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2018年中考化学真题分类汇编3化学实验与探究考点15化学实验常用仪器和基本操作3综合实验木条的使用（无答案）.doc

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2018年中考化学真题分类汇编3化学实验与探究考点15化学实验常用仪器和基本操作3综合实验木条的使用（无答案）.doc_第1页
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1化学实验常用仪器和基本操作（18 巴中）23、化学实验中常用到木条或火柴梗，下列实验方案或操作不能达到目的的是A.用带火星的木条检验氧气B.用燃着的木条区分氮气和二氧化碳C.用木条蘸少量浓硫酸验证浓硫酸有腐蚀性D.把火柴梗迅速平放入蜡烛火焰中，约 1 秒后取出，比较火焰各层温度

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