1. Solid:

* Shape: Definite, fixed shape.

* Volume: Definite, fixed volume.

* Density: Generally high.

* Compressibility: Very low. Solids are practically incompressible.

* Movement of particles: Particles are tightly packed and vibrate in fixed positions.

* Example: Ice, rock, wood.

2. Liquid:

* Shape: Takes the shape of the container it occupies.

* Volume: Definite, fixed volume.

* Density: Generally less dense than solids.

* Compressibility: Low but more compressible than solids.

* Movement of particles: Particles are close together but can move around each other freely.

* Example: Water, oil, mercury.

3. Gas:

* Shape: Takes the shape of the container it occupies.

* Volume: Fills the entire volume of the container.

* Density: Very low.

* Compressibility: Highly compressible.

* Movement of particles: Particles are widely spaced and move freely and randomly.

* Example: Air, oxygen, helium.