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简述熔点的测定原理
更新时间: 2020-08-17 00:00:00  

基本原理:熔点是指物质在大气压力下固态与液态处于平衡时的温度。将固体物质加热到一定温度,由固态转变为液态,测定此时的温度就是该晶体物质的熔点。纯净的固体一般有固定的熔点,而且熔点范围很小,一般不超过一摄氏度;若物质不纯时,熔点就会下降,熔程扩大。

关键词: 简述 熔点 测定 原理

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