黑龙江省齐齐哈尔市2020年初中毕业学业统一考试化学试卷（原卷版）
【内容简介】1.下列变化中属于化学变化的是A. 纸张燃烧B. 水结成冰C. 汽油挥发D. 玻璃破碎2.下列所示实验操作正确的是（ ）A. 点燃酒精灯 B. 测定溶液pH值 C. 闻药品气味 D. 倾倒液体 3.下列有关实验现象的描述正确的是（）A. 红磷在空气中燃烧，产生大量白雾B. 铁丝在空气中燃烧，火星四射，生成黑色固体C. 向氢氧化钠溶液中加入硫酸铜溶液，产生蓝色沉淀D. 氯化铵和熟石灰混合研磨生成氯化钙、氨气和水4.学校防控新冠肺炎所用消毒液成分之一是次氯酸钠，以下反应可生成次氯酸钠， ，其中X的化学式为（）A. NaClOB. Na2OC. NaOHD. NaClO35.下列物质的用途主要利用其物理性质的是A. 焦炭用于冶炼金属B. 盐酸用于金属表面除锈C. 碳酸氢钠用于治疗胃酸过多症D. 干冰用于人工降雨6.煤气厂常在家用煤气（含有一氧化碳）中掺入微量具有难闻气味的乙硫醇（C2H5S），一旦煤气泄漏，容易引起人们警觉。下列关于乙硫醇的说法正确的是（）A. 乙硫醇由碳、氢、硫三种元素组成B. 乙硫醇中含有硫单质C. 乙硫醇由9个原子构成D 乙硫醇中氢元素质量分数最大7.下列宏观事实的微观解释错误的是（）A. 墙内开花墙外香——分子是不断运动的B. 6000升氧气在加压的情况下可装入容积为40升的钢瓶中——分子体积变小C. 硫酸、盐酸有一些相似的性质原因——不同的酸溶液中都含有氢离子D. 一氧化碳能燃烧二氧化碳不能燃烧——分子构成不同8.下列关于空气成分的说法错误的是A. 氧气约占空气总体积4/5B. 稀有气体可制成多种用途的电光源如霓虹灯C. 氮气充入食品包装中以防腐D. 二氧化碳在大气中含量不断上升，从而导致温室效应增强9.下表中对有关化学知识的整理和归纳错误的是（）......
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