天气预报 > 其他 > 水的由液体变成固体体积会变大吗
水的由液体变成固体体积会变大吗
更新时间: 2020-09-18 00:00:00  

液态水中水分子间存在较强的氢键作用力,它比分子间的范得瓦耳斯力大得多。当水处于液态时,在氢键力的作用下,水分子靠近,宏观上就表现为体积小。变为固体时,水变为晶体,分子排列有了规律,分子间距离增大,且被固定在一个位置附近,氢键的作用力削弱,宏观的表现为体积变大。

关键词: 液体 变成 固体 体积

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