化学是一门离不开实验的科学,化学原理及知识大多从实验中获得。中学化学的原理、知识是前人经过反复的实验、实践总结出来的。在中学化学教学中,教师应指导学生通过具体的动手实验来加深学生对知识的理解与巩固,进而使学生从实验中验证知识并获得新的发现,同时,实验中又不自觉地养成了学生勤于观察的习惯,更容易使学生产生创新的灵感及思维。但是,在现行的化学课程教学中,教师或者是为了从视听方面刺激学生、或者是为了增大教学的信息量、或者是为了提高学生的注意力、 Chemistry is an experiment that can not be separated from the science, chemical theory and knowledge are mostly obtained from the experiment. High school chemistry principle, knowledge is the predecessors after repeated experiments, practice summed up. In chemistry teaching in middle school, teachers should guide students through specific hands-on experiments to deepen students’ understanding and consolidation of knowledge, so as to enable students to validate the knowledge from experiments and obtain new discoveries. At the same time, the experiments are not consciously developed Students diligent observing habits, more likely to enable students to produce innovative inspiration and thinking. However, in the current teaching of chemistry courses, teachers either stimulate students in terms of audiovisual learning, or increase the amount of teaching information or in order to increase students’ attention,