Question

Give a reason for solids are hard and rigid.

Answer 1

Solid: A definite shape and volume substance is called a solid.

• Solids are hard and rigid because the intermolecular forces of attraction that are present in solids are very strong.
• The constituent particles of solids are closely packed this means the intermolecular space between the particles is very less in solids.
• It is not easy to compress solids because the intermolecular space is very less in solids.

Properties of solids:

• The molecules in a solid are tightly packed.
• Solids have definite shapes and volumes.
• Solids are hard and rigid.
• Solids are not easily compressible.
• Solids do not diffuse.