摘要
依托人教版《化学反应原理(选修4)》教材,利用数字化实验测定无限稀释冰醋酸过程中的电导率和pH的变化,通过宏观现象观察和图像辨识,从微观上深入解析弱电解质的电离特征,突破越稀越电离的认识边界。在激发学生学习兴趣和学习动力的同时,从"宏观辨识与微观探析"维度帮助学生形成整合的弱电解质结构性知识,探索化学平衡的思维规律。
Based on the contents in Chemical Reaction Principle(Elective 4)textbook published by People’s Education Press, this paper measured the changes of conductivity and pH in the process of infinite dilution of glacial acetic acid by digital experiment, and analyzed the ionization characteristics of weak electrolytes deeply from a microscopic view though macroscopic observation and image identification, thus broken through the cognitive boundary, that the lower the concentration of the solution, the easier it is to ionize. While stimulating students’ interest and motivation in learning from the dimension of "macro-identification and micro-analysis", helped students form integrated structural knowledge of weak electrolyte and explore the logic of chemical equilibrium.
作者
邓玉华
杜丽君
DENG Yu-Hua;DU Li-Jun(Chengdu Research Institute of Education and Science,Chengdu 610031,China;Chengdu Golden Apple Jin Cheng No.1Secondary School,Chengdu 610212,China)
出处
《化学教育（中英文）》
CAS
北大核心
2019年第21期77-81,共5页
Chinese Journal of Chemical Education
