Main distinction – Boiling allude vs. Melt Point

Melting point and also boiling point both explain temperatures in ~ which phase alters occur in substances. The main difference between boiling point and melting point is that the melting allude is defined as the temperature at which solid and liquid phases room in equilibrium, vice versa, the boiling suggest is the temperature in ~ which the vapour press of a fluid is same to the external pressure.

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Difference in between Boiling suggest and Melting point – Melting and Boiling


What is melting Point

Melting allude is defined for a substance together the temperature at which its solid and liquid phases have the right to exist in equilibrium. The is at this temperature that a solid will start melting to come to be a liquid. In ~ this temperature, the molecules forming the substance space gaining enough kinetic power to get rid of the intermolecular forces which host them in solved positions and also they acquire the capacity to relocate around. The freezing point describes the temperature in ~ which a liquid have the right to start developing a solid. A substance can be supercooled listed below its freezing allude without it forming a solid, so technically, melting and freezing clues are not the same. However, we can assume them come be almost the very same for a wide variety of cases.


What is boiling Point

Boiling point deserve to be characterized for a liquid together the temperature at which its vapour pressure is equal to external pressure. At this temperature, the problem in liquid phase beginning the gas phase. If the exterior pressure is larger, climate it takes a higher temperature for the vapour pressure to become equal to the external pressure. Consequently, the boiling allude is highly dependent on external pressure. Because that instance, water can be boiled in ~ much reduced temperatures when the outside pressure is lower (around 70o C at mountain Everest because that example). The normal cook point is defined as the temperature in ~ which the vapour push of the fluid is same to 1 atm, i.e. The temperature at which liquid would boil when the exterior pressure is equal to 1 atm.

Difference Between Boiling allude and melting Point

Definition of Boiling allude and melting Point

Melting point is the temperature in ~ which solid and also liquid phases of a substance are in equilibrium.

Boiling point is the temperature in ~ which its vapour pressure is equal to the external pressure.

Phase Change

At the melting point, a solid becomes a liquid.

At the boiling point, a fluid becomes a gas.

Pressure Dependence

Melting point does not change with changes in the outside pressure.

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Boiling point transforms with alters in the external pressure.

Image Courtesy:(Untitled) by Fotocitizen (Own work) , via Pixabay (modified)“Boiling Water” by Scott Akerman (Own work) , via flickr (modified)

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