Why does salt melt ice?
为什么食盐能让冰块融化?
It lowers the melting and freezing point of water.
是因为食盐将水的熔点和冰点降低了_*c|Nro2m,~d&hmVL。
Oh, OK. Wait, I don't get it. Doesn't that mean the salt make ice colder?
等一下，我不明白^@d|;K|C[A*q。这就意味着食盐让冰的温度变得更低吗?
Let me explain. Pure water freezes at thirty-two degrees Fahrenheit, right?
我解释一下^J9dwy+4nVWz(。纯净水的冰点是32华氏度，对吧?

At that temperature we can say that the rate of freezing is the same as the rate of melting.
这个温度既是冰点也是熔点zG[J)HJY4+fHdyjh。
So in other words, at water's freezing point there's a sort of equilibrium between freezing and melting.
也就是说，水的冰点就是结冰和融化的平衡D7fk6H=;NH]2WX|uML21。
Right. Throwing salt on ice upsets the balance.
是的@tY(s#!fB4;1i!JjH=Cm。在冰上洒盐扰乱了这种平衡=_)d|s%6xKz。
Upsets it how?
怎么打乱的呢?
The salt dissolves into the liquid water, which means that some of the water molecules are replaced by salt.
盐溶解在水中，就是说一部分水分子被盐取代了C+zB%A3@G994iO。

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