精品解析:2023年北京市中考化学真题 (解析版)
【淘宝搜索店铺:中小学教辅资源店微信:mlxt2022】2023年北京市初中学业水平考试化学试卷考生须知1.木试卷共8页,共两部分,共39题,满分70分。考试时间70分钟。2.在试卷和草稿纸上准确填写姓名、准考证号、考场号和座位号。3.试题答案一律填涂或书写在答题卡上,在试卷上作答无效。4.在答题卡上,选择题、画图题用2B铅笔作答,其他试题用黑色字迹签字笔作答。5.考试结束,将本试卷、答题卡和草稿纸一并交回。可能用到的相对原子质量:H1 C12 O16 Al27第一部分本部分共25题,每题1分,共25分。在每题列出的四个选项中,选出最符合题目要求的一项。1.空气成分中,体积分数最大的是( )...
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