Solids are substances in the three-dimensional form. Some examples of solids include gases, liquids peaks and crystals. The distinction between the two forms is whether or not these substances have an arrangement of particles. Crystalline solids have a regular arrangement of the particles. Smectic materials are an example of crystalline solids. Amorphous solids do not have a regular arrangement of the particles.”

Solid state is the term used to describe the behavior of a solid material. All of the materials around us, including those used to make our homes, furniture and clothing are classified as solids. Most solids have a regular and repeating three dimensional pattern of constituent particles.

Well, the CBSE Class 12 syllabus is very vast. This can cause difficulty in revision within a shorter span of time, especially for students who haven’t studied all the CBSE Class 12 Chemistry chapters earlier and are not clear on its fundamentals.

The Chapter solid state contains multiple topics such as Solid State Characteristics, Amorphous and Crystalline Solids, Classification of Crystalline Solids, Crystal Lattices and Unit Cells, Number of Atoms in a Unit Cell, Close Packed Structures, Packing Efficiency, Calculations Involving Unit Cells Dimensions, Imperfections in Solids, Solid State Electrical Properties and Solid State Magnetic Properties.

In order for matter to exist as a solid, it must maintain a fixed volume and shape, with component particles (atoms, molecules or ions) close together and fixed into place. In a gas, its particles are still close together but move freely. In the liquid state, a material has both variable volume and shape, adapting both to fit its container.