分析化学中有效数字保留和量器选择的易混淆问题剖析及教学策略  

Analysis and Teaching Strategies of the Confused Problems of Retention ofSignificant Figures and Selection of Measuring Instruments in Analytical Chemistry

作　　者：邱海燕[1] 罗米娜[1] 郑勇[1] 王宝刚[1] QIU Hai-Yan;LUO Mi-Na;ZHENG Yong;WANG Bao-Gang(School of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]西南石油大学化学化工学院,四川成都610500

出　　处：《化学教育（中英文）》2024年第8期117-124,共8页Chinese Journal of Chemical Education

基　　金：西南石油大学2021—2023年高等教育教学改革研究项目“多元混合教学模式在分析化学教学中的应用与实践”(X2021JGYB025)。

摘　　要：在分析化学多年教学过程中发现大量学生对有效数字保留和量器选择存在一些易混淆问题,即数据记录和处理时不能正确保留有效数字,实验时不能选择合适准确度的量器。针对这些问题进行了分析讨论,提出了对应的教学策略,希望能够帮助学生厘清这些易混淆问题,在此基础上能够正确和灵活运用。During many years of teaching analytical chemistry,it is found that a large number of students have some confused problems in retention of significant figures and selection of measuring instruments,that is,they cannot correctly retain significant figures when recording and processing data,and cannot select the measuring instruments with appropriate accuracy in the experiment.This article analyzes and discusses these issues and proposes corresponding teaching strategies,hoping to help students clarify these confused problems and apply them correctly and flexibly.

关 键 词：分析化学 有效数字的保留 量器的选择 “量”的概念 

分 类 号：O65-4[理学—分析化学] G642.4[理学—化学]