A solid is one of the three main states of matter, along with liquid and gas. Solids have a definite shape and volume. The particles in a solid are tightly packed together and vibrate in place. The arrangement and movement of these particles give solids their specific properties and characteristics.
Common examples of solids include ice, wood, metal, plastic, and rock. These substances maintain their shape and volume under normal conditions, exhibiting the characteristic properties of solids.
Here are some key points to remember when studying solids: