Question

Water vapours have more energy than water at the same temperature.

Answer 1

Hint: Vapour phase has the most potential energy. Attraction between neighboring molecules is called intermolecular forces. Energy stored in the position is the potential energy. If there is not enough kinetic energy then the molecule is in solid form. . Temperature does not change when a substance is in melting point or boiling point.

Complete step by step answer:
According to the question, we know that liquid water molecules have less freedom to move around the surrounding. Whereas if we compare this to molecules of water vapour, it has more freedom to move around as there is larger space between the molecules. Hence the kinetic energy of water molecules is more than kinetic energy of water in liquid form.
This is also because water vapour being of gas exerts much pressure than the water which is in the liquid form. This is at the same temperature. When water is heated it becomes vapour and then the steam also called the vapour gives off heavy hot gas, and after applying more pressure it will give more energy. Water vapour basically gains the Latent heat of vaporization that is the extra heat energy gained. Vapour phase has the most potential energy.

Note: Attraction between neighboring molecules is called intermolecular forces. The energy of motion is the kinetic energy. Energy stored in the position is the potential energy. If there is not enough kinetic energy then the molecule is in solid form. After adding enough energy then the molecule works like a liquid. Temperature does not change when a substance is in melting point or boiling point.