Explain in terms of the motion of the molecules of the gas why the volume of gas must increase if the pressure is to remain constant as the gas is heated.

- When gas is heated, the molecules gain kinetic energy. 

  • This causes more collisions of greater force per unit time with the wall of the container. 
  • If the pressure is constant, then fewer collisions per unit time are required. 
  • Therefore a bigger volume of the container is required so that there are fewer collisions per unit time.

CS

Related Physics A Level answers

All answers ▸

Two forces of 4N and 10N act on a body. Which of the following could not be the resultant magnitude? (14N, 7N, 6N, 3N)


How would you prove the formula for the total capacitance of a system consisting of several capacitors linked in series?


Imagine a ball rolls off a set of stairs with horizontal velocity, u; the stairs have a height, h and length of l. Find a formula for which step the ball will hit, n.


A 10m long uniform beam is pivoted in its centre. A 30kg point mass is placed on one end of the beam. Where must a 50kg mass be placed in order to balance the beam?