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物质温度越高其热量也越大
更新时间: 2020-07-04 00:00:00  

温度越高只能说明物体内能越大,而热量不是衡量内能大小的标准,热量是衡量内能的改变的过程中能量改变了多少。组成物体的所有分子热运动的动能与分子间势能的总和,叫做物体的内能,它与物体分子热运动的能量状态相对应.内能变化将伴随着做功过程或热传递过程,热量只是热传递过程中表征内能变化多少的物理量,不存在物体含热量多少的概念。温度是物体大量分子无规则运动平均动能的宏观标志,温度越高表明分子平均动能越大。

关键词: 物质 温度 热量

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