初三学生观察化学老师演示氢氧爆鸣实验时，会异常的兴奋。该实验现象对学生今后学习化学的兴趣培养，起着很重要的作用。如能将实验改进，使得每个同学都能方便地自己动手实验。更能加深学生的印象，驱使学生探个究竟。受洗衣服时泡沫中空气的启发，我们设计用泡沫来收集氢气 When the junior high school student observes the chemistry teacher’s demonstration of the hydrogen and oxygen bursting test, he will be unusually excited. This experimental phenomenon plays an important role in students’ interest in learning chemistry in the future. If you can improve the experiment, so that each student can easily hands-on experiments. It can deepen students’ impressions and drive students to find out exactly. Inspired by the air in the foam when washing clothes, we designed to collect hydrogen with foam