The pressure of a gas results from O gas particles colliding with each other. O gas particles colliding with the container walls. the sum of the volumes of the particles being larger than the container volume. The temperature of a gas is a measure of O the kinetic energy of the gas particles. O the volumes of the gas particles. O the amount of space between gas particles. 0 the number of gas particles. Solution (1) The pressure of GAS is due to the gas-particle colliding with the container wall. This happens because, as the particle strikes with the wall, they transfer momentum to the wall. The rate of transfer of momentum will be the force exerted by the particle on the wall. And that force per unit area will be pressure. (2) For an ideal gas, it is considered that there is no interaction between the individual particle of gas hence there won\'t be any potential energy and hence only kinetic energy. Hence thermal energy is related to the kinetic energy of the gas. .