2008年海南中考化学试题及答案
海南省2008年初中毕业升学考试化学试题(与物理合场合卷)解题时可能用到的相对原子质量:H~1O~16Na~23Cl~35.5五、选择题(本大题共14小题,每小题只有一个选项符合题意。每小题3分,共42分)25.下列自然灾害发生时,其主要变化为化学变化的是:A.台风B.雪灾C山体滑坡.D.森林火灾26.空气中含量最多的气体是:A.二氧化碳.B.水蒸气C.氮气D.氧气27.下列物质在氧气中燃烧,生成黑色固体物质的是:A.铁丝B.木炭C.白磷D.硫粉28.下列符号能表示一种元素的是:A.COB.CC.CO2.D.C6029.有一首赞美某种气体的诗,其中的几句是:“她营造了云雾缭绕的仙景,她驱散了炎...
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