江苏省南通市2012年中考化学试题及答案
南通市2012年初中毕业、升学考试试卷化学可能用到的相对原子质量:H—lC—12O—l6I—12711.下列做法有利于保护环境的是A.开发洁净能源B.丢弃废旧电池C.大量使用化肥D.焚烧废弃塑料12.进行木炭在氧气中燃烧的实验有以下四个步骤,其中一定没有发生化学变化的是13.对物质组成结构的认识错误的是A.构成物质的粒子之间一定存在间隙B.酸碱的组成中,一定含有氢氧元素C.原子中质子数一定等于核外电子数D.化学变化中分子可以再分而原子不可分14.下列实验基本操作正确的是15.锂电池是一种新型的高能电池。某种锂电池的总反应式可表示为:Li十Mn02==LiMnO2下列说法正确的是A.Mn02在该...
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