Question

Define the following process involved in the change of state of a substance- freezing

Answer 1

1. Freezing: It is a physical process in which liquid changes into a solid state by releasing heat energy at a constant temperature is called freezing.
2. For example water freezes at $0^{°}C$
3. The warm water loses heat to the cold air in the freezer. This heat transfer occurs until no energy is available for the particles to slide past each other.
4. This forces them to remain in fixed positions, locked in place by the force of attraction between them. This way liquid water is changed into solid ice.
5. The process of liquid water changing to solid ice is termed freezing. The temperature at which it occurs is known as the freezing point.