The Kinetic Molecular Theory Postulates state that gases are made up of a larger number of particles, which, behave like hard, spherical objects that move in constant and random motion. Moreover, the particles move straight until they collide with other particles or walls in the containers, the particles are also smaller than the distance between them making the volume of gasses mostly empty space. There are also no attractive forces between the particles or between the particles or between the particles and the walls of the container. Lastly, the average kinetic energy of gas particles depends on the temperature of the gas alone.
In the other hand, the properties of gasses are that a gas has no define volume or shape, gasses also have low densities and all behave the same even in changes with temperature and pressure by expanding or contracting depending on the change.
