质量相等的0℃的水和0℃的冰来冷却食物， 的效果好一些。这是因为它在冷却食物过程中多了一个 （填物态变化）过程，要吸收大量的热。沸油烫伤比同质量的沸水烫伤更严重，这是因为油的 比水高。
冰、熔化、沸点
题目分析：熔化是通过对物质加热，使物质从固态变成液态的变化过程．因为0℃的冰熔化为0℃的水时要吸收大量的热，而温度保持0℃不变，当冰全部熔化后，再吸热，水才能升温；而0℃的水吸热后直接升温，因此不难判断谁的冷却效果好；这是因为油的沸点比水的沸点高，沸油烫伤比同质量的沸水烫伤更严重。
点评：此题考查了熔化和汽化的知识，对生活中常见的物态变化及有关现象要了解．
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