盐溶解在水中,就是说一部分水分子被盐取代了。既然结冰的液态水分子减少了,冰点自然降低了。
Y: I think I get it.And Since the rate of melting stays the same, theres more melting going on than freezing. And so the ice melts.
我明白了。水的熔点不变,融化的水分子比结冰的多,所以冰块就融化了。
D: Right.
对。
Y: Interesting.
很有趣。
D: In fact, anything that dissolves in water will do the trick. You could pour sugar on ice and it willmelt. But I guess since salt is cheaper its used more often.
其实,任何溶于水的物质都可以使冰融化。把糖洒在冰上,冰也会融化。但是我想也许由于盐比较便宜,所以经常被使用。
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