2010年吉林省中考化学试题及答案
2010年吉林省中考化学试题可能用到的相对原子质量:H-1O-16Mg-24S-32一、单项选择题:(每小题1分,共8分)1、在小明所做的下列实验中,发生了化学变化的是()A.蒸发食盐水B.查气密性C.过滤液体D.电解水2、医疗上常用空气中含量最多的气体制成冷冻麻醉剂,该气体是()A.氮气B.氧气C.稀有气体D.二氧化碳3、掌握物质的分类是学好化学的基础,请指出下列物质中属于碱的是()A.FeCl3B.HNO3C.KOHD.Ag4、生石灰可做干燥剂,干燥原理为CaO+H2O===Ca(OH)2,其基本反应类型是()A.分解反应B.化合反应C.置换反应D.复分解反应5、化学与生活紧密相联,对下列...
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