2019年广东省中考化学试卷.pdf

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1、化学试题第 1 页 共 7 页化 学说明:1.全卷共 6页,满分为100 分,考试用时为80 分钟。2.答卷前,考生务必用黑色字迹的签字笔或钢笔在答题卡填写自己的准考证号、姓名、考场号、座位号。用2B 铅笔把对应该号码的标号涂黑。3.选择题每小题选出答案后,用2B 铅笔把答题卡上对应题目选项的答案信息点涂黑,如需改动,用橡皮擦干净后,再选涂其他答案,答案不能答在试题上。4.非选择题必须用黑色字迹钢笔或签字笔作答、答案必须写在答题卡各题目指定区域内相应位置上:如需改动,先划掉原来的答案,然后再写上新的答案;不准使用铅笔和涂改液。不按以上要求作答的答案无效。5.考生务必保持答题卡的整洁。考试结束时

2、,将试卷和答题卡一并交回。6.可能用到的相对原子质量:H-1 O-16 F-19 Na-23 Mg-24 P-31 S-32一、选择题(本大题包括14 小题,每小题2 分,共 28 分。在每小题列出的四个选项中,只有一个是正确的,请将答题卡上对应题目所选的选项涂黑)1.下列现象不涉及化学变化的是A.蜡烛燃烧B.酒精挥发C.食物腐败D.塑料讲解2.“绿水青山就是金山银山”,垃圾分类处理有利于生态文明建设。废弃物中,易拉罐属于A.可回收物B.餐厨垃圾C.有害垃圾D.其他垃圾3.下列化学用语表示正确的是A.两个氢分子:2H B.三个氮原子:3N C.一个镁离子:Mg+2D.氢氧化钠中氧元素的化合价:

3、22ONa4.下列常见物质的PH 大于 7 的是A.食醋B.食盐水C.氨水D.柠檬水5.下列实验操作错误的是A.加热液体B.读取数据C.滴加试剂D.蒸发结晶6.下列物质属于纯净物的是A.死海B.稀盐酸C.洁净的空气D.冰水混合物化学试题第 2 页 共 7 页7.硒元素有防癌的作用。硒原子的结构示意图及硒元素在周期表中的信息如“题 7 图”所示。下列说法正确的是A.x 的数值为4 B.硒元素属于金属元素C.硒原子的质子数为34 D.硒的相对原子质量为78.96g8.下列物质的性质和用途对应关系错误的是A.金刚石硬度大,可制造钻头B.氮气的化学性质不活泼,常用作保护气C.铜有良好的导电性,可制作导

4、线D.氢氧化钠具有碱性,常用作改良酸性土壤9.化学肥料是农作物的“粮食”。下列关于化学肥料的说法正确的是A.尿素 CO(NH2)2属于复合肥料B.大量施用化肥以提高农作物的产量C.氨态肥料与草木灰混用,会降低肥效D.棉花叶片枯黄,应施用硫酸钾等钾肥10.电解水实验装置如“题 10 图”所示。下列说法正确的是A.电解前后元素种类不变B.实验说明水由H2和 O2组成C.反应的化学方程式为2H2O=2H2+O2D.a 管收集的气体能使燃着的木条燃烧更旺11.除去下列物质中的杂质,所选方法正确的是选项物质杂质除去杂质的方法AMnO2KCl加水溶解、过滤、蒸发BNaClNa2CO3加入足量的稀硫酸,蒸发

5、结晶CCO2CO通过氢氧化钠溶液DCCuO加入足量稀硫酸,过滤、洗涤、干燥12.探究铁生锈的条件,有利于寻找防止铁制品锈蚀的方法。下列对比试验设计与所探究的条件(蒸馏水经煮沸并迅速冷却),对应关系正确的是A.甲和乙:水B.乙和丙:空气C.甲和丙:空气D.甲和丁:水文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码

6、:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8

7、HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10

8、ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档

9、编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z

10、8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U1

11、0 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8

12、化学试题第 3 页 共 7 页13.下列实验操作、现象或变化、结论对应关系正确的是选项实验操作A取少量井水,加入适量肥皂水,振荡产生大量浮渣井水为硬水B称量镁条在空气中燃烧前后质量质量减少不遵循质量守恒定律C向盛有 NaOH 溶液的试管中滴加几滴酚酞溶液溶液变红色NaOH 溶液没有变质D将无色气体通入装有CuO 粉末的玻璃管一段时间后,加热黑色固体变红无色气体一定为H214.取一定量打磨后的铝片于某容器中,再逐渐加入稀盐酸。加入稀盐酸的质量与有关量的变化关系图错误的是A B C D二、填空题(本大题包括5 小题,共20 分。请把各题的答案填写在答题卡上)15.(3 分)“题 15 图”是某奶制

13、品标签。请回答(1)“钠”指的是(填“单质”或“原子”或“元素”)。(2)蛋白质、脂肪属于(填“无机物”或“有机物”)。(3)人体每日必须摄入足量的钙,幼儿及青少年缺钙会患(填字母)和发育不良。A.大脖子病B.佝偻病C.贫血D.夜盲症16.(4 分)近年比较流行的“自热火锅”给人们生活带来方便。“自然火锅”主要由料包和发热包(主要成分为生石灰、焙烧硅藻土、活性炭、铁粉、铝粉、碳酸钠等)组成,食用方法如“题 16 图”所示。请回答:(1)发热包发热的一种原理是生石灰与水反应放热。生石灰主要成分的化学式为_。(2)焙烧硅藻土、活性炭都有_的结构,能起到吸附作用。(3)“自热火锅”的内、外盒由聚丙烯

14、塑料材质制成,随意丢弃会带来 _问题。聚丙烯塑料属于_(填字母)。A.金属材料B.有机合成材料C.复合材料营养成分表项目每 100mL蛋白质3.6g脂肪4.4g碳水化合5.0g钠65mg钙120mg文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1

15、S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S

16、3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9

17、H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7

18、R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW

19、2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2

20、A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8化学试题第 4 页 共 7 页17.(5 分)“题 17 图”是三

21、种物质的溶解度曲线。请回答:(1)溶解度随温度升高而降低的是_;30 时溶解度最大的是 _。(2)80 硝酸钠饱和溶液的溶质质量分数为_。使硝酸钠不饱和溶液变为饱和溶液,可采取的措施有_(写一种)。(3)某硝酸钾固体中混有少量硫酸铈杂质,分离提纯硝酸钾的操作是:配成高温下硝酸钾饱和溶液、_、过滤、洗涤、干燥。18.(4 分)?11、?12、?13分别表示氢元素的三种原子,可简写成1H、2H、3H。制造燃料电池常用1H,制造氢弹要用2H、3H。请据“题 18 图”回答:(1)1H、2H、3H三种原子中,_数目不等(填“质子”或“中子”或“电子”)。(2)2H2与 O2反应生成的重水可表示为2H2

22、O。写出3H2在 O2中燃烧的化学方程式_。在“题 18-2 图”的小方框中,把3H2与 O2恰好完全反应的反应物微观粒子补画齐全。19.(4 分)燃烧是人类最早利用的化学反应之一。请回答:(1)按“题19 图”进 行 铁 丝 在O2中 燃 烧 的 实 验,反 应 的 化 学 方 程 式 为_。该 实 验 装 置 存 在 明 显 不 足,改 进 措 施 是_。(2)对比铁丝在空气中不能燃烧、在氧气中剧烈燃烧的现象,分析室内起火时,如果打开门窗,火会烧得更旺的原因_。文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4

23、X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1

24、S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S

25、3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9

26、H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7

27、R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW

28、2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2

29、A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8化学试题第 5 页 共 7 页三、(本大题包括2 小题,共15 分)20.(7)“题 20 图”表示元素的化合价与物质类别的关系,“”表示物质之间可以转化。A、B、C、D、E、F、G 是初中化学所学物质,分别由 H、O、S、Cl、K、Ba 中的一种、两种或三种元素组成。请回答:(1)A 和 E 的化学式分别是和。(2)D 和 G 反应的化学方程式为,此反应属(填基本反应类型)(3)AG 物质

30、间,发生中和反应的化学方程式为。21.(8 分)某合金主要成分为Zn、Fe、Cu 及这三种金属的少量氧化物。利用该合金制成的机械零件废弃物制取高纯度ZnO,其部分工艺流程如“题 21 图”所示。请回答:已知:Zn(OH)2溶于强碱形成可溶性盐。(1)滤渣 中一定有 _。(2)加酸溶解废弃物时,需要通风并远离火源,其原因是_。此过程中Zn还能起到除铜作用,除铜的化学方程式为_,此反应属_(填基本反应类型)。(3)调节 pH 可用 NaOH,但不能过量,其原因是_。(4)焙烧 Zn(OH)2发生分解反应的化学方程式为_。四、(本大题包括2 小题,共23 分)22.(12 分)根据“题 22 图”实

31、验装置,请回答:(1)仪器 a的名称是 _。(2)检查装置A 气密性的方法是夹紧止水夹,_,则气密性良好。(3)用 H2O2制取氧气,选择的发生装置为_(填字母),反应的化学方程式为_。(4)用装置 F 和另一仪器(除导管外)收集并测量O2体积,另一仪器名称为_,在 F 中气体应从导管_(填“b”或“c”)端通入。文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU

32、2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT

33、5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码

34、:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8

35、HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10

36、ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档

37、编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z

38、8 HU2A9H4X8U10 ZT5P7R1S7Y8化学试题第 6 页 共 7 页(5)实验室里,常用加热无水醋酸钠和碱石灰固体混合物的方法,制备甲烷。选择的发生装置为_(填字母)。用装置 E 收集甲烷,利用了甲烷_的物理性质;用装置C 而不用装置D 收集甲烷,原因是_。设计实验证明CH4中含有氢元素:检验其纯度后,_。23.(11 分)某化学兴趣小组用石灰石和盐酸制取一瓶CO2,验满后,将澄清石灰水倒入集气瓶中,发现没有变浑浊。兴趣小组对这个异常现象进行了探究。【提出问题】澄清石灰水为什么没有变浑浊?【查阅资料】(1)CO2过量时,CaCO3沉淀会转化为可溶于水的Ca(HCO3)2。(2)A

39、gCl 不溶于稀硝酸。【提出猜想】.石灰水已完全变质._.CO2中混有 HCl【实验方案】兴趣小组用原药品继续制取CO2,并进行探究。制备CO2的化学方程式为_。步骤实验操作实现现象结论及化学方程式(1)取少量澄清石灰水于试管中,加入_溶液。产生白色沉淀。猜想 不成立。(2)将少量气体通入盛有澄清石灰水的试管中。_猜想 不成立。(3)将气体通入盛有_溶液的试管中,再加稀硝酸。_猜想 成立,反应方程式为_。【实验结论】制取CO2气体中混入了HCl,所以澄清石灰水没有变浑浊。【实验结论】若要收集到纯净、干燥的CO2,需将混合气体依次通入饱和NaHCO3溶液和_。【拓展思考】回忆课本中收集呼出气体的

40、操作后,同学们常试用排水法收集一瓶CO2,倒入澄清石灰水后,石灰水变浑浊。你认为该实验成功的原因是_(写一点)。五、(本大题包括2 小题,共14 分)24.(4 分)“题 24 图”为某牙膏的部分标签,活性成分单氟磷酸钠的化学式为Na2PO3F(相对分子质量为144),请回答下列问题:(1)人体中 F 属于 _(填“微量”或“常量”)元素。(2)Na2PO3F中 金 属 元 素 与 氧 元 素 的 质 量 比 为_。(3)若牙膏中其它成分不含氟,则每支这种牙膏中,含Na2PO3F 的质量为 _g(结果保留小数点后一位)。25.(10 分)Mg(OH)2具有广泛的应用,常用菱镁矿制备。研究人员向

41、一定质量的菱镁矿粉中加入过量的稀硫酸,充分溶解后除杂、过滤,得到只含MgSO4和 H2SO4的混合溶【主要活性成分】单氟磷酸钠【摩擦剂】碳酸钙【香型】清爽薄荷【氟含量】0.14%【净含量】200g文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S

42、7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3

43、S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H

44、4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R

45、1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2

46、S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A

47、9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8化学试题第 7 页 共 7 页液,为确定混合溶液中镁的含量,取4 份

48、混合溶液各100g,向每份混合溶液中加入一定质量的4%NaOH 溶液,得到实验数据如下表所示:实验编号NaOH 溶液质量/g10.020.030.040.0Mg(OH)2溶液质量/g0.2320.5220.5800.580(1)实验 _(填实验编号)中硫酸镁完全反应。(2)计算 100g 混合溶液中含MgSO4的质量(写出计算过程)。(3)分析实验数据,在“题 25 图”中,画出加入4%NaOH 溶液质量 030.0g 过程中,产生 Mg(OH)2沉淀质量对应的变化图,并标注必要的数值。文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X

49、2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8

50、U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7Y8文档编码:CW2S3S4X2Z8 HU2A9H4X8U10 ZT5P7R1S7

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