摘要
现有文献对铁丝燃烧绕成螺旋状的原因分析存在问题,通过文献研究以及视频拍摄测量铁丝在拉直、绕成小螺旋、中螺旋、大螺旋时完整燃烧时间和剧烈燃烧时间。从"是否影响实验的成败、是否影响实验现象观察、是否影响实验操作的便利和安全性"3个角度分析铁丝绕成螺旋状的原因。
Existing references have problems with the analysis of the reasons why the iron wire is wrapped into a spiral shape when burning.Video shooting was used to measure the complete burning time and the intense burning time of the iron wire when it was straightened,wrapped into a small spiral,a medium spiral,and a large spiral.Combining literature and experimental data,this paper analyzes the reasons why the iron wire is wrapped into a spiral shape from three perspectives:whether it affects the success or failure of experimental operations,whether it affects the observation of experimental phenomena,and whether it affects the convenience and safety of experimental operations.
作者
刘静松
LIU Jing-Song(Second Middle School,Chizhou City,Chizhou 247000,China)
出处
《化学教育(中英文)》
CAS
北大核心
2021年第23期98-103,共6页
Chinese Journal of Chemical Education
基金
2020年池州市教育科学研究立项课题“基于学历案的初中化学实践研究”(JK2016)
2021年度安徽省教育科学研究课题“融合信息技术突破初中化学学科认知障碍的课堂提质研究”(JK210027)。
关键词
铁丝燃烧
螺旋状
定量探究
iron wire burning
spiral shape
quantitative inquiry