What is the difference between Melting and Dissolving? - ProProfs Discuss
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What is the difference between Melting and Dissolving?

Asked by Jasmijn , Last updated: Jul 25, 2020

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P. Halah

P. Halah

Answered Jul 02, 2020

Most times, it is very common to see people using the terms "melting" and "dissolving" interchangeably. While this is not true, let me just explain some of the differences between these two terms. Melting refers to the process of changing the state of a substance from solid to liquid. A perfect example of this is an ice (solid state of water) dissolving to give liquid water, usually by heating the ice. We should not get confused because I used the term "dissolving"; what is important is that the substance is changing from a solid-state to a liquid state.

Most times, it is very common to see people using the terms

Although, the example is probably the simplest one; however, this kind of conversion occurs by heating a solid substance past its melting point. On the other hand, dissolving is the process by which solid solute or liquid solute dissolves in a solvent to give a solution. Before anything can dissolve, there must be a solvent so as to give a solution.

 

K. Galatia

K. Galatia

Answered Jul 01, 2020

Melting itself is a phase change, and there are three significant places in which matter can occur, which are solids, liquids, and gas. When a solid substance becomes its liquid, this is known as melting or fusion, and for material to melt, energy should be supplied. This energy can either be provided as heat or pressure.

Melting itself is a phase change, and there are three significant places in which matter can occur,
The temperature at which a solid becomes a liquid is called the” melting point.” Dissolving is not a phase change. It is stabilized in a liquid form. Dissolving is not essentially a solid stabilized in a liquid, but it might be another liquid or even gas. To cause a substance to melt, energy must be supplied either as heat or pressure, but to dissolve, it is typically not necessary. The molten substance is the pure liquid form of the solid, which was melted.

 

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