化学是一门以实验为基础的科学,化学科学的历史,是人们不断地通过实验来探索发现研究和创造的历史,它是一个包含着成功和失败,顺利和挫折的漫长的历史过程。学生在教师的指导下学习化学,不可能也没有必要完全重复和经历这个过程,然而前人如何设计实验,对实验现象应当怎样进行精确的观察、深 Chemistry is an experiment-based science. The history of chemical science is the history that people continuously explore and discover research and creation through experiments. It is a long historical process that includes success and failure, smoothness, and setbacks. It is impossible and unnecessary for students to study chemistry under the guidance of teachers. It is impossible and unnecessary for them to completely repeat and experience this process. However, how predecessors designed experiments and how they should observe and deepen experimental phenomena accurately.