江苏省南通市2017年中考化学真题试题(含答案)
南通市2017年初中毕业、升学考试试卷化学本卷可能用到的相对原子质量:H—1C—12O—16Cl—35.5Fe—56Cu—64I—127第Ⅰ卷(选择题共20分)第Ⅰ卷共10小题,每小题2分,共20分。每小题只有一个选项正确。11.2017年5月18日南海可燃冰试采成功,这是中国科学家勇攀世界科技高峰的又一标志性成就。1体积可燃冰可储载100~200倍体积的甲烷气体。甲烷属于()A.有机物B.单质C.氧化物D.混合物12.下列有关物质的组成或分类说法正确的是()A.金刚石、C60都是碳的化合物B.水、过氧化氢都含有相同组成元素C.碳酸氢铵、硫酸钾都是氮肥D.钙、氧都是人体必需的微量元素13.“一...
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