Gas 1 is described as having a random, continuous, and rapid motion. The particles in gas 1 are constantly moving and colliding with each other and with the walls of the container. The interactions between gas 1 particles are predominantly elastic, meaning that they collide without losing or gaining energy. These collisions result in the transfer of energy and momentum between the particles, causing them to change direction and speed. Overall, the motion and interactions of gas 1 particles are chaotic and non-directional.
