The melting point is nothing more than the unification of temperature, in which a matter that is in a solid state goes to a liquid state. For a change to occur the temperature, which must be constant for this to happen.
It is worth noting that the melting point is an intensive physical property of matter, that is, it is not linked to the amount of substance or the size of the body. During the fusion process, solid matter begins to heat up until it reaches the melting point, this being the moment in which its change of state occurs and it becomes a liquid quickly, depending on the size of the body.
It is important to point out that if the liquid continues to heat, it can reach its boiling point, which starts from that temperature, a new change of state occurs, going from liquid to gaseous. Furthermore, while the boiling point is directly related to pressure, the melting point has little link with this state.
When speaking of a pure substance, the fusion process takes place at a single temperature, being like this, the addition of heat is not reflected in an increase in temperature until the fusion process ends and the matter is already has become a liquid state.
It is worth noting that many common chemical states that although they have become part of the fundamental theory, their discovery took place through experimentation and observation. An example of this is the diffusion process, which works as follows:
A process such as self-mixing known as molecular diffusion takes advantage of the concept of melting point and occurs due to the thermal movement of the molecules present in a fluid. It should be mentioned that the word molecules, in this case, does not always refer to the set of atoms, but can also speak of small portions of the fluid in question. For example, the element to which it is applied is water.
