2017年辽宁省朝阳市中考化学试题(空白卷)
2017年辽宁省朝阳市中考化学试卷一、选择题(本题共12个小题。1~8小题,每题1分。9~12小题,每题2分,共16分。每小题只有一个最符合题目要求的选项。)1.(1分)下列变化中与另外三个有本质区别的是( )A.铁生锈B.蜡烛熔化C.纸张燃烧D.大麦酿酒2.(1分)人体呼出的气体与吸入的空气相比,含量没有明显变化的是( )A.N2B.O2C.CO2D.H2O3.(1分)地壳中含量最多的金属元素是( )A.OB.SiC.AlD.Fe4.(1分)用如图所示的简易净水器处理浑浊的河水,下列对该净水器分析正确的是()A.能得到纯净的水B.能杀菌消毒C.能除去MgSO4等可溶性杂质D.活性炭主要...
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