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yan se fan ying shi yan de xin xing she ji
Author(s): 
Pages: 33-34
Year: Issue:  10
Journal: Experiment Teaching and Apparatus

Keyword:  焰色反应实验改进新型设计;
Abstract: 焰色反应是中学化学教学中一个重要的实验,教材实验步骤繁琐,铂丝(铁丝)需要反复洗烧,且铂丝价格昂贵,现象也不明显。为此,对该实验进行创新设计,选用小瓷坩埚、铝质饮料罐、小高脚玻璃酒杯作为容器,采取固体金属盐滴加酒精直接引燃法,能除杂色干扰,显色时间长,同时可给不同金属进行焰色比色,能重复使用,演示时只需滴加酒精引燃即可,给教师教学带来方便。
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