2021年吉林省中考化学真题(原卷版)
2021年吉林省中考化学试卷一、单项选择题(每小题1分,共10分)1.(1分)华夏造物历史悠久,《天工开物》中记载的下列造物过程涉及化学变化的是()A.炼生铁B.晒海盐C.钉木舟D.织衣布2.(1分)空气成分中可用于医疗急救的是( )A.氮气B.氧气C.稀有气体D.二氧化碳3.(1分)下列各种“水”中属于纯净物的是( )A.矿泉水B.自来水C.湖泊水D.蒸馏水4.(1分)下列实验操作正确的是( )A.量取液体B.验满气体C.滴加液体D.测溶液pH5.(1分)下列对物质用途的描述错误的是( )A.用生石灰作发热剂B.干冰用于人工降雨C.用氢氧化钠治疗胃酸过多D.碳酸氢钠用于焙制糕点6.(...
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