化学通报1956年5月号安守林同志所设计的在讲解燃烧条件时的补充实验,对帮助巩固和理解这一节课的知识上作用很大。能使同学深刻的认识到温度和与氧接触两个条件缺一不可。但是在烧杯中通入氧气时磷常常滚动,必须移动导管使接近磷块。有时磷因燃烧时温度增高以致融熔,水一波动则被冲散。我作时改成如下装置比较方便而且效果显著。在储气瓶的出气导管连一干燥管,在球的下边塞上棉花(不要太紧)或放上铁丝网,把白磷放在上面。先加冷水通氧不见燃烧,再加 The supplementary experiment designed by Comrade An Shulin in May 1956 to explain the conditions of combustion contributed greatly to the knowledge that helped to consolidate and understand this lesson. Make students a profound understanding of the two conditions of temperature and contact with oxygen are indispensable. However, when oxygen is introduced into the beaker, phosphorus often rolls and the catheter must be moved closer to the phosphorous mass. Sometimes phosphorus is melted by the increase of the temperature at the time of combustion, and the water is dispersed as it fluctuates. When I made the following device is more convenient and the effect is significant. Connect a drying tube to the air outlet tube of the gas cylinder, stuff the bottom of the ball with cotton (do not be too tight) or put a barbed wire to place the white phosphorous on it. First, add cold water oxygen can not see the combustion, plus