天气预报 > 其他 > 冰还是水吗
冰还是水吗
更新时间: 2019-03-01 00:00:00  

是。分子种类相同,都是水分子,是同一种物质,冰与水的化学成分相同,基本微粒都是水分子(H2O)。冰与水之间的转化是物理变化,只是水分子之间的距离发生了变化,水的三态变化中有别于液体水形态的物质,主要表现为温度低,固态,坚硬,透明晶体。

关键词: 还是

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