Question

Assertion (A): Three states of matter are the result of balance between intermolecular forces and thermal energy of the molecules

Reason (R): Intermolecular forces tend to keep the molecules together but thermal energy of molecules tends to keep them apart.

Options

• Both A and R are true and R is the correct explanation of A.

• Both A and R are true but R is not the correct explanation of A.

• A is true but R is false.

• A is false but R is true.

Answer 1

Both A and R are true and R is the correct explanation of A.

Explanation:

Sates of matter of a substance depend on the intermolecular forces.

\[\ce{->[Solid > Liquid > Gas][Decreasing intermolecular force]}\]

Intermolecular forces keep the molecules together while thermal energy of molecules tends to keep them apar