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“观察水的沸腾”实验是苏科版教材第二章物态变化中的内容,课程标准要求学生掌握水的沸腾特点,特别是水沸腾时温度不变这一知识内容.笔者在实际教学过程中发现此教材中的水沸腾实验装置存在一些问题:酒精灯的火焰较小,使水温上升太慢,实验时间偏长,学生在分组实验中测量沸水的温度不一样,水沸腾前几乎没有声音.因此笔者认为可使用玻璃电热水壶取代现有的实验装置.
“Observation of water boiling ” experiment is Su Ke edition textbook Chapter II changes in the content of the content, curriculum standards require students to master the characteristics of boiling water, especially when the temperature of boiling water, the knowledge content of the author in the actual The teaching process found that there are some problems with the water boiling experiment device in this teaching material: the flames of the alcohol lamp are small, the water temperature rises too slowly and the experiment time is long, and the students measure the boiling water temperature differently in the group experiment. No sound, so I think that you can use the glass electric kettle to replace the existing experimental device.