* Gases: Gas particles are spread far apart and move freely. They have no fixed shape or volume and will expand to fill their container.
* Liquids: Liquid particles are closer together than gas particles but still have some freedom of movement. They have a fixed volume but take the shape of their container.
* Solids: Solid particles are tightly packed together in a fixed arrangement. They have a definite shape and volume.
In summary: Gas particles have the most space between them, leading to the greatest volume.
