* They are far apart. Gas particles are much farther apart than in liquids or solids. This means they have a lot of empty space between them.
* They move randomly and rapidly. Gas particles are constantly moving in all directions at high speeds. This constant motion is what gives gases their ability to fill their containers.
* They have weak attractive forces between them. The attractive forces between gas particles are much weaker than those in liquids or solids. This is why gases are easily compressed and why they expand to fill their container.
* They collide with each other and the walls of their container. These collisions are what create pressure. The more collisions, the higher the pressure.
* Their average kinetic energy is directly proportional to their absolute temperature. This means that as the temperature of a gas increases, the average speed of the particles increases.
Let me know if you would like more detail about any of these points!
