Question

The molecules on the surface of liquid have ______.

Options

• minimum kinetic energy

• minimum potential energy

• maximum kinetic energy

• maximum potential energy

Answer 1

The molecules on the surface of liquid have maximum potential energy.

Explanation:

This is because surface molecules experience an imbalance of intermolecular forces, as they are not completely surrounded by other molecules (unlike those in the bulk of the liquid). To remain at the surface, they possess higher potential energy compared to molecules inside the liquid.