摘要
从高中"配合物"概念教学中值得探讨的问题出发,以手持技术TQVC概念认知模型为理论依据,利用手持技术pH和电导率传感器对铜氨配合物的形成与破坏过程进行探究。首先以氨水滴定硫酸铜溶液,然后以硫酸反滴定铜氨配合物溶液。与此同时,利用手持技术获取反应过程中的pH和电导率变化曲线。再根据四重表征模型,从宏观、微观、符号、曲线4个角度对反应过程进行分析,从而揭示反应的本质,多维度实现"配合物"概念的有效建构。
Starting from the issues existing in the teaching of complexes concept, this study explored the formation and destruction of copper-ammonia complexes by using the pH sensor and conductivity sensor of hand-held technology based on the TQVC conceptual cognitive model. Firstly, the copper sulfate solution was titrated with ammonia water, and then the copper-ammonia complex solution was titrated with sulfuric acid. At the same time, the pH and conductivity change curves of the reaction process were obtained. According to the Tetra-Representation model, the reaction process was analyzed from four angles: macroscopic, microscopic, symbol and curves. It revealed the essence of reaction and realized the effective construction of complex concept in multidimensional degree.
作者
李绮琳
钱扬义
张惠敏
唐文秀
林丹萍
LI Qi-Lin;QIAN Yang-Yi;ZHANG Hui-Min;TANG Wen-Xiu;LIN Dan-Ping(School of Chemistry,South China Normal University,Guangzhou 510006,China;No.1 Middle School of Zhongshan,Zhongshan 528403,China;Baoan Middle School(Group)The 2nd Foreign Language School,Shenzhen 518000,China;Guangdong Panyu Middle School,Guangzhou 511400,China;Sienzhen Xin'an Middle School(Group),Sienzhen 518000,China)
出处
《化学教育（中英文）》
CAS
北大核心
2020年第1期79-88,共10页
Chinese Journal of Chemical Education
基金
广东省级“质量工程”项目“化学教学论数字化化学实验精品资源共享课”
中国化学会化学教育委员会基础教育“十三五”规划2018年规划课题“手持技术数字化实验在化学概念学习中的应用”（HJ2018-0022)
关键词
配合物
TQVC概念认知模型
手持技术
四重表征
核心素养
complexes
TQVC conceptual cognitive model
hand-held technology
TetraRepresentation
core literacy
