The concept of heat of fusion can be understood as when the amount of energy required to melt a given quantity of a solid at its melting point temperature is measured by heat of fusion. In the other Words, when a certain mass of liquid transforms and solidifies, it also indicates the amount of energy lost during this. For example, we can see that water has a fusion heat of around 80 calories per gram. This means that it consumes 80 calories of energy to melt 1 gram of ice at the temperature of zero degrees Celsius into water. The value of heat of fusion can vary here depending upon what type of substance is being used.
We can see that the heat received by ice is equal to the heat lost by water, for example. The heat of fusion is represented by the symbol ΔHf.
Melting is the process through which a solid material transforms into a liquid. To allow the solid-state particles to break loose from one other, the melting process will require an increase in energy. Fusion heat is the source of this energy. Although the heat of fusion is not the same for all substances, it is a constant value for each type of substance.
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