2013年湖南省株洲市中考化学试卷(学生版) 学霸冲冲冲shop348121278.taobao.com
2013年湖南省株洲市中考化学试卷一、选择题(本题共20小题,每小题2分,共40分.每小题只有一个选项符合题意)1.(2分)下列现象一定是化学变化的是( )A.瓷碗破碎B.酒精挥发C.石蜡熔化D.纸张燃烧2.(2分)下列物质属于纯净物的是( )A.石油B.波尔多液C.啤酒D.冰水混合物3.(2分)鸡蛋壳的主要成分是碳酸钙,将一个新鲜的鸡蛋放在盛有足量稀盐酸的玻璃杯中,可以观察到鸡蛋冒气泡,该气泡的主要成分是( )A.H2B.CO2C.O2D.N24.(2分)下列物质溶于水时,吸收热量的是( )A.NH4NO3固体B.生石灰C.KOH固体D.苛性钠5.(2分)下列物质属于有机高分子材料的...
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