Matter that has a definite shape and takes up a definite amount of space is known as a solid. Solids are one of the three primary states of matter, alongside liquids and gases.
In solids, the particles are tightly packed together in a fixed arrangement. This close packing of particles gives solids their definite shape and volume. The particles in a solid vibrate in place but do not move freely, which is why solids maintain their shape unless acted upon by an external force.
Examples of solids include everyday objects like wood, metal, and ice. These materials retain their shape and volume regardless of the container they are placed in, unlike liquids and gases which take the shape of their container.
Understanding the properties of solids is fundamental in various fields such as physics, chemistry, and engineering, as it helps in the design and creation of structures and materials with specific characteristics.