* Definite shape: Solids maintain a fixed shape, unlike liquids or gases.

* Definite volume: They occupy a specific amount of space.

* High density: Solids are generally denser than liquids or gases.

* Strong intermolecular forces: The particles within a solid are tightly packed together and held by strong attractive forces.

* Low compressibility: Solids are difficult to compress because the particles have little free space between them.

* Vibrational motion: Particles in solids are constantly vibrating, but they do not have enough energy to move freely.

Let me know if you'd like more details about any of these characteristics!