1.简答题- (共1题)
1.
“过碳酸钠”(化学式可表示为2Na2CO3•3H2O2)俗称固体双氧水,极易分解,它既有碳酸盐的性质,又有双氧水的不稳定性和氧化性,是很好的消毒剂和供氧剂,广泛应用于洗涤、印染和医药等领域.现将一定质量的过碳酸钠粉末溶于m克水中配成稀溶液,再向其中加入适量二氧化锰粉末,充分反应后生成4.8g气体.将反应后的混合物过滤,测得滤液的溶质质量分数为10.6%,求m.(不考虑损耗)
2.单选题- (共15题)
6.
某化学小组的同学利用混有少量CO2的CO气体还原氧化铁,并验证反应后的气体产物。实验室现有下图所示实验装置(可重复使用)。按气体从左到右的方向,装置连接顺序正确的是(提示:NaOH溶液的作用是吸收二氧化碳气体)( )


A.甲→乙→丙→丁 | B.甲→丙→乙→丁 |
C.乙→甲→丙→甲→丁 | D.乙→甲→丙→乙→丁 |
8.
水是一种宝贵的自然资源,下列关于水的说法中,不正确的是()
A.水在自然界中以固态、液态和气态三种形式存在 |
B.自然界中水经过沉淀、过滤、吸附后不能得到纯水 |
C.水蒸发过程和水电解过程的不同在于水分子的种类是否发生了改变 |
D.水中含两个氢原子和一个氧原子 |
12.
向澄清石灰水中通入过量的CO2,发生如下反应:Ca(OH)2+CO2=CaCO3↓+H2O,CO2+CaCO3+H2O=Ca(HCO3)2,Ca(HCO3)2易溶于水.下列图示正确的是()
A.![]() | B.![]() |
C.![]() | D.![]() |
13.
已知硝酸盐易溶于水.对于反应:X+Ca(OH)2=Y+Cu(OH)2↓,下列分析中正确的是()
A. 该反应类型可能是置换反应
B. X和Y的相对分子质量之差为18
C. X 可能是CuCl2或Fe2(SO4)3
D. Y 可能是CaCl2或Ca(NO3)2
A. 该反应类型可能是置换反应
B. X和Y的相对分子质量之差为18
C. X 可能是CuCl2或Fe2(SO4)3
D. Y 可能是CaCl2或Ca(NO3)2
15.
下列各组实验,不能达到实验目的是( )
A. A B. B C. C D. D
![]() | ![]() | ![]() | ![]() |
A.研究温度对化学反应的影响 | B.研究CO2能否使紫色石蕊变红 | C.比较黄铜和铜的硬度 | D.研究燃烧是否需要达到着火点 |
A. A B. B C. C D. D
16.
燃烧是生活中的一种常见现象,下列有关燃烧现象的说法错误的是()
A.硫在氧气和在空气中燃烧现象不一样,这是因为氧气的含量不同 |
B.烧木柴时将木柴架空,则燃烧会更旺,这是因为增大了与氧气的接触面积 |
C.蜡烛火一吹就灭,是因为空气流动而带走热量使温度降至蜡烛的着火点以下 |
D.划火柴时火柴梗向上,则火焰会熄灭,这是因为它接触不到氧气 |
3.选择题- (共14题)
23.— China Dinosaur Park is ______ the north of Wuxi, and Three Kingdoms City(三国城) is _____ the west of Wuxi. Which one should we go during the May Day Holiday?
— Wow, I think China Dinosaur Park is great fun.
24.— China Dinosaur Park is ______ the north of Wuxi, and Three Kingdoms City(三国城) is _____ the west of Wuxi. Which one should we go during the May Day Holiday?
— Wow, I think China Dinosaur Park is great fun.
25._________ the reporters attended(出席) the 2016 Two sessions(两会) and had the chance to meet Premier Li Keqiang.
26._________ the reporters attended(出席) the 2016 Two sessions(两会) and had the chance to meet Premier Li Keqiang.
27._________ the reporters attended(出席) the 2016 Two sessions(两会) and had the chance to meet Premier Li Keqiang.
29.根据对话内容和首字母提示,写出相应的单词。A: Guess What? I'm going to Chiang Mai next week.
B: Wow, sounds l{#blank#}1{#/blank#} fun! But I believe that April is the hottest month of the year there.
A: Yes, that's true. But there's a f{#blank#}2{#/blank#}water festival there from April 13th to 15th.
B: I w{#blank#}3{#/blank#} to know if it's similar to(与...相似) the Water Festival of the Dai People in Yunnan Province.
A: Yes, I think so. This is the time of the Thai New Year. People go on the streets to throw water at each other.
B: Cool! But w{#blank#}4{#/blank#} do they do that?
A: Because the new year is a time for c{#blank#}5{#/blank#} and washing away bad things. Then you'll have good l{#blank#}6{#/blank#} in the new year.
B: Wow, sounds l{#blank#}1{#/blank#} fun! But I believe that April is the hottest month of the year there.
A: Yes, that's true. But there's a f{#blank#}2{#/blank#}water festival there from April 13th to 15th.
B: I w{#blank#}3{#/blank#} to know if it's similar to(与...相似) the Water Festival of the Dai People in Yunnan Province.
A: Yes, I think so. This is the time of the Thai New Year. People go on the streets to throw water at each other.
B: Cool! But w{#blank#}4{#/blank#} do they do that?
A: Because the new year is a time for c{#blank#}5{#/blank#} and washing away bad things. Then you'll have good l{#blank#}6{#/blank#} in the new year.
30.根据对话内容和首字母提示,写出相应的单词。A: Guess What? I'm going to Chiang Mai next week.
B: Wow, sounds l{#blank#}1{#/blank#} fun! But I believe that April is the hottest month of the year there.
A: Yes, that's true. But there's a f{#blank#}2{#/blank#}water festival there from April 13th to 15th.
B: I w{#blank#}3{#/blank#} to know if it's similar to(与...相似) the Water Festival of the Dai People in Yunnan Province.
A: Yes, I think so. This is the time of the Thai New Year. People go on the streets to throw water at each other.
B: Cool! But w{#blank#}4{#/blank#} do they do that?
A: Because the new year is a time for c{#blank#}5{#/blank#} and washing away bad things. Then you'll have good l{#blank#}6{#/blank#} in the new year.
B: Wow, sounds l{#blank#}1{#/blank#} fun! But I believe that April is the hottest month of the year there.
A: Yes, that's true. But there's a f{#blank#}2{#/blank#}water festival there from April 13th to 15th.
B: I w{#blank#}3{#/blank#} to know if it's similar to(与...相似) the Water Festival of the Dai People in Yunnan Province.
A: Yes, I think so. This is the time of the Thai New Year. People go on the streets to throw water at each other.
B: Cool! But w{#blank#}4{#/blank#} do they do that?
A: Because the new year is a time for c{#blank#}5{#/blank#} and washing away bad things. Then you'll have good l{#blank#}6{#/blank#} in the new year.
4.填空题- (共1题)
31.
请观察下列装置并回答相关问题.

(1)其中仪器c 的名称是 .
(2)A 装置中发生反应的化学方程式是 .
(3)若用高锰酸钾制取氧气,应选用的发生装置是 (填对应的编号).其化学方程式为 .若用D装置收集氧气,验满的方法是 .
(4)F 装置从a、b 中某一个接口进气,可以代替D、E 装置收集气体,并且可以减少气体向空气中的逸出.现用B、F装置来制取并收集二氧化碳气体,连接B 装置的应是 口(选填“a”或“b”).

(1)其中仪器c 的名称是 .
(2)A 装置中发生反应的化学方程式是 .
(3)若用高锰酸钾制取氧气,应选用的发生装置是 (填对应的编号).其化学方程式为 .若用D装置收集氧气,验满的方法是 .
(4)F 装置从a、b 中某一个接口进气,可以代替D、E 装置收集气体,并且可以减少气体向空气中的逸出.现用B、F装置来制取并收集二氧化碳气体,连接B 装置的应是 口(选填“a”或“b”).
5.实验题- (共1题)
32.
某班多个化学兴趣小组,在学习碱的化学性质时,进行了如图1所示的实验.

(1)小明组反应后A中溶液呈红色,则反应后溶液中的溶质是(酚酞除外) ;小红组做完A实验后溶液呈无色,用微观理论解释变无色的反应的实质 .
(2)小红组做B实验用于确认二氧化碳与氢氧化钠能发生化学反应(实验前K1、K2均处于关闭状态).B实验全过程的操作及现象 .请写出氢氧化钠与二氧化碳反应的化学方程式 .
(3)实验结束后,小军将以上同学做的A、B两个实验的废液均倒入同一个大烧杯中,观察到混合后的废液呈红色,由此产生疑问.
[提出问题]大烧杯的废液中含有哪些溶质?(酚酞除外)
[查阅资料]氯化钙溶液呈中性,CaCl2+Na2CO3=CaCO3↓+2NaCl
[实验验证]取一定量的废液,逐滴加入氯化钙溶液,如图2为同学们根据部分实验现象绘制的关系曲线.
[实验结论]如果观察到的现象只有沉淀产生,溶液仍然为红色,则废液中的溶质为 ;
如果观察到 ,则废液中的溶质为 .

(1)小明组反应后A中溶液呈红色,则反应后溶液中的溶质是(酚酞除外) ;小红组做完A实验后溶液呈无色,用微观理论解释变无色的反应的实质 .
(2)小红组做B实验用于确认二氧化碳与氢氧化钠能发生化学反应(实验前K1、K2均处于关闭状态).B实验全过程的操作及现象 .请写出氢氧化钠与二氧化碳反应的化学方程式 .
(3)实验结束后,小军将以上同学做的A、B两个实验的废液均倒入同一个大烧杯中,观察到混合后的废液呈红色,由此产生疑问.
[提出问题]大烧杯的废液中含有哪些溶质?(酚酞除外)
[查阅资料]氯化钙溶液呈中性,CaCl2+Na2CO3=CaCO3↓+2NaCl
[实验验证]取一定量的废液,逐滴加入氯化钙溶液,如图2为同学们根据部分实验现象绘制的关系曲线.
[实验结论]如果观察到的现象只有沉淀产生,溶液仍然为红色,则废液中的溶质为 ;
如果观察到 ,则废液中的溶质为 .
试卷分析
-
【1】题量占比
简答题:(1道)
单选题:(15道)
选择题:(14道)
填空题:(1道)
实验题:(1道)
-
【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:3
5星难题:0
6星难题:10
7星难题:0
8星难题:5
9星难题:0