the frequency and force of the gas molecule collisions with the walls of the container. As a result, the gas exerts a higher pressure on the walls.

a

gas molecules bond together to form massive molecules.
b
gas molecules collide more frequently with the walls of the container.
c
gas molecules collide less frequently with the walls of the container.
d
density of the gas decreases.

b