2018年中考化学真题分类汇编3化学实验与探究考点16常用的化学实验技能3实验方案2实验装置(无答案).doc

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1常用的化学实验技能(18 吉林)9.下列实验设计能够实现其对应实验目的的是(18 齐齐哈尔)8.根据下列实验方案进行实验,不能达到相应实验目的的是A.测定空气中氧气的含量 B.检验氧气是否收集满C.验证物质燃烧需要氧气 D.探究影响物质溶解性的因素(18 娄底)12下列实验能达到实验目的是( )(18 广州)12.下列实验方案,不能达到相应实验目的的是2A比较空气与人体呼出的气体中 CO2含量 B探究 MnO2能否加快 H2O2分解C验证燃烧需要温度达到着火点 D探究 CO2对铜生锈是否有影响(18 呼和浩特)7下列实验设计不能达到实验目的的是选项 A B C D实验目的除去 CO 中的CO2,并回收 CO探究可燃物燃烧所需的条件除去氧化铜粉末中的铜粉鉴别 NH4NO3、CuSO 4和NaCl 三种白色粉末实验设计(18 河南)7.下列实验设计不能达到其对应实验目的的是 【 】A.测定空气里 B.检查装置的 C.验证质量守恒定律 D.证明 CO2密度氧气的含量 气密性 比空气的大

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