Comparison of the Content of “Ionic Reaction” in Three New and Old Senior High School Chemistry Textbooks
AN Jing1, YAN Chun-Geng2, JI Le1, ZHANG Hui-Ying3**, ZHOU Qing1**
1. School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China;
2. Xi'an Middle School, Xi'an 710072, China;
3. School of Chemistry & Environmental Engineering, Hanshan Normal University, Chaozhou 521041, China
