Final answer:
When more gas particles are added to the same space, the behavior of the gas will change in several ways. There will be an increase in pressure, an increase in volume, and an increase in the number of collisions between gas particles and the container walls.
Step-by-step explanation:
When more gas particles are added to the same space, the behavior of the gas will change in several ways. First, there will be an increase in the number of collisions between gas particles and the walls of the container. This will result in an increase in the pressure exerted by the gas. Second, the volume occupied by the gas will increase. This is known as Avogadro's law, which states that at constant temperature and pressure, the volume of a gas is directly proportional to the number of particles present. Finally, the frequency and force of molecule-wall collisions will increase, leading to a greater force applied to the container walls.