初中化学课本中木炭还原氧化铜的演示实验因现象不明显，成功率不高而成为一难点。笔者经过反复实验，经改进装置、方法后实验效果明显，成功率达９５％以上。现介绍如下：１实验装置实验装置如图１所示。２操作步骤及现象a．将烘烤后的木炭和氧化铜以质量比为１：９或１：１０ The demonstration experiment of reducing copper oxide from charcoal in junior high school chemistry textbooks is not obvious, and the success rate is not high and has become a difficult point. After repeated experiments, the author has achieved remarkable results after improved devices and methods, and the success rate is over 95%. Are introduced as follows: 1 experimental device Experimental device shown in Figure 1. 2 operation steps and phenomena a. The quality ratio of charcoal and copper oxide after baking is 1:9 or 1:10