让学生深刻体验和感悟离子反应真实发生——电导滴定法在研究酸碱盐反应规律中的应用  

Let Students Deeply Experience and Understand the Real Occurrence of Ion Reaction:Application of Conduct Metric Titration in the Study of Acid-Alkali-Salt Reaction Law

作　　者：刘臣[1] 李伏刚[2] LIU Chen;LI Fu-Gang(Beijing Guangqurmen Middle School,Beijing 100062,China;Basie Education Teaching Research Center,Beijing Academy of Educational Sciences,Beijing 100036,China)

机构地区：[1]北京市广渠门中学,北京100061 [2]北京教育科学研究院基础教育教学研究中心,北京100036

出　　处：《化学教育（中英文）》2020年第13期48-53,共6页Chinese Journal of Chemical Education

摘　　要：借助数字化实验辅助,创设问题情境,利用电导滴定法研究酸、碱、盐间发生复分解型离子反应的规律。基于数字化实验结果,从宏观-微观-符号-曲线四重表征的视角,对实验结果进行了分析和解释,使学生在实证中体验和感悟离子反应真实发生,并进行了教学反思。Focusing on students’experience and perception in learning process and cultivating students’scientific inquiry ability is the focus of the new round of chemistry curriculum reform.With the aid of digital experiments,classroom teaching creates problem situations and conduct metric titration is used to study the rule of double decomposition ion reaction among acid,alkali and salt.Based on the digital experimental results,the experimental results are analyzed and explained from the perspective of four representations of macro-micro-symbol-curve,so that students can experience and perceive the real occurrence of ion reaction in the demonstration,and reflect on teaching.

关 键 词：离子反应 数字化实验 电导滴定法 教学设计 

分 类 号：G633.8[文化科学—教育学]