论文部分内容阅读
气体的制取是中考化学必考知识点,一般是考查实验室制备O2、CO2、H2的原理、装置的选择与评价、气密性检查以及气体的检验与净化。因此,对相关考点进行了全面梳理并练习解答典型例题,是初中化学总复习中不可或缺的环节。
The preparation of gas is a necessary knowledge of the examinations for the examination of the senior high school entrance examination. Generally, the principle of laboratory preparation of O2, CO2 and H2, the selection and evaluation of the apparatus, the airtightness inspection and the gas examination and purification are generally examined. Therefore, a comprehensive review of the relevant test centers and practice to answer typical examples, is an integral part of junior high school chemistry review link.