通过实验探究促进学生自主建构概念模型——配合物
Experimental Exploration Promotes Autonomous Construction of Concept Model:Complex
朱成东 1谷慧心 2鹿钰锋 3徐泓 4孙影2
作者信息
- 1. 安徽省教育科学研究院 安徽合肥 230061
- 2. 安徽师范大学化学与材料科学学院 安徽芜湖 241002
- 3. 合肥工业大学附属中学 安徽合肥 230009
- 4. 安徽省宣城市教体局教研室 安徽宣城 242000
- 折叠
摘要
以[Co(NH3)5Cl]Cl2在水溶液中如何电离为问题情境,借助手持传感器展开定性以及定量实验探究活动,结合实验证据引发对三价钴离子微观结构的探讨,从而自主构建配合物的相关概念.再通过创设实验情境,如:"向硫酸铜溶液中逐滴滴加浓氨水至过量生成四氨合铜离子""[Co(NH3)4Cl2]Cl呈现紫色和绿色2种颜色"等,激发学生展开联想质疑、模型搭建的课堂活动,促进学生学习方式转变,强化"结构决定性质"的化学观念.
Abstract
Taking the ionization of[Co(NH3)5Cl]Cl2 in aqueous solution as the problem sce-nario,qualitative and quantitative experimental exploration activities were carried out using hand-held sensors.Combined with experimental evidence,the exploration of the microstructure of tri-valent cobalt ions was initiated,thereby independently constructing relevant concepts of comple-xes.By creating experimental scenarios such as"adding concentrated ammonia water dropwise to copper sulfate solution until excessive generation of tetra-ammonium copper ions"and"[Co(NH3)4Cl2]Cl presenting purple and green colors",classroom activities such as association questioning and model building are carried out to promote the transformation of students'learn-ing methods and strengthen the chemical concept of"structure determines properties".
关键词
实验探究/实验情境/配合物/模型建构Key words
experimental inquiry/experimental situation/complexes/model construction引用本文复制引用
基金项目
人民教育出版社课程教材研究所"十四五"委托课题(KC2023-006)
教育部课程教材研究所委托课题()
出版年
2024
NETL
NSTL
万方数据