2012年贵州省贵阳市中考化学试卷及答案
2012年贵州省贵阳市中考化学试卷一.化学选择题（本题包括6个小题，每小题2分，共12分。每小题均只有一个选项符合题意。）1.下列关于空气的说法错误的是A.木条在空气中燃烧属于物理变化B.空气是混合物[来源:学+科+网Z+X+X+K]C.空气中含量最多的气体是氮气D.二氧化碳排放到空气中会导致温室效应2.环境和资源是人类生存的基本条件。下列选项前后关系不正确的是A.保护金属资源—防止铁制品生锈B.提高粮食产量-合理使用农药和化肥C.减少环境污染—大量使用化石燃料D.减少水体污染—禁止使用含磷洗衣粉3.对物质进行归类整理，是化学学习的一种重要方法。下列归类关系不相符的是A.不锈钢—金属材料B.维...
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