Micro Melting Point Matter is made up of many tiny particles called molecules. These molecules arrange themselves in the order that is lowest in energy at the temperature of the immediate environment.
Phases of matter are characteristic of that matter at a particular temperature.
If the temperature of the surroundings changes, then the phase of the matter may also change. The change of matter from the solid to the liquid phase is melting This experiment determines the melting points of several pure substances. Since the lab procedure requires the use of micro-sized quantities of samples, you must make careful observations. If commercial grade samples of naphthalene and para-dichlorobenzene are used, the large lumps or crystals must be first powdered in a mortar and pestle. Place a small sample of the desired solid in the bottom of a small test tube.