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单词 Normal boiling point
释义

Normal boiling point

中文百科

沸点 Boiling point

(重定向自Normal boiling point)
装于暂时封闭之针筒内之热水
拉开针筒后于低压环境中沸腾的热水

沸点是指物质沸腾时的温度,更严格的定义是液体成为气体的温度。液体在未达到沸点温度时也会通过挥发变成气体。然而,挥发是一种液体表面的现象,也就是说只有液体表面的分子才会挥发。沸腾则是在液体的整个部分发生的变化,处于沸点的液体的所有分子都会蒸发,不断地产生气泡。

英语百科

Boiling point 沸点

(重定向自Normal boiling point)
Boiling water
A log-lin vapor pressure chart for various liquids
Boiling points of alkanes, alkenes, ethers, halogenoalkanes, aldehydes, ketones, alcohols and carboxylic acids as a function of molar mass.

The boiling point of a substance is the temperature at which the vapor pressure of the liquid equals the pressure surrounding the liquid and the liquid changes into a vapor.

The boiling point of a liquid varies depending upon the surrounding environmental pressure. A liquid in a partial vacuum has a lower boiling point than when that liquid is at atmospheric pressure. A liquid at high pressure has a higher boiling point than when that liquid is at atmospheric pressure. For a given pressure, different liquids boil at different temperatures.

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更新时间:2025/6/21 10:57:00