化学是初中学生必学的科目之一,在初中化学教学中,实验法是常用的教学方法,离开了实验,化学教学是无法继续进行的。有关二氧化碳、氧气、氢气等常见气体的相关知识是初中化学教学的重点内容。本文中笔者重点介绍几种具有代表性的常见气体的性质和收集方法。一、初中化学中的几种常见气体及其性质分析1.二氧化碳二氧化碳是一种看不见、闻不着的气体,易溶于水,可用 Chemistry is one of the subjects junior high school students must learn. In junior high school chemistry teaching, the experimental method is a common teaching method. Without the experiment, the chemistry teaching can not be continued. Related knowledge of carbon dioxide, oxygen, hydrogen and other common gases is the focus of junior high school chemistry teaching. In this paper, the author focuses on several representative of the common gas properties and collection methods. First, junior high school chemistry in several common gases and their properties 1. Carbon dioxide Carbon dioxide is an invisible, smell gas, soluble in water, available