2018年中考化学真题分类汇编1物质的构成和变化考点2元素与元素周期表的简单应用1元素2元素的存在和性质(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2元素与元素周期表的简单应用1元素2元素的存在和性质(无答案).doc_第1页
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1考点 2 元素与元素周期表的简单应用(18 北京)2、下列含金属元素的物质是( )A.H2SO4 B.Al2O3 C.NO2 D.P2O5(18 潍坊)1人体缺铁会引起缺铁性贫血。这里“铁”一般是指( )A元素 B单质 C原子 D分子(18 雅安)4.豆腐是营养丰富的食物,每 100 g豆腐中平均含磷 119 mg。这里的“磷”指的是A磷元素 B磷单质 CP 2O5 D磷的化合物(18 临沂)5.市场上有“葡萄糖酸锌”、“高钙牛奶”、“绿色碘盐”等商品,这里的“锌、钙、碘”指的是A.元素 B.分子 C.单质 D.原子(18 青岛) 6动 物的 肝脏 和坚 果类 食 物中含 有丰 富的 铁和 锌, 这里的 “铁 ”和 “锌 ”是指A 分子 B 元素 C 原子 D 单质( 18 益 阳 ) 11下列有 关元素的说法 的是A原子的质子数不同,则元素种类不同 BCl 与 Cl 可以相互转化C元素可分为金属元素和非金属元素 D混合物中一定含有多种元素

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