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一、实验目的通过白磷燃烧前后质量的测定证明质量守恒定律。二、装置图（见图1）三、装置图的制做（见图2）在橡胶塞上打个孔插人铝条，铝条一端弯成小勺，另一端弯成螺旋状。四、操作步骤1．将绿豆粒大的白磷放人铝条的小勺中，带有铝条的胶塞塞紧锥形瓶。2．称量整个装置的
First, the purpose of the experiment Before and after the white phosphorus combustion quality measurement proved the law of conservation of mass. Second, the device diagram (see Figure 1) Third, the device diagram of the system to do (see Figure 2) Insert a hole in the rubber plug inserted aluminum bar, aluminum bar bent into a teaspoon at one end, the other end turned into a spiral. Fourth, steps 1. Mung bean grain will be large white phosphorus put in the teaspoon of aluminum, with aluminum stopper plug conical flask. 2. Weigh the entire device