初中化学课本第一章氧气的性质一节中“白磷的自燃”这一演示实验作法是:将白磷溶解在二硫化碳中,然后再把滤纸在该溶液中浸湿后晾干,等一会才能自燃。 我校是乡镇中学,在实验室里药品不方便,做该演示实验有麻烦。我对该演示实验作了些改进,方法如下。 上课时带一个暖水瓶,带一个烧杯。先将 The demonstration experiment of “Spontaneous Combustion of White Phosphorus” in the nature of oxygen in the first chapter of the chemistry textbook for junior middle school is: Dissolve white phosphorus in carbon disulfide, then soak the filter paper in the solution and let it dry. Wait a minute before spontaneous combustion. . My school is a township middle school. In the lab, the medicine is inconvenient. It is troublesome to do this demonstration experiment. I made some improvements to this demonstration experiment as follows. There is a thermos and a beaker in class. First