| Hydrolytic equilibrium is the core component of the theoretical system of high school chemical equilibrium,which,together with weak electrolyte ionization equilibrium,water ionization equilibrium and precipitation dissolution equilibrium,constitute the four major systems of high school chemical equilibrium.The student already has some knowledge in mind before learning the hydrolytic equilibrium knowledge.These myths in the existing knowledge will have a great impact on students' correct understanding of the concept of hydrolysis equilibrium,leading to many students in the learning process to produce a lot of difficult points to overcome.Therefore,in this study summarizes the domestic and foreign research achievements about the myth of the hydrolytic equilibrium concept,on the basis of according to "the ordinary high school chemistry curriculum standard" in China,zhejiang province ordinary high school discipline teaching guidance,combined with the focus of the investigation of the students are widespread difficulties,compiled the "2-phase hydrolysis equilibrium test",three high school students in Yue Qing city common myth of the hydrolytic equilibrium concept has carried on the exploration and analysis of the concept of myth reasons and puts forward reasonable strategy,on the basis of teaching design and teaching experiment was carried out,and for students to interview after class,In order to verify whether the transformation strategy proposed based on the exploration results can effectively promote students' conceptual transformation of hydrolysis equilibrium and effectively avoid the generation of related myths.This study finds that the key strategy to break through students' puzzling concept of hydrolytic equilibrium and achieve the understanding of the nature of hydrolytic equilibrium is to first probe into students' existing concepts,and then carry out teaching design and teaching based on the existing concepts.In addition,the concept of hydrolysis equilibrium is a deepening of the concept of chemical equilibrium.The mastery of the concept of hydrolysis equilibrium needs to be based on the concept of chemical equilibrium.Therefore,the textbook of hydrolysis equilibrium also needs to be compiled based on this logic to help students establish a complete view of chemical equilibrium. |
