Difference Between Fusion and Vaporization

Thekey differencebetween fusion and vaporization is thatfusion is the conversion of a solid into a liquid, whereas vaporization is the conversion of a liquid into its vapor。

融合一词在不同领域具有不同的定义，但是在物理化学中，我们使用它来描述melting。That is; fusion is the conversion of a solid phase into its liquid phase. On the other hand, conversion of a liquid into its solid is known as freezing or solidification. If the liquid phase of a substance converts into the gaseous phase, then we call it vaporization. Moreover, the energies required for each conversion are known as “heat of fusion” and “heat of vaporization”.

CONTENTS

1.Overview and Key Difference
2.What is Fusion
3.什么是汽化
4.Side by Side Comparison – Fusion vs Vaporization in Tabular Form
5.概括

What is Fusion?

融合是融化的过程，其中固相变成其液相。因此，该术语是指相变。它发生在物质的熔点。此过程所需的能量称为“融合热”。在融合期间，entropyof the system increases because the particles that were in fixed places in the solid tends to get a chance to move in the liquid phase (this increases the randomness, increasing the entropy).

The heat of fusion or the enthalpy of fusion is the change inenthalpy。在恒定压力下为物质提供热能从固相变为液相会导致焓变。固化的焓是相反的现象，并且对于所需的能量量具有相同的值。基本上，

Heat of Fusion = Heat Energy / Mass

什么是汽化?

Vaporization is the process of conversion of a liquid phase into its vapor phase. The entropy of the system increases even more because the particles in the liquid phase gets the ability to move freely at the vapor phase. Heat of vaporization or the enthalpy of vaporization is the change in enthalpy when a liquid turns into its vapor and this is a function of pressure.

Vaporization can occur in two major ways:

Evaporation

Evaporation occurs at the surface of the liquid. It occurs at temperatures below the boiling point of the liquid at the same pressure. Moreover, it occurs only when the partial vapor pressure is less than the equilibriumvapor pressure。

Boiling

沸腾是蒸气作为液体内部气泡的形成。与汽化不同，沸腾的沸腾形成液体表面以下的蒸气。当平衡蒸气压等于或大于环境压力时，就会发生这种情况。

What is the Difference Between Fusion and Vaporization?

Fusion is another term for the process of melting. Vaporization is the process of formation of vapor from a liquid, which can happen in one of the two ways: evaporation and boiling. The key difference between fusion and vaporization is that fusion is the conversion of a solid into a liquid, whereas vaporization is the conversion of a liquid into its vapor. When considering the change in enthalpy, we call the change in enthalpy during the fusion process as the heat of fusion while the change in enthalpy during vaporization is the heat of vaporization.

概括– Fusion vs Vaporization

Fusion and vaporization are two important chemical concepts that describe two phase changes. The key difference between fusion and vaporization is that fusion is the conversion of a solid into a liquid, whereas vaporization is the conversion of a liquid into its vapor.

Reference:

1. Helmenstine, Anne Marie, “Fusion Definition (Physics and Chemistry).” ThoughtCo, Mar. 9, 2019,Available here。
2. “Enthalpy of Fusion.” Wikipedia, Wikimedia Foundation, 5 Apr. 2019,Available here。

Image Courtesy:

1. “Water Phase Change Diagram” By Cawang – Own work(CC BY-SA 3.0)viaCommons Wikimedia
2. “The Water Cycle” ByAIRS(CC BY 2.0)viaFlickr