江苏省南通市2014年中考化学试题及答案
2014年江苏省南通市中考化学试题11.(2014年江苏省南通市,11题)未成年人正处于生长发育阶段,需要摄入比成年人更多的常量元素是A.钙B.硒C.碘D.锌12.(2014年江苏省南通市,12题)粗盐提纯需经过称量、溶解、过滤、蒸发等操作,下列图示对应的操作不规范的是A.称量B.溶解C.过滤D.蒸发13.(2014年江苏省南通市,13题)水是最常见的物质。以下与水有关的说法正确的是A.地球上水资源丰富,人类不缺淡水B.水由2个氢原子和1个氧原子构成C.生活中可以用食盐水区分硬水和软水D.水在通电条件下可分解为氢气和氧气14.(2014年江苏省南通市,14题)下列物质的名称、化学式、分类均正确...
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