贵州省安顺市2017年中考理综(化学部分)真题试题(含答案)
贵州省安顺市2017年中考理综(化学部分)真题试题一、选择题(本题共6个小题,每小题2分,共12分.每小题只有一个选项符合题意,请将各小题选出的答案序号在答题卡的相应位置上填涂。)1.宣纸是中国文房四宝之一,其制作工艺被列入我国首批非物质文化遗产名录。下列关于宣纸的传统制作工序中,主要发生化学变化的是:A.挑选原料B.加碱腌煮C.竹帘捞纸D.剪裁纸张2.下列符号中,既表示一个原子,又表示一种元素,还能表示一种物质的是:A.HeB.N2C.HD.2O23.在化学反应前后,物质所含元素化合价发生变化的反应属于氧化还原反应。氧化还原反应与四种基本化学反应类型间的关系如图所示,下列举例中错误的是:A....
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