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冰、雪、霜、雾、雨、露是如何形成的?为什么人从游泳池的水里出来站到岸边太阳下面反而冷?为什么说“下雪不冷化雪冷”?通过观察和分析,我们很容易发现,物质有三种状态,它们分别是固态、液态和气态。并且,这三种状态在一定条件下是可以相互转化的,而转化的过程中各有特点,这些转化及其特点就导致了上述情况的发生。物质由一种状态变成另一种状态的过程叫做物态变化。物质的三态在什么条件下才可以相互转化?
Why ice, snow, frost, fog, rain, and dew are formed? Why do people come out from the pool water to stand on the shore below the sun instead of cold? Why say “snow does not cool the snow”? By observing and Analysis, we can easily find that the material has three states, they are solid, liquid and gaseous. Moreover, under certain conditions, these three states can be transformed into each other, and the transformation process has its own characteristics. These transformations and their characteristics lead to the above situation. The process by which matter changes from one state to another is called state change. Under what conditions can the three states of matter be transformed into each other?