Content
The fusion consists of a change of state of a matter in state solid to liquid. This type of transition occurs when the temperature acquired by matter increases to a certain temperature.
When this point is crossed in the opposite direction, that is, when a liquid lowers its temperature until it reaches it, solidify the opposite effect occurring.
Melting point
The temperature level at which chemical fusion occurs is precisely called melting point, and is related to the external pressure level at which it is.
The melting point has a function in the characterization of solids, which is to allow determining the degree of purity that the matter possesses: when impurities are found, the melting point of a compound drops significantly, so that the compliance of the melt when the theoretical value is reached indicates the purity of the solid.
The states and the importance of their changes
The solid state and liquid are the two in which objects are perceptible by the sense of touch:
Solids are characterized by put up resistance to changes in shape and volume, with particles found in unity and satisfactorily organized
Liquids, on the other hand, have a fluid shape and consistency over a wide pressure range. The differences in the characteristics of each State of aggregation They make the ability to switch from one to the other through a change in temperature so valuable to humans.
Foundry
There are many fields in which chemical fusion is used, but one of them stands out, which is metallurgy.
It is called foundry to the process by which metals change from solid to liquid state, usually to be later introduced into a cavity where it solidifies, giving a new shape to something that in its solid form there would have been no way to modify it.
For this, sometimes chemical processes must be carried out that allow reaching very high temperatures, demanded by these foundries.
Fusion examples
Here is a list of examples of fusion processes, with different substances and the temperature to which they react.
| Helium melting temperature, at -272 ° C. |
| Hydrogen melting temperature, at -259 ° C. |
| Melting of ice into liquid water, when the temperature is 0 ° C. |
| Nitrogen fusion, when it reaches -210 ° C. |
| Fusion of arsenic, when it reaches 81 ° C. |
| Chlorine melting temperature at -101 ° C. |
| Bromine fusion, when it reaches -7 ° C. |
| Melting of osmium, when the temperature is 3045 ° C. |
| Transformation of gold into liquid, at 1064 ° C. |
| Molybdenum melting, at 2617 °. |
| Zirconium melting temperature, 1852 ° C. |
| Melting temperature of francium, at 27 ° C. |
| Boron melting at 2300 ° C. |
| Argon melting temperature at -189 ° C. |
| Radon melting, when it reaches -71 ° C. |
| Transformation of alcohol into liquid, at -117 ° C. |
| Neon melting temperature, at -249 ° C. |
| Chromium melting at 1857 ° C. |
| Formation of liquid uranium, at 1132 ° C. |
| Lutetium fusion, at os 1656 ° C. |
| Fusion of fluorine, when it reaches -220 ° C. |
| Mercury melting temperature, at -39 ° C. |
| Melting temperature of oxygen, at -218 ° C. |
| Fusion of stainless steel, at 1430 ° C. |
| Chloroform melting at 61.7 ° C. |
| Fusion of gallium, when it reaches 30 ° C. |
| Rubidium melting temperature, 39 ° C. |
| Tungsten melting temperature, 3410 ° C. |
| Phosphorus melting temperature, 44 ° C. |
| Potassium melting at 64 ° C. |
More information?
- Examples of Physical Changes
- Examples of Solidification
- Examples of Evaporation
