Latent Heat in Phase Transition
Latent heat is the heat energy that is either absorbed or released during a phase change of a substance without a change in temperature. This energy is used to break intermolecular forces during phase transitions.

Latent Heat of Fusion
- Latent heat of fusion is the amount of heat energy required to change a substance from solid to liquid at its melting point.
- For example, when ice melts into water, it absorbs heat energy from the surroundings without a change in temperature.

Latent Heat of Vaporization
- Latent heat of vaporization is the amount of heat energy required to change a substance from liquid to gas at its boiling point.
- For instance, when water boils and turns into steam, it absorbs heat energy from the surroundings without a change in temperature.

Example from Daily Life
- A common example of latent heat of fusion is the process of ice melting in a glass of water. The ice absorbs heat from the water to change its state from solid to liquid without a change in temperature.
- Another example of latent heat of vaporization is seen when water evaporates from a hot surface. The water absorbs heat energy from the surface to change its state from liquid to gas without a change in temperature.
In conclusion, latent heat plays a crucial role in phase transitions by either absorbing or releasing heat energy without a change in temperature. Understanding the concepts of latent heat of fusion and latent heat of vaporization helps explain various phenomena in daily life involving phase changes.