* Gas molecules are in constant random motion: Unlike liquids or solids, gas molecules move freely and rapidly in all directions. This means they don't settle at the bottom.
* Gases are compressible: Unlike liquids or solids, gases can be compressed, meaning their volume can be reduced. This further contributes to their ability to spread throughout the entire container.
* Gases exert pressure evenly: The pressure exerted by a gas is the same in all directions within a container, regardless of the container's shape. This means the gas molecules will distribute themselves evenly, not just at the bottom.
Example: Imagine a balloon filled with air. The air molecules don't just stay at the bottom of the balloon; they fill the entire space, giving the balloon its shape.
In summary: Gas particles fill the entire volume of their container, regardless of shape, because they are constantly moving, compressible, and exert pressure evenly in all directions.
