Question

Give reasons:

liquids and gases flow but solid do not.

Answer 1

Fluidity:

• In the case of solids, the molecules are very closely packed.
• There is a strong force of attraction between the molecules of solids and the space between them is very small.
• Thus, molecules of solids are not free to move.
• In the case of liquids and gases, the molecules are not so closely packed as particles of solid.
• They do not attract each other as strongly as the molecules of solids.
• Thus, the intermolecular spaces are larger and the molecules are able to move more freely and have the ability to flow.