2018年中考化学真题分类汇编1物质的构成和变化考点6化学用语3化学式的组成和构成2选择题3图形题目(无答案).doc

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2018年中考化学真题分类汇编1物质的构成和变化考点6化学用语3化学式的组成和构成2选择题3图形题目(无答案).doc_第1页
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1化学用语(18 金华)6如图是微信热传的“苯宝宝表情包” ,苯(化学式 C6H6) 、六氯苯(化学式C6Cl6)都是重要的化工原料,下列有关说法正确的是( )A苯分子由碳、氢两种元素组成B苯中氢元素的质量分数小于 10%C六氯苯中碳氯两种元素的质量比为 1:1D六氯苯由 6个碳原子和 6个氯原子构成

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