江苏苏州中考化学试卷

江苏苏州中考化学试卷
江苏苏州中考化学试卷

江苏苏州中考化学试卷 Modified by JACK on the afternoon of December 26, 2020

选择题(共50分)

(18苏州)1、 2018世界环境日中国确定的主题是“美丽中国,我是行动者”,下列做法符合这一主题的是

A.作物秸秆露天焚烧

B.废旧塑料随意丢弃

C.废旧电池就地填埋

D.生活垃圾分类回收(18苏州)2、新能源的开发利用是人类社会可持续发展的重要课题。下列属于新能源的是

A.天然气

B.石油

C.氢气

D.煤

(18苏州)3、下列物质属于纯净物的是

A.空气

B.生铁

C.硬水

D.氧气

(18苏州)4、下列化学仪器对应的名称正确的是

A.燃烧匙 B分液箱斗 C试管夹 D.烧杆

(18苏州)5、下列变化属于化学变化的是

A.冰雪融化

B.光合作用

C.汽油挥发

D.铁丝弯曲

(18苏州)6、下列过程吸收热量的是

A.氢氧化钠固体溶丁水

B.硝酸铵固体溶于水

C.把水加入生石灰中

D.氢氧化钠溶液与稀硫酸反应(18苏州)7、下列有关化学用语表示正确的是

A.氯原子结构示意图:个氢离子:2H2+

C.酒精的化学式C

2H

6

O

(18苏州)8、化学让我们的生活更美好,科学家为此作出了很大的努力,其中在制碱工业作出巨大贡献的是

A.拉瓦锡?

B.门捷列夫?

C.汤姆生?

D.侯德榜

(18苏州)9、下列人体所缺元素与引起的健康问题关系正确的是

A.缺铁会引起贫血?

B.缺碘会引起龋齿

C.缺锌会导致甲状腺疾病?

D.缺钙会引起坏血病

(18苏州)10、水是生命之源,下列物质的化学式可用“H2O”表示的是

A.冰?

B.可燃冰?

C.下冰?

D.水银

(18苏州)11、下列气体的排放会导致酸雨形成的是

A.N

2

B.CO

C.

SO

2

D.

O

2

(18苏州)12、下列标志属于中国节能标志的是

(18苏州)13、下列关于浓硫酸的说法正确的是

A.易挥发?

B.有腐蚀性

C.无吸水性

D.密度比水水

(18苏州)14、下列有关物质用途的说法正确的是

A.明矾可用作净水剂?

B.聚氯乙烯可用来包装食品

C.氢氧化钠可用来治疗胃酸过多?

D.铝制容器可用来长期存放酸性食物(18苏州)15、下列有关实验现象的描述正确的是

A.红磷在空气中燃烧,产生大量白色烟雾

B.用粗砂纸打磨后的铝片放入硫酸铜溶液中,一段时间后,划痕处出现红

色物质

C.铁丝在氧气中剧烈燃烧,火星四射,生成红色固体

D.向滴有石蕊的稀盐酸中滴加氢氧化钠溶液至过量,溶液有监色变紫色再

变红色

(18苏州)16、下列实验操作正确的是

17、

B维生素是人体不可缺少的营养物质 C.油脂属于有机高分子化合物

D.蛋白质中只含有碳、氢、氧三种元素

(18苏州)18、《茉莉花》是一首脍炙人口的苏南民歌。茉莉花香气的成分有多种,乙酸苯甲酯(C9H10O2) 是其中的一种。下列关于乙酸苯甲酯的说法正确的是

A.乙酸苯甲酯的相对分子质量为150g

B.乙酸苯甲酯由碳、氢、氧三种元素组成

C.乙酸苯甲酯中碳、氢、氧三种元素质量比为9: 10: 2

D.乙酸苯甲酯分子由碳原子、氢原子、氧分子构成

(18苏州)19、下列说法正确的是

A.空气中氧气的体积分数约为21%

B.洗涤油污可用汽油乳化

C.电解水实验说明水是由氢气和氧气组成的

D.可燃物只要与氧气充分接触就能燃烧

(18苏州)20、某溶液中存在较多的H+、SO42-、CI-,该溶液中还可能大量存在的离子是

+++

(18苏州)21、高锰酸钾和浓盐酸发生如下应:

2KMnO

4+16HCl=2KCl=2MnCl

2

+?5X↑+8H

2

根据质量守恒定律,推测X应是

(18苏州)22、下列实验方案能达到目的的是

A.用氢氧化钠溶液除去二氧化碳中的氯化氢

B.用硫酸铜溶液检验葡萄糖的存在

C.用稀硫酸除去铜屑中的少革铁屑

D.用碳酸钾溶液去区别石灰水和氯化钙溶液

(18苏州)23、下图所示的化学反应基本类型是

A.化合反应 B分解反应 C.置换反应 D.复分解反应(18苏州)24、下列选项所示的物质间转化均能一步实现的是

(OH)

2

(18苏州)25、一定质量的某有机化合物完全燃烧,生成和,另取该有机化合物在O2中完全燃烧,消耗,该有机化合物的化学式可能是

非选择题(共50分)

(18苏州)26、(5分)请用线段连接有对应关系的相邻两行间的点(每个点只能连接1次)

(18苏州)27、(5分)生活中处处有化学,化学已渗透到我们的“衣、食、住、行、医”中。

(1)衣:区分羊毛线和棉纱线的方法是灼烧,羊毛线燃烧时能闻到

_________气味。

(2)食:维生素C能增强人体对疾病的抵抗能力,中学生每天要补充60mg 的维生素C,下列物质富含维生素C的是____(填字母)

A.橙子

B.猪肉

C.面粉

(3)住:下列属丁直接利用太阳能辐射加热物体而获得热能的是

________(填字母)。

A.石蜡燃烧

B.太阳能热水器

C.燃料电池

(4)行:城市交通中大力推广新能源汽车对于改善空气质量的好处是

____________。

(5)医:出现低血糖症状时需要尽快补允简萄糖,葡萄糖的化学式是

________。

(18苏州)28、(5分)根据下列反应事实写出相应的化学方程式。

(1)稀硫酸与锌粒反应制氢气:___________,

(2)金属铝与氧气反应生成氧化膜:________________;

(3)碳酸钙在高温下分解:________________;

(4)石灰水与硫酸铜溶液反应:________________;

(5)甲烷在足量氧气中充分燃烧:________________;

(18苏州)29、(8分)硝酸钾是实验室常见的一种试剂。

(1)硝酸钾是由___和___构成的(填写微粒符号)。

(2)硝酸钾中钾元素的质量分数是__________(结果用百分数表示,保留到%)。

(3)右图是硝酸钾的溶解度曲线,由图可以总结出硝酸钾的溶解度随温度变化的趋势是_________。60℃时110g硝酸钾溶于100g水中形成的溶液是____(选填“饱和“或“不饱和”)溶液,将此时配得的溶液降温至20℃,析出硝酸钾晶体的质量是___g。

温度/℃

(4)列式计算:用100g10%的硝酸钾溶液配制5%的硝酸钾溶液。需要加水

多少亳升(

水的密度为·mL-1)

(18苏州)30、(6分)从大理石(主要杂质是氧化铁)中提纯碳酸钙的一种实验流程如下:

((1)反应池I中用硝酸不用稀硫酸的主要原因是______________。

(2)反应池II中加入氨水的目的是______________。

(3)反应池III用生成碳酸钙的化学方程式是______________。

(4)过滤II中所得滤液在农业生产中的一种用途是______________。(18苏州)31、(6分)化学是一门以实验为基础的科学,化学实验和科学探究离不开实验装置。

(1)制取气体实验时,首先要对发生的装置进行气密性检查,确保装置不漏气,装置C气密性检查的方法是________________________。

(2)收集某种气体的方法,主要取决于这种气体的性质,装置E所示的收集方法是______________,被收集的气体密度_______空气密度(选填

“>”,“<”,“=”)。

(3)实验室用大理石与稀盐酸制取并收集一瓶干燥的二氧化碳,所选装置正确的连接顺序是______→______→______(填装置编号)。

(4)下图所示一氧化碳与氧化铁的反应装置中,虚线方框内装置的作用有________________。

(18苏州)32、(7分)(1)控制变量,设计对比试验是实验探究的重要方法。

(2)观察是学习化学的重要方法。

研究小组进行如下实验,发现均有红棕色二氧化氮气体产生。

查阅资料:4HNO3O2↑+4NO2↑+2H2O

C+4HNO

3(浓)CO

2

↑+4NO

2

↑+2H

2

O

①【实验1】中所用碎玻璃与浓硝酸不发生化学反应,灼热的碎玻璃在实验中起到的作用是____________________。

②【实验2】中有红棕色气体产生,能否证明【实验2】中木炭与浓硝酸发生了反应请做出判断,并说明理由:

________________________________________。

③【实验3】中发现红热的木炭表面有红棕色气体产生,且生成的气体产

物中检测出二氧化碳(体积分数大于%),能否证明【实验3】中木炭与浓硝酸发生了反应请做出判断,并说明理由:

________________________________________。

(18苏州)33、探究碳酸氢钠、碳酸钠分别与稀盐酸反应,研究小组进行如下两个实验:

(1)【实验1】同时将足量的稀盐酸倒入锥形瓶甲和锥形瓶乙中。

反应至5s生成气体的速率:碳酸氢钠___碳酸钠(选填“>”,“<”,“=”)。

【实验2】分别将足量的稀盐酸逐滴滴入试管甲和试管乙中,边滴边振

荡。

现象为:

①试管甲中的溶液开始时显浅红色,逐滴滴入稀盐酸立即产生大量气泡,

浅红色逐渐消失。

②试管乙中的溶液开始时显红色,滴入稀盐酸没有气泡产生,溶液颜色逐渐变为浅红色后,继续滴加稀盐酸有大量气泡产生,浅红色逐渐消失。(2)【反思1】在【实验2】碳酸钠溶液中逐滴滴入稀盐酸,为何刚开始没有大量气泡产生研究小组查阅资料,绘制出微观示意图。

①碳酸钠溶液中逐滴滴入稀盐酸,依次发生反应的化学方程式为

________________________、___________________________。

②相同浓度的碳酸氢钠溶液和碳酸钠溶液的碱性:碳酸氢钠_______碳酸钠(选填“>”,“<”,“=”)。

(3)【反思2】为何【实验1】中碳酸氢钠最终产生气体的体积较大

请你列式计算:【实验1】中两种固体完全反应后产生气体的质量各是多少(写出计算过程,结果保留到)

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