摘要
针对焰色反应教学存在的不足,以手持技术TQVC概念认知模型为理论依据,从"混合、定量"的角度出发,设计手持技术数字化实验以促进学生对焰色反应概念的认知。利用分光光度计传感器,通过测定火焰发射光谱的波长和光强度,从定性和定量2个方面检测混合液中的NaCl和KCl,帮助学生从宏观和微观相结合的视角认识焰色反应的本质。
In view of the shortcomings of the flame reaction teaching,the hand-held technology TQVC concept cognitive model is used as the theoretical basis,at the perspective of"mixed and quantitative",the digital experiment of the hand-held technology is designed to promote students’cognition of the concept of flame reaction.This study uses a spectrophotometer sensor to detect the NaCl and KCl in the mixed liquid from both qualitative and quantitative aspects by measuring the wavelength and light intensity of the flame emission spectrum,helping students understand the essence of flame reaction from the perspective of the combination of macro and micro.
作者
林惠梅
钱扬义
吴宝珠
蔡丹菊
LIN Hui-Mei;QIAN Yang-Yi;WU Bao-Zhu;CAI Dan-Ju(School of Chemistry,South China Normal University,Guangzhou 510006,China)
出处
《化学教育(中英文)》
CAS
北大核心
2021年第15期79-83,共5页
Chinese Journal of Chemical Education
基金
2020年广东省研究生教育创新计划研究生示范课程建设项目“化学实验设计与研究(手持技术)”(编号:2020SFKC023)
2020年广东省高等教育教学改革项目“化学卓越教师实验教学创新能力的‘四联动’培养范式——以教育部东芝杯全国师范大学化学教学创新大赛获奖作品为例”成果之一。
关键词
手持技术
焰色反应
TQVC概念认知模型
分光光度计
hand-held technology
flame reaction
TQVC conceptual cognitive model
spectrophotometer