0摄氏度以下水的温度-密度曲线是怎样的?如何与0摄氏度以上衔接???

2025-04-08 10:35:32
推荐回答(1个)
回答1:

冰点以下的水是固态的水(冰),冰的密度不随温度改变而变化,所以,水的温度-密度曲线只有冰点以上部分,作为冰的温度-密度曲线是一条平行于温度轴的直线,该直线与密度轴的交点即为冰的密度;一个气压下,水的温度-密度曲线从摄氏0度开始到摄氏4度,水密度增加。曲线向上并在摄氏4度处达到最高点,然后随温度增加,水密度减少而曲线下降,曲线到沸点结束(沸腾时水温不再增加)。水的蒸汽温度-密度曲线又是另一个物态的变化曲线了。

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