2022年河北省中考化学真题及答案
机密★启用前2022年河北省初中毕业生升学文化课考试化学试卷可能用到的相对原子质量:H—1C—12O—16S—32Cu—64Zn—65一、选择题(每小题的四个选项中,只有一个选项符合题意,每小题2分)1.蛋白质是人体所需的重要营养物质。下列食物富含蛋白质的是A.鸡蛋B.白菜C.大米D.苹果2.图1所示为实验室制取二氧化碳的部分操作,其中错误的是3.下列有关空气的说法错误的是A.空气是一种宝贵的资源B.空气中含有稀有气体C.空气中的氧气极易溶于水D.空气中氮气的体积分数最大4.金银花作为一种中药具有悠久的历史,其有效成分之一是绿原酸(C16H18O9)。下列说法错误的是A.绿原酸属于有机物B.绿...
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