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化学是一门建立在实验基础上的自然科学,一些化学现象的认识、化学概念的形成、化学定律的建立等都离不开对化学实验现象、物质转换生成规律等在实验中的探究认识和提炼升华。所以,做好化学实验,特别是针对初次学习化学的学生,开好头、起好步、打好基础,升华认识,形成能力,并学以致用地认识理解和解决生活中的化学现象具有重要意义。因此,如何在课本的基础上,探索改进,拓展提炼,优化实验,凸显实验的科学性、规范性、直观性,激发学生
Chemistry is a natural science based on experiments. Some understanding of chemical phenomena, formation of chemical concepts, establishment of chemical laws, etc. can not be separated from the experimental understanding of the phenomenon of chemical experiments and the transformation of matter transformation. Refine distillation. Therefore, to do a good job in chemistry experiments, especially for the students who are learning chemistry for the first time, it is of great significance to start with good ideas, take good steps, lay a good foundation, raise awareness, develop abilities, and acquire knowledge to understand and solve the chemical phenomena in life . Therefore, on the basis of textbooks, we should explore and improve, expand and optimize experiments, highlight the scientific, normative and intuitive experiments and stimulate students