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锅里的水怎样才算烧开
更新时间: 2020-09-25 00:00:00  

当锅里的水面上大量冒泡泡时,锅里的水就算烧开。水烧开会有泡泡是因为水在加热前是液态水,加热后水这个物质整体温度升高。由于热胀冷缩,该物质整体体积增大,密度降低,水由液态变为气态。气态水与液态水相比密度更小,因此会浮上来,水面上就会有很多泡泡冒出。

关键词: 怎样

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