“镁条燃烧”实验在初中化学中的作用及实施

Function and Implementation of "Magnesium Ribbon Burning" Experiment in Junior High School Chemistry

通过比较，分析“镁条燃烧”实验在不同版本的义务教育化学教科书中围绕核心知识所发挥的作用。重点对“镁条燃烧”实验在“质量守恒定律”学习过程中的适切性进行讨论，通过对反应原理的复杂性、实验结果的多样性、实验过程的危害性等方面的分析，提出了一些关于“镁条燃烧”实验操作的实施建议。

This paper analyzed the functions of ＂magnesium ribbon burning＂ experiment in the different junior high school chemistry textbooks to core knowledge, discussed the appropri- ateness in the learning process of ＂law of conservation of mass＂. Based on the complexity of the reaction principle, the diversity of the experimental results, and the harm of the experimental process and so on, this paper put forward some suggestions on the operation of ＂magnesium rib- bon burning＂.