Table of Contents
Table of Contents
- Latent Heat
- Fusion
- Melting Point
- Boiling Point
- Vaporisation
- Sublimation
- Summary
- What’s Next?
In the previous segment, we learnt about the change of states of matter. In this segment, we will learn about Melting point and Boiling Point.
What is Latent heat?
Heat absorbed or released as the result of a change in the state of matter is called Latent heat.
When heat is supplied to a solid, it melts and gets converted into liquid. But the temperature of the substance doesn’t rise. The particles of matter absorb the heat and store it inside them in the form of kinetic energy. As this heat is hidden it is referred to as latent heat. It is this heat that helps the particles to overcome the forces of attraction that bind them to each other
What is Fusion?
The process of conversion of solid state of matter to a liquid state is known as Fusion.
What is Melting point?
The temperature at which the solid changes to liquid at atmospheric pressure is called its Melting point.
The melting point indicates the strength of the force of attraction between its particles. Stronger the force of attraction between the particles, more heat is required, hence higher the melting point. If the particles are not so strongly attracted, then the melting point is relatively lower.
For example, the melting point of ice is 273.16 Kelvin.
Kelvin is the SI unit of temperature. And 0∘ Celsius is 273.16 Kelvin.
