二氧化碳的性质是教材中的主干知识,围绕二氧化碳性质的探究一直是中考命题的热点,备受命题者的青睐。从二氧化碳与水反应的探究可衍变出SO_2、NH_3与水反应的探究,此类试题多以一组对比实验出现,解题时注意控制变量,根据信息学会类比迁移,可以提高我们发现问题、提出问题和解决问题 The nature of carbon dioxide is the backbone knowledge in the teaching materials. The exploration around the nature of carbon dioxide has always been the focus of the topic of the examination and is highly favored by propositioners. From the exploration of the reaction of carbon dioxide and water, the exploration of the reaction between SO_2, NH_3 and water can be explored. Such a series of tests are often presented with a set of comparative experiments. Attention to control variables when solving problems, according to the analogical migration of information society, can improve the problems we find and propose Problems and problem solving