在“人教版初中三年制化学教材(以下称‘老教材’)”和“人教版义务教育课程标准实验教科书《化学》(以下称‘新教材’)”中,为探究化学反应前后物质的质量变化情况,设计了白磷燃烧的实验方案。但是如果同学们细心分析的话,这个实验在操作上以 In the “Personal Education Edition junior middle school three-year chemistry textbook (hereinafter referred to as the ”old textbook“) ”“ and ”PEP compulsory education curriculum standard experimental textbook “chemistry” (hereinafter referred to as ’new textbook’)", The quality change of the material before and after the chemical reaction was explored, and the experimental scheme of white phosphorus combustion was designed. But if the students carefully analyze it, this experiment is operationally