铜丝在硫蒸气里燃烧的实验是教学大纲中规定的必做演示实验。但按人民教育出版社出版的高一化学课本(第52页)上和参考书上(第146页)所说的方法去做,成功率极低,约为10％左右。本人通过多年的教学摸索和反复实验,经过改进后,本实验的成功率可达100％。能明显观察到铜丝在硫蒸气中剧烈燃烧,并伴有少量火星,红热状态可保持较长时间。现介绍如下。 The experiment of copper wire burning in sulfur vapor is a mandatory demonstration experiment stipulated in the syllabus. However, according to the method described in the Chemistry textbook (page 52) and the reference book (page 146) published by the People’s Education Press, the success rate is extremely low, about 10%. After many years of teaching and experimentation, I have improved the success rate of this experiment to 100%. Obviously observed in the sulfur vapor burning copper wire, accompanied by a small amount of Mars, red hot state can be maintained for a long time. The introduction is as follows.