Here's why:
* Weak Intermolecular Forces: Gas particles have very weak intermolecular forces (forces between molecules). This is because the particles are far apart and moving rapidly.
* High Kinetic Energy: The high kinetic energy of gas particles overcomes the weak attractive forces, allowing them to move freely and independently.
* Indefinite Shape and Volume: Because of the weak attractions, gas particles have no fixed shape or volume and will expand to fill their container.
In contrast:
* Liquids: Have stronger intermolecular forces than gases, resulting in a more defined shape but still allowing for some fluidity.
* Solids: Have the strongest intermolecular forces, leading to fixed shapes and volumes.
Therefore, gas particles experience the least attraction between them.
