High School Students' Mental Models in Learning Saline Hydrolysis
CHEN Xiao-Na1, YAN Chun-Geng2, ZHOU Li3, ZHOU Qing1,4
1. School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China; 2. Northwestern Polytechnical University Center for Faculty Development, Xi'an 710072, China; 3. Shenzhen Senior High School, Shenzhen 518040, China; 4. National Innovation Center for Assessment of Basic Education Quality Branch Center in Shaanxi Normal University, Xi'an 710062, China
Abstract This paper probed high school students' learning about the content of saline hydrolysis by using the two-tier diagnostic tests and semi-structured interviews,and comprehend their mental models about definition and nature of saline hydrolysis,writing in hydrolysis reaction equation,judging acid-base property of salt solution,influence factors of saline hydrolysis,applying three conservation laws in saline hydrolysis and application of saline hydrolysis,such as interedependency model,misconceptions model,thinking-set model,macro-micro-symbol cognitive bias model and so on. At last,this paper put forward relevant teaching suggestions for teachers.
