白磷在空气中燃烧时产生的白烟对空气会有一定的污染。本人现对这个白磷燃烧实验进行了一些改进，即消除了白烟对空气的污染，变成了一个环保型的实验，也使学生通过这个实验更容易掌握物质燃烧应具备的两个条件。往A试管中装入一定量的白磷，B试管装少量红磷，广口瓶中装少量 The white smoke produced when the white phosphorus is burned in the air will cause some pollution to the air. I have now made some improvements to this white phosphorus burning experiment, which has eliminated the pollution of white smoke on the air and turned it into an environment-friendly experiment. It also makes it easier for students to master the two conditions that the substance should burn. Put a certain amount of white phosphorus into the test tube A, a small amount of red phosphorus in the B tube, and a small amount in the jar