Question

Why do solids require more energy compared to liquids and gases for the movement of particles?

Answer 1

1. There are three states of matter.
2. They are solids, liquids, and gases.
   1. In solids, the particles are closely packed and there is a strong force of attraction between the particles which holds them in a fixed position. The particles have very limited freedom.
   2. In liquids, the particles are close together but are not so close as in solids. The intermolecular force of attraction is less than that of solids. So, the particles in liquids have more freedom than those in solids.
   3. In gases, the particles are much farther apart from one another as compared to solids and liquids. The space between them is very large. The force of attraction between them is negligible. So, particles of gas are free to move in any direction.

Thus, a solid requires more energy for the movement of particles since the particles are closely packed and have a strong force of attraction between them.