1.计算题- (共1题)
| 反应前 | 反应后 | |
实验 数据 | 生理盐水样品的质量 | 加入硝酸银溶液的质量 | 过滤后剩余溶液的质量 |
130 g | 40 g | 167.13 g |
(1)反应后生成氯化银固体的质量为 g。
(2)请计算该生理盐水中含氯化钠的物质的量(根据化学方程式列式计算) 。
(3)该生理盐水的溶质质量分数 。
2.流程题- (共1题)

根据流程图回答:
(1)沉淀B化学式是 ,试剂甲是 ,滤液C中溶质成分有 。
(2)步骤Ⅱ加入Na2CO3溶液后,分离出沉淀B的实验操作名称是 。
(3)根据以上方案得到NaCl固体测定含有杂质,同学们通过分析后对上述方案作出改进:
在步骤Ⅴ滤液C蒸发结晶之前,先滴加盐酸至不再产生气泡为止,既能除去所含杂质,又能有效防止新杂质的引入,上述反应的化学方程式为 。
(4)为测定原混合物中氯化钠的质量分数,同学们分别提出了如下两个数据测定方案。
方案1:称量混合物A的总质量和干燥的沉淀B或CaCl2固体的质量,并进行计算;
方案2:称量混合物A的总质量和实验改进后所得纯净氯化钠固体的质量,并进行计算。
请你判断:上述所选称量数据不合理的是 (填:“方案1”或“方案2”)。理由是 。
3.单选题- (共15题)

A.反应中CO是还原剂 | B.硅是地壳中含量最高的元素 |
C.该反应属于置换反应 | D.该化学方程式中系数n="1" |
A.反应后的气体中C、O原子的物质的量之比为1:2 |
B.参加反应的CO和O2的物质的量之比为1:1 |
C.反应后气体的物质的量为原混合气体的![]() |
D.反应后所得气体是纯净物 |

A. a是有机物,c、d是无机物
B. 点燃前,要先检验 a的纯度,防止爆炸
C. 化学反应前后,分子、原子的种类保持不变
D. 化学方程式为

A.反应前后固体的质量保持不变 |
B.反应前后固体中铜元素的物质的量保持不变 |
C.反应中消耗的氧化铜与木炭的物质的量一定相等 |
D.反应后固体减轻的质量等于氧化铜中氧元素的质量 |
A. 二溴海因的摩尔质量为286 g
B. 1摩尔二溴海因中含6.02×1023个N2分子
C. 二溴海因中氧元素的质量分数小于氮元素的质量分数
D. 1摩尔二溴海因中C、H、O、N、Br原子个数比为5∶6∶2∶2∶2
选项 | 物质 | 所含杂质 | 除去杂质的办法 |
A | N2 | O2 | 通过足量的灼热铜网 |
B | CO2 | CO | 通过足量的灼热氧化铜 |
C | H2 | 水蒸气 | 通过盛有氧化钙固体的干燥管 |
D | CO2 | HCl | 通过盛有足量氢氧化钠溶液的洗气瓶 |
A.A | B.B | C.C | D.D |
A.用氢氧化钠吸收二氧化硫:2NaOH+SO2=Na2SO3+H2O |
B.洗去试管壁上附着的铜:Cu+H2SO4=CuSO4+H2↑ |
C.熟石灰和盐酸反应:CaO+2HCl=CaCl2+H2O |
D.铁丝在氧气中燃烧:4Fe+3O2![]() |

A.纯净物与混合物属于包含关系 |
B.化合物与氧化物属于包含关系 |
C.单质与化合物属于交叉关系 |
D.中和反应与复分解反应属于并列关系 |
A.通适量CO2气体,观察现象 | B.加入澄清石灰水,观察现象 |
C.加入氯化钡溶液,观察现象 | D.加入足量盐酸,观察现象 |
4.选择题- (共16题)
1)地理位置:中国南部,广东省(province)省会。
2)名胜古迹:白云山、广州博物馆、广州塔等。
3)品尝各种美食。
4)你的补充: ……(1—2 点)
A Travel Guide of Guangzhou
— Why not ______ to the cinema with me this afternoon?
— Why not ______ to the cinema with me this afternoon?
Mr. Green and his family decided to live in Beijing for two weeks.
One morning they left for the Great Wall by bus at 9:00. It took them about one hour and a half to get there. Then they visited the Great Wall and took lots of photos. Four hours later it began to rain. They had to go back to the hotel. After getting to the hotel, they found their camera was lost. Mr Green's kids felt sorry and they didn't want to eat anything for dinner. Mr Green told a joke to make them happy. “An old man lived in a tall building. It had sixty storeys. One day he fell down from it, but he didn't hurt himself,” Mr Green said. “Do you know why?”
The kids were surprised and they didn't know the answer.
“Because he lived on the first floor.”
The kids all laughed after hearing the answer. Just then a policeman came in with a bag. She said a Chinese boy found the bag on the Great Wall and then found them. Mr Green opened the bag and found the camera. They all became very happy.
Mr. Green and his family decided to live in Beijing for two weeks.
One morning they left for the Great Wall by bus at 9:00. It took them about one hour and a half to get there. Then they visited the Great Wall and took lots of photos. Four hours later it began to rain. They had to go back to the hotel. After getting to the hotel, they found their camera was lost. Mr Green's kids felt sorry and they didn't want to eat anything for dinner. Mr Green told a joke to make them happy. “An old man lived in a tall building. It had sixty storeys. One day he fell down from it, but he didn't hurt himself,” Mr Green said. “Do you know why?”
The kids were surprised and they didn't know the answer.
“Because he lived on the first floor.”
The kids all laughed after hearing the answer. Just then a policeman came in with a bag. She said a Chinese boy found the bag on the Great Wall and then found them. Mr Green opened the bag and found the camera. They all became very happy.
In America, the school day usually starts at 9a.m. and 1at about 4 p.m. The school subjects are different from 2. In China, we always have Chinese, maths, English, P.E. and so on. But in America, students have more lessons, such as 3 and driving lessons. Their school life isn't just about study. They have 4things to do than the Chinese students do. There 5 many clubs in American schools, too. If the students are6in sports, they can join different sports clubs. From 2:30 p.m.74 p.m., they do different things in different clubs.
Maybe you think English is very popular in the world,8 American students don't need to learn any 9 language. But that's not true, American children from the age of seven 10 learn a foreign language. For example, they learn French or Chinese.
Tom is four years old now. His father works in a middle school and 1 P.E. there. His mother works in a shop and his grandma looks after him 2. The boy is clever and always 3 that he knows more than his little friends do.
One morning Tom's father 4 earlier. His school was going to hold a sports meeting that day. Of course, he was going to be 5 than the other teachers in his school. About two hours later, Tom's grandma 6 sick. Her head hurt but she couldn't go to see a 7 by herself. She called her son, but 8 answered. So she asked the little boy to go to tell his father about it.
As soon as Tom went out, he 9 his friend Henry. And he asked him to go there with him. The boys wanted to watch the sports meeting, and they 10 went there happily. When they got to school, they stopped to watch the games and didn't remember his grandma.
Tom is four years old now. His father works in a middle school and 1 P.E. there. His mother works in a shop and his grandma looks after him 2. The boy is clever and always 3 that he knows more than his little friends do.
One morning Tom's father 4 earlier. His school was going to hold a sports meeting that day. Of course, he was going to be 5 than the other teachers in his school. About two hours later, Tom's grandma 6 sick. Her head hurt but she couldn't go to see a 7 by herself. She called her son, but 8 answered. So she asked the little boy to go to tell his father about it.
As soon as Tom went out, he 9 his friend Henry. And he asked him to go there with him. The boys wanted to watch the sports meeting, and they 10 went there happily. When they got to school, they stopped to watch the games and didn't remember his grandma.
5.填空题- (共3题)
元素名称 | 碳 | 氧 | 硫 | 氯 | 钠 | 钙 |
元素符号 | C | O | S | Cl | Na | Ca |
(1)请用物质名称或化学式填写:固态时可用于人工降雨的氧化物是 ,会造成酸雨的主要物质是 ,能与血液里的血红蛋白结合,造成人体中毒的气体是 。
(2)光彩夺目的焰火离不开多种元素的焰色反应,表中钠元素的火焰呈 色。
(3)自来水厂应用活性炭、氯气等物质对水进行加工处理,其中活性炭起 作用,氯气的作用是 。
Ⅰ.请根据以下实验回答问题:
(1)从微观角度分析,下图所示实验1和实验2的本质区别是 。
(2)由实验2可以得出水是由 组成的。
![]() | ![]() | ![]() | ![]() |
实验1 水的沸腾 | 实验2 电解水 | 图1 | 图2 |
Ⅱ.水是很好的溶剂。图1所示是a、b两种固体物质在水中溶解度曲线,根据上图回答:
(3)曲线上P点的含义是 。
(4)a物质溶解度小于b物质溶解度的温度范围是 。
(5)上图2所示,试管1、2中分别盛有20℃时等质量的a、b物质饱和溶液,底部有等质量的a、b固体剩余,向烧杯的水中加入冰块,下列判断正确的是 (不考虑溶剂的蒸发,析出的固体不含水)
A.a物质溶液由饱和溶液变成不饱和溶液 |
B.试管2底部的b物质固体减少 |
C.变化后溶液中溶质质量分数:a > b |
D.a、b物质的溶液中溶剂质量相等 |
实验内容 | ![]() | ![]() | ![]() |
实验现象 | A试管内无明显现象,B试管中镁带表面观察到的现象是 。 | C、D两试管中均观察到有气泡产生。 | E试管中观察到的现象是 ; F试管中无明显现象。 |
结论 | 酸的很多反应通常在水溶液中才能完成。 | 不同的酸具有相似的化学性质。 | 不同的酸根会导致酸的“个性”有差异。 |
请分析上述现象并回答:
(1)不同的酸具有相似的化学性质,这是因为酸的组成中都含有 (填元素符号)。
(2)不同的酸根会导致酸的“个性”有差异,因此,可用 鉴别盐酸和硫酸。
(3)清洗试管时,将C、F两试管中的无色液体同时倒入一个洁净的废液缸,废液缸中立刻冒气泡并出现白色沉淀。废液缸里最终产生的白色沉淀中一定含有硫酸钡,该反应的化学方程式为 ,白色沉淀中可能还含有 (填化学式)。
6.实验题- (共1题)






A B C D E F
(1)若实验室用A装置加热氯酸钾和二氧化锰混合物制取氧气,其化学方程式为 。
(2)若B装置X中盛放稀盐酸、Y中盛放石灰石,B与C组成发生、收集CO2气体的系列装置,检验CO2收满的方法是 ,检验制得气体是否为二氧化碳的化学方程式为 。
(3)若实验室用锌粒和稀硫酸制取氢气,可选择的发生装置为 ,反应的化学方程式为 。若用排水法收集并测定氢气的体积,氢气从E装置导管口 (填“g”或“h”)进。选用仪器F测量排出水的体积,仪器F的名称是 。
(4)对锌与稀硫酸反应快慢的影响因素进行探究。反应过程中,利用前10min 内收集的氢气体积比较反应的快慢。控制其他条件相同,进行下表四组实验,获得数据如下:
实验编号 | 试剂 | 前 10 min 内产生的氢气体积(mL) | |
不同纯度的锌 | 不同体积和溶质质量分数的稀硫酸 | ||
a | 纯锌 | 30mL 30% | 564.3 |
b | 含杂质的锌 | 30mL 30% | 634.7 |
c | 纯锌 | 30mL 20% | 449.3 |
d | 纯锌 | 40mL 30% | 602.8 |
Ⅰ. 比较实验a和实验b,可以得到的结论是 。
Ⅱ.要比较不同溶质质量分数的硫酸对反应快慢的影响,应选择的实验编号是 。
Ⅲ. 控制其他条件相同,还需考虑控制的条件是 (例举一种条件即可)。
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【1】题量占比
计算题:(1道)
流程题:(1道)
单选题:(15道)
选择题:(16道)
填空题:(3道)
实验题:(1道)
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【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:13
7星难题:0
8星难题:4
9星难题:1