高中化学必修本第一册“卤素”一章中,铜丝在氯气中燃烧的实验和第三章中铜丝在硫蒸气中燃烧的实验,一般用直径大的实验用铜丝,实验效果很不理想。铜丝在氯气中燃烧只能看到铜丝红热的现象和棕黄色烟,反应不剧烈。铜丝在硫蒸气中燃烧则只能看到其表面变黑而不能看到燃烧的现象。我们利用从废电线中取出的细铜丝做在氯气中燃烧实 In the “Halogen” chapter of the first volume of High School Chemistry, the experiment of copper wire burning in chlorine gas and the experiment of burning copper wire in sulfur vapor in the third chapter, the experimental copper wire with a large diameter is generally used. not ideal. Copper wire burning in the chlorine can only see the phenomenon of red copper wire and brown smoke, the reaction is not severe. When copper wire is burned in sulfur vapor, only the surface of the copper wire is blackened and combustion cannot be seen. We use the fine copper wire taken from the scrap wire to burn in chlorine.