贵州省黔东南州2017年中考理综(化学部分)真题试题(含解析)
2017年贵州省黔东南州中考化学试卷一、选择题(每小题只有一个选项符合题意,每小题2分,共16分)1.下列过程中发生物理变化的是( )A.可燃冰燃烧B.铁钉生锈C.矿石粉碎D.光合作用2.下列试验操作中,不正确的是( )A.熄灭酒精灯B.取用固体粉末C.读液体体积D.滴加液体3.分类是学习和研究化学的常用方法,下列物质分类正确的是( )A.有机物:甲烷、二氧化碳B.盐类:烧碱、纯碱C.混合物:自来水、冰水共存物D.氧化物:水、二氧化锰4.如图为某反应的微观示意图,其中代表不同元素的原子.下列说法正确的是( )1A.有五种分子参加反应B.有两种分子参加反应且个数比为3:1C.各元素的化合...
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