在初中化学实验教学中,借助生活中的一些日常用品改进实验,常常可以使学生更直观地观察到实验现象,而且能激发学生对实验的兴趣,本文结合本人在实验教学中的一些做法,谈谈小气球在初中化学实验中的应用。一、一氧化碳还原氧化铁实验中收集尾气工业上炼铁的原理是利用一氧化碳与氧化铁的反应,在实验室里,利用图1装置进行实验时,为了防止未反应的一氧化碳排放到空气中造成污染,可以利用一只小气球收集尾气代替用酒精灯燃烧尾气,可以使学生直观感受到实 In junior high school chemistry experiment teaching, with some daily life improvement experiments, students often can observe the experimental phenomena more intuitively, and can stimulate students’ interest in the experiment. This article combined with my practice in experimental teaching, Application of Small Balloon in Junior High School Chemistry Experiment. First, the reduction of iron oxide carbon monoxide collection experiment Experimental collection of iron in the industry principle is the use of carbon monoxide and iron oxide reaction in the laboratory, the use of Figure 1 device experiments, in order to prevent unreacted carbon monoxide emissions into the air pollution , You can use a small balloon to collect exhaust instead of using alcohol lamp combustion exhaust, students can visually feel the real