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Why does salt melt ice?
為什么食鹽能讓冰塊融化?
It lowers the melting and freezing point of water.
是因為食鹽將水的熔點和冰點降低了。
Oh, OK. Wait, I don't get it. Doesn't that mean the salt make ice colder?
等一下，我不明白。這就意味著食鹽讓冰的溫度變得更低嗎?
Let me explain. Pure water freezes at thirty-two degrees Fahrenheit, right?
我解釋一下。純凈水的冰點是32華氏度，對吧?
At that temperature we can say that the rate of freezing is the same as the rate of melting.
這個溫度既是冰點也是熔點。
So in other words, at water's freezing point there's a sort of equilibrium between freezing and melting.
也就是說，水的冰點就是結(jié)冰和融化的平衡。
Right. Throwing salt on ice upsets the balance.
是的。在冰上灑鹽擾亂了這種平衡。
Upsets it how?
怎么打亂的呢?
The salt dissolves into the liquid water, which means that some of the water molecules are replaced by salt.
鹽溶解在水中，就是說一部分水分子被鹽取代了。
譯文為可可英語翻譯，未經(jīng)授權(quán)請勿轉(zhuǎn)載!
