Abstract : The temperature at which a substance transforms from its solid state into its liquid foam is known as its melting point. It is a highly helpful physical constant because an impure substance has a lower melting point and melts over a wider temperature range, whereas a pure material melts at a specific temperature and has a sharp melting point. Therefore, figuring out a solid's melting point is a very practical way to assess its purity. Furthermore, by contrasting a substance's melting point with the melting points of other known chemicals, melting point determination can be used to identify a material.