Question

Fill in the blank spaces by choosing the correct words from the list given below:

List: motion, space, mass, molecule, elements, atom, shape, changes, cohesion, rigid, hard, adhesion, intermolecular

The solids are generally _________ and _________.

• A. rigid
• B. hard

Answer 1

• In solids, the molecules are very tightly packed.
• As the intermolecular spaces are very small, therefore, the molecules attract one another with strong forces.
• As the molecules attract each other with a very strong force, therefore, it is difficult to tear them apart. Thus, solids are rigid and hard.
• The solids are generally rigid and hard.