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一、改进与创新设计的原因焰色反应是指某些金属或它们的化合物在灼烧时使火焰呈现特殊颜色的现象。全日制普通高中化学教科书(必修)(人教版2003年6月第1版)第1册第38页中关于焰色反应实验的操作方法是:“用洁净的铂丝蘸取少量某金属粉末、金属化合物粉末或金属化合物水溶液,放在酒精灯的火焰上灼烧,观察火焰的颜色。”通过课堂演示实验教学,笔者发现该实验存在以下缺点:
First, the reasons for the improvement and innovative design Flame reaction is that some metals or their compounds in the burning flame special color phenomenon. Full-time ordinary high school chemistry textbook (compulsory) (PEP June 2003 1st edition) Volume 1 page 38 on the flame reaction test method is: “with a clean platinum wire dipped in a small amount of a metal Powder, metal compound powder or aqueous metal compound solution, put it on the flame of the alcohol lamp and observe the color of the flame. ”Through the demonstration of experiment teaching in the classroom, the author found that the experiment has the following disadvantages: