在中学化学实验里,有颜色变化的实验为数不多,能够互变颜色者更是凤毛麟角。在中学化学课外活动里,人们常做的蓝瓶子实验,是一个颜色互变的实验,但是,它的药品不易得,而且实验原理较深,学生不易理解。为此,我们参考国外文献,设计一个在中学化学实验条件下易做的颜色互变实验。 In the middle school chemistry experiment, there are few experiments with color changes, and those who can change colors are rare. In the middle school chemistry extracurricular activities, people often do the blue-bottle experiment, which is a color-mutation experiment. However, its medicine is not easy to obtain, and its experimental principles are deep, and students are not easy to understand. To this end, we refer to foreign literature and design a color-mutation experiment that is easy to do under the condition of middle school chemistry experiments.