Analysis of Senior High School Students' Understanding of Chemical Core Concepts: Electrolyte, Ion Reaction and Chemical Bond
WU Han-Qing1,2* , MENG Bo-Yan1 , SU Xin1
1. College of Teacher Education, Capital Normal University,Beijing 100037,China;
2. Institute of Chemical Education, Capital Normal University,Beijing 100048,China
Abstract The core concept of chemistry is the most important content in chemistry teaching. The concepts of electrolyte, ion reaction and chemical bond constitute a core concept group, which is the key and difficult point for students to master relevant knowledge. The investigation of 370 senior high school students in Beijing shows that:(1) The degree of conceptual mastery is chemical bond＜ ion reaction＜ electrolyte. (2) The “concept of electrolyte” is significantly related to the mastery of “conduction principle” “ion reaction concept” and “ion coexistence”; there is a significant correlation between ionization and mastery of ion reaction concepts; the “conduction principle” is significantly related to the mastery of “ion reaction concept” “ion coexistence” and “comprehensive discrimination of ionic bond and covalent bond”. It is shown that the understanding and mastery of electrolyte and conductive principle are important links in the conceptual system. (3) Outstanding, intermediate and academically disabled students have the biggest difference in solving problems related to the concepts of easy and difficult, while the difference in intermediate difficulty is relatively small. Based on this, this paper puts forward the corresponding core concept teaching countermeasures.
WU Han-Qing, MENG Bo-Yan, SU Xin. Analysis of Senior High School Students' Understanding of Chemical Core Concepts: Electrolyte, Ion Reaction and Chemical Bond[J]. Chinese Journal of Chemical Education, 2020, 41(15): 34-38.
