一、前言现行初中统编化学教材中“木炭还原氧化铜”的演示实验,是以酒精喷灯作为热源。该方法耗时长,如果喷灯不好用则实验现象不明显,导致演示实验失败,而且,酒精喷灯点燃后噪声较大,操作繁琐。为此,不少化学工作者多年来不断地探索改进此实验的方法。如:在碳原子上引入一些? First, the preface The current junior high school chemistry textbook “charcoal reduction of copper oxide,” the demonstration experiment is based on alcohol torch as a heat source. The method takes a long time. If the torch is not easy to use, the experimental phenomenon is not obvious, which leads to the failure of the demonstration experiment. Moreover, the noise of the alcohol torch ignites is rather large and the operation is cumbersome. For this reason, many chemical workers have continuously explored ways to improve this experiment over the years. Such as: the introduction of some carbon atoms?