Melting point examples
The melting point is known as the temperature at which a body changes from a solid state to a liquid state. It is at that temperature that the element loses its current properties to change to other properties of the new state, in this case, the liquid state.
This process is widely used in industries to be able to mix raw materials and produce products. Especially when melting metals to create parts from them. But also in our homes we have visualized, in a certain way, how an apparently solid element “melts” with direct or indirect heat.
Characteristics of the change from solid to liquid state
Some elements in solid state have a temperature at which they can melt into a liquid substance. During this process, the heat is constant and under normal pressure, that is, it does not vary. It should not be confused with the boiling point, where pressure does play an important role.
Due to this uniformity in pressure, the melting point keeps substances unaffected (pure). That is why it is considered the physical and constant property of matter.
This phenomenon is used to study the purity level of substances, since it is not an invasive procedure and will not modify this property .
Examples of melting points
These are some of the melting points of certain elements or substances:
- Solid water (ice) (H2O), at 0 ° C
- Copper (Cu), at 1085 ° C
- Aluminum (Al), at 660 ° C
- Gold (Au), at 1064 ° C
- Silver (Ag), at 962 ° C
- Steel, around 1375 ° C (depending on its alloy)
- Carbon (C), at 3500 ° C
- Potassium (K), at 64 ° C
- Tungsten (W), at 3422 ° C
- Argon (Ar), at -189 ° C
- Alcohol, at -117 ° C
- Iron (Fe), at 1539 ° C
- Lead (Pb), at 328 ° C
- Mercury (Hg), at -39 ° C
- Nitrogen (N), at -210 ° C
- Hydrogen (H), at -259 ° C
- Acetaldehyde, at -123.5 ° C
- Helium (He), at -272 ° C
- Arsenic, at 81 ° C
- Chlorine, at -101 ° C
- Bromine, when it reaches -7 ° C
- Osmium, at 3045 ° C
- Molybdenum, at 2617 ° C.
- Neon, at -249 ° C.
- Zirconium, 1852 ° C.
- Francium, at 27 ° C.
- Boron, at 2300 ° C.
- Radon, at -71 ° C.
- Chromium, at 1857 ° C.
- Liquid uranium, at 1132 ° C.
- Lutetium, at 1656 ° C.
- Fluorine, at -220 ° C.
- Stainless steel, at 1430 ° C.
- Chloroform, at 61.7 ° C.
- Gallium, at 30 ° C.
- Rubidium, at 39 ° C.
- Phosphorus, at 44 ° C.