2018年中考化学真题分类汇编1物质的构成和变化考点3物质的分类1具体概念(混合物、纯净物、单质、化合物、氧化物)(无答案).doc

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2018年中考化学真题分类汇编1物质的构成和变化考点3物质的分类1具体概念(混合物、纯净物、单质、化合物、氧化物)(无答案).doc_第1页
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1、1物质的分类(18 桂林)8. 下列属于混合物的是( )A.铜 B.氮气 C.海水 D.氯化钠(18 苏州)3、下列物质属于纯净物的是A.空气 B.生铁 C.硬水 D.氧气(18 荆州)2下列物质属于纯净物的是( )A空气 B河水 C臭氧 D石油(18 青岛)2下 列物 质属 于纯 净物 的 是A 石油 B 海水 C 水银 D 空气(18 广安)2、下列物质属于纯净物的是A.食盐水 B.豆浆 C.冰水混合物 D.水泥砂浆(18 聊城)1.下列物质属于纯净物的是A.白酒 B.碘盐 C.液氧 D.食醋(18 泰安)2、下列物质中。属于纯净物的是A.空气 B.煤 C.蒸馏水 D.赤铁矿石(18 临沂

2、)1.下列几种常见的物质中,属于纯净物的是2A.碘酒 B.空气 C.氧化钙 D.生铁(18 梧州)3下列物质属于单质的是( )A. Mg B. Al2O3 C. H2CO3 D KMnO4(18 铜仁)2. 下列物质属于单质的是( )A.水 B.空气 C.泥土 D.氢气(18 甘肃)1.分类是学羽化学的重要方法。下列物质属于氧化物的是A.O2 B. H2 O C. KCl D.H2SO4(18 盐城)4.下列物质属于氧化物的是A纯碱(Na 2CO3) B酒精(C 2H5OH) C干冰(CO 2) D.苛性钠(NaOH)( 18 益 阳 ) 5下列物质 属于氧化物的是AKMnO 4 BNaOH CSO 2 DHNO 3( 18 海 南 ) 6下列物质 属于氧化物的是AKMn O4 BKOH CO 3 DCO(18 南宁)9在普通玻璃中加入 Cu2O,可以制成红色玻璃。Cu 2O 属于( )A氧化物 B有机物 C混合物 D单质

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