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为什么水结成冰后体积会增加呢

更新时间: 2020-09-19 00:00:00     

水未结冰时,分子间有氢键,分子无序排列,分子间距离小故密度相对较大体积小。分子结冰后,晶体中分子排列整齐,破坏氢键,分子间主要是范德华力,引力减小,分子间空隙大,故密度小体积大。

关键词: 为什么 结成 体积 增加

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