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一、设计的方法与技巧实验方案的设计往往有许多途径。为了适应高中生的知识能力水平,中学课本中的某些实验可能不是最优的方案。所以在实验复习中要根据实验原理来设计实验步骤和装置,掌握一些装置和仪器药品的替代方法,力求使设计的实验仪器简单、操作便捷、节省试剂、现象明显、安全防污等,培养和增强实验设计能力和创造性思维能力。(2)制备实验方案设计的程序实验原料→实验原理→途径设计(途径Ⅰ、途径Ⅱ、途
First, design methods and techniques There are many ways to design experimental programs. In order to adapt to the level of knowledge and ability of high school students, some experiments in middle school textbooks may not be the optimal solution. Therefore, during the review of experiments, experimental procedures and devices should be designed based on experimental principles, and some devices and instrumental drug substitution methods should be mastered. The design of the experimental instruments should be simple, the operation should be convenient, the reagents must be saved, the phenomena should be obvious, and the safety and antifouling should be cultivated. Strengthen experimental design ability and creative thinking ability. (2) Preparation of Experimental Protocols Designed Procedures Experimental Raw Materials → Experimental Principles → Route Design (Route I, Route II, Pathway)