二氧化碳熄灭阶梯蜡烛实验的创新设计  

Innovative Experiment Design of Extinguishing Ladder Candles by Carbon Dioxide

作　　者：李莹萍 谢乃健 陈承声[3] LI Ying-Ping;XIE Nai-Jian;CHEN Cheng-Sheng(Shunde Jianan Junior High School,Foshan 528329,China;Zhongshan Xiaolan Huacheng Middle School,Zhongshan 528415,China;Guangdong University of Education,Guangzhou 510303,China)

机构地区：[1]顺德区建安初级中学,广东佛山528329 [2]中山市小榄花城中学,广东中山528415 [3]广东第二师范学院,广东广州510303

出　　处：《化学教育（中英文）》2020年第21期59-62,共4页Chinese Journal of Chemical Education

基　　金：“广东省教育厅关于公布2016年本科高校教学质量与教学改革工程立项建设项目的通知”(粤教函(2016)233号)。

摘　　要：围绕中学化学教材中二氧化碳熄灭阶梯蜡烛的实验设计,从实验原理入手,自制了简便"阶梯蜡烛",改进了二氧化碳气体的倾倒方法。通过实验探究发现,在大小一定的反应容器中,实验成功率与蜡烛间距以及储气瓶口径大小有关。研究了影响实验的可能因素,提供了一种安全可靠、成功率高的实验方法。The experiment of extinguishing ladder candles by carbon dioxide, which appears in the chemistry textbooks is deeply discussed. According to the experimental principle, a self-made ladder candles is created, and the method for dumping carbon dioxide from collecting gas bottle is improved. Based on inquiry into the experiment, it is found that the success rate for this experiment is concerned not only with the distance between the two candles, but also with the diameter of collecting gas bottle mouth. Factors affecting the experiment are considered, and an intuitive, safe and reliable experiment design with high success rate is proposed.

关 键 词：二氧化碳 阶梯蜡烛 实验探究 

分 类 号：G633.8[文化科学—教育学]