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一、设计思路当发生汽化、液化现象时,气体一般很难直接观察到,学生理解也容易产生困难。因此,在设计本实验时,笔者根据气球体积的变化,让学生形象直观地感知了汽化、液化
First, the design ideas When the phenomenon of vaporization, liquefaction occurs, the gas is generally difficult to observe directly, students can easily understand difficulties. Therefore, in designing this experiment, the author intuitively perceives vaporization and liquefaction based on the change in balloon volume.