2012年湖南省株洲市中考化学试卷(学生版) 学霸冲冲冲shop348121278.taobao.com_20200611_181644
2012年湖南省株洲市中考化学试卷一、选择题(以下各题均只有一个正确答案,每小题2分,共40分)1.(2分)下列物质属于纯净物的是( )A.盐酸B.蒸馏水C.铝合金D.石灰石2.(2分)下列变化中属于物理变化的是( )A.潮湿的衣服经太阳晒干了B.铜在潮湿的空气中有绿色物质生成C.花生米霉变了D.银白色的镁条在空气中慢慢失去光泽3.(2分)已知:2Al+Fe2O3Al2O3+2Fe,该反应放出大量的热量使得生成的铁融化,可以用于野外焊接钢轨,该反应的基本类型属于( )A.化合反应B.分解反应C.置换反应D.复分解反应4.(2分)自然界的水因含有许多杂质而需要净化,下列操作中不能使水得到净...
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