化学中的许多基本理论、基本概念、物质的性质、制法都是以实验为基础,实验教学是化学教学的重要部分。以往实验通常是让学生重复教师课堂上演示过的实验,属于验证性实验。这样的实验大多具有已知操作过程、已知实验结果的特点,教师和教材设计好了一切,学生只是模仿,根本谈不上独 Many of the basic theory of chemistry, basic concepts, the nature of matter, the system of law are based on experiments, experimental teaching is an important part of chemistry teaching. Past experiments are usually for students to repeat the experiment demonstrated in the teacher’s class, is a confirmatory experiment. Most of these experiments have the known operating process, the known characteristics of the experimental results, teachers and teaching materials designed everything, students just imitate, there is no argument alone