Review Lesson on “Ion Reaction and Ion Balance in Aqueous Solution” to Promote Deep Learning
LI Zi-Jian1, XIAO Wei2, CHEN Sheng-Hua1, ZHANG Xuan1, WANG Li1, ZENG Cheng-Hui1**
1. College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China; 2. Nanchang No.3 Middle School, Nanchang 330029, China
Abstract With the basic idea of promoting students’ deep learning, this paper took “the reaction of bicarbonate (HCO-3) and bivalent metal ion (M2+)”, which was closely related to industrial production and real life, as a challenging learning topic to conduct the thematic review lesson of “ion reaction and ion balance in aqueous solution”. Relying on the real situation, students were guided to apply their existing knowledge to explore such questions as “can Ca2+ and HCO-3 coexist in large quantities in the solution” “selection of MnCO3 precipitant” “reaction of Cu2+ and HCO-3” through group discussion and digital experiment. In these processes, students were trained to solve practical problems, build a thinking model for analyzing ionic reactions in complex aqueous systems, and realize the practical application value of “ionic reaction and equilibrium”.
LI Zi-Jian, XIAO Wei, CHEN Sheng-Hua, ZHANG Xuan, WANG Li, ZENG Cheng-Hui. Review Lesson on “Ion Reaction and Ion Balance in Aqueous Solution” to Promote Deep Learning[J]. Chinese Journal of Chemical Education, 2024, 45(15): 80-87.
