2014年河南省中考化学试卷及答案
2014年河南省普通高中招生考试试卷化学注意事项:1.本试卷共4页,四个大题,满分50分,考试时间50分钟。请用蓝、黑色水笔或圆珠笔直接答在试卷上。2.答卷前将密封线内的项目填写清楚。题号一二三四总分分数相对原子质量H:1C:12O:16Na:23A1:27S:32C1:35.5Ca:40Cu:64Ag:108一、选择题(本题包括12个小题,每小题1分,共12分)下列各题,每题只有一个选项符合题意,请将正确选项的标号填入题后括号内。1.下列变化过程中,一定发生了化学变化的是【】A.蒸馏B.升华C.爆炸D.燃烧2.下列物质排放到空气中,不会造成大气污染的是【】A.SO2B.O2C.COD.NO2...
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