1.单选题- (共15题)
Cu＋CO2
NaCl＋H2O
Fe3O4
CaO＋CO 2↑A．H2O的摩尔质量是18 g
B．1 mol H2O中含有约1.806×1023个原子
C．H2O的物质的量是指H2O的质量
D．H2O中氢原子与氧原子的物质的量之比为2:1
| | 事 实 | 解 释 |
| A． | 用氦气充霓虹灯 | 氦气化学性质稳定 |
| B． | 打开可乐瓶盖溢出大量气泡 | 压强减小导致CO2溶解度减小 |
| C． | 活性炭用于净水 | 它有吸附性 |
| D． | 自来水生产过程中使用氯气 | 目的是杀菌消毒 |
A. A B. B C. C D. D
①无水硫酸铜 ②澄清石灰水 ③灼热的氧化铜（假设每步均反应完全）
| A．①③② | B．③①② | C．①③①② | D．①③②① |
证明可燃物燃烧需要氧气
比较Fe、Cu 、Ag的金属活动性
常温下配制浓度为2%的石灰水
鉴别稀盐酸与稀硫酸2.选择题- (共19题)
— Mrs. White. She has lived in China for years. _____ Chinese is very good.
— Mrs. White. She has lived in China for years. _____ Chinese is very good.
— Mrs. White. She has lived in China for years. _____ Chinese is very good.
{#blank#}1{#/blank#}I am Linda. I like listening to music on the weekend.
{#blank#}2{#/blank#}I'm Jim. I love watching TV shows about music.
{#blank#}3{#/blank#}I'm Helen. I like doing sports. It is very relaxing for me.
{#blank#}4{#/blank#}I'm Cindy. Pandas are my favorite. Many photos of them are in my room.
{#blank#}5{#/blank#}I am Zhang Ming. I teach math in a middle school.
A. There is a beautiful woman. She is teaching some girls to dance in a dance club. B. A boy is in the living room now! He is watching the TV show I Am A Singer IV. C. A man is having a math class. The students are listening to him carefully. D. Today is Sunday. A girl is listening to Little Apple in her room. The music makes her very happy. E. Look! A girl is running with her friend there. F. It is eight o'clock now. Look! A boy is studying in the classroom. G. Many people are in the zoo now. What is that girl doing? Oh, she is taking photos of the pandas. |
It's a sunny and warm Sunday morning. My parents, my sister and I are all at home. My parents don't have to go to work, and my sister and I don't have to go to school. We are all in the yard (院子). Look! My father is cleaning his bike. He often goes to work by bike. The bike ride takes him about ten minutes. My mother is watering the flowers. The flowers make our yard very beautiful. We all like the flowers. My sister is playing with a dog. It's her pet dog. The dog is very smart. My mother often takes the dog out for a walk after dinner. What am I doing? I'm drawing. I like drawing very much. I want to join the art club at school.
It's a nice day and we're busy in the yard. We are very happy today!
根据材料内容选择最佳答案。
It's a sunny and warm Sunday morning. My parents, my sister and I are all at home. My parents don't have to go to work, and my sister and I don't have to go to school. We are all in the yard (院子). Look! My father is cleaning his bike. He often goes to work by bike. The bike ride takes him about ten minutes. My mother is watering the flowers. The flowers make our yard very beautiful. We all like the flowers. My sister is playing with a dog. It's her pet dog. The dog is very smart. My mother often takes the dog out for a walk after dinner. What am I doing? I'm drawing. I like drawing very much. I want to join the art club at school.
It's a nice day and we're busy in the yard. We are very happy today!
根据材料内容选择最佳答案。
On Thursday evening, Jack goes to bed early. Then he sees a rabbit. Jack doesn't know1it is from. He doesn't have a pet rabbit at home. “Come on,” says the rabbit. “Let's go to town!” “You can2?” Jack asks. “Yes,” the rabbit answers. “Come 3me.” Then the rabbit goes out of the4Jack goes with it.
They get to a zoo. In the zoo, a(n)5 is playing the guitar under a tree. “Let's dance!” says the rabbit. Jack 6with the rabbit. And he sees the moon is dancing, too. Jack wants to tell the rabbit about this,7he can't find it. And he doesn't see the zoo or the lion. He sees his8! “Jack, get up! You have to go to school!” says his mom. Jack smiles and he can't wait to9his mom about the dream. It's so10.
On Thursday evening, Jack goes to bed early. Then he sees a rabbit. Jack doesn't know1it is from. He doesn't have a pet rabbit at home. “Come on,” says the rabbit. “Let's go to town!” “You can2?” Jack asks. “Yes,” the rabbit answers. “Come 3me.” Then the rabbit goes out of the4Jack goes with it.
They get to a zoo. In the zoo, a(n)5 is playing the guitar under a tree. “Let's dance!” says the rabbit. Jack 6with the rabbit. And he sees the moon is dancing, too. Jack wants to tell the rabbit about this,7he can't find it. And he doesn't see the zoo or the lion. He sees his8! “Jack, get up! You have to go to school!” says his mom. Jack smiles and he can't wait to9his mom about the dream. It's so10.
On Thursday evening, Jack goes to bed early. Then he sees a rabbit. Jack doesn't know1it is from. He doesn't have a pet rabbit at home. “Come on,” says the rabbit. “Let's go to town!” “You can2?” Jack asks. “Yes,” the rabbit answers. “Come 3me.” Then the rabbit goes out of the4Jack goes with it.
They get to a zoo. In the zoo, a(n)5 is playing the guitar under a tree. “Let's dance!” says the rabbit. Jack 6with the rabbit. And he sees the moon is dancing, too. Jack wants to tell the rabbit about this,7he can't find it. And he doesn't see the zoo or the lion. He sees his8! “Jack, get up! You have to go to school!” says his mom. Jack smiles and he can't wait to9his mom about the dream. It's so10.
内容包括：
1.目前动物的生存现状与作用；
2.我们应该如何去保护动物；（2条建议）
3.动物是人类的朋友，呼吁更多的人去保护它们。
要求：
1.不能照抄原文，不得在作文中出现学校真实的名称和学生的真实姓名；
2.语句连贯，词数80个左右。
内容包括：
1.目前动物的生存现状与作用；
2.我们应该如何去保护动物；（2条建议）
3.动物是人类的朋友，呼吁更多的人去保护它们。
要求：
1.不能照抄原文，不得在作文中出现学校真实的名称和学生的真实姓名；
2.语句连贯，词数80个左右。
内容包括：
1.目前动物的生存现状与作用；
2.我们应该如何去保护动物；（2条建议）
3.动物是人类的朋友，呼吁更多的人去保护它们。
要求：
1.不能照抄原文，不得在作文中出现学校真实的名称和学生的真实姓名；
2.语句连贯，词数80个左右。
内容包括：
1.目前动物的生存现状与作用；
2.我们应该如何去保护动物；（2条建议）
3.动物是人类的朋友，呼吁更多的人去保护它们。
要求：
1.不能照抄原文，不得在作文中出现学校真实的名称和学生的真实姓名；
2.语句连贯，词数80个左右。
3.填空题- (共2题)
（1）焦炭用于冶炼金属是利用了其_________（填“氧化”或“还原”）性；焦炉煤气中，引起温室效应的氧化物是___________,属于有机物的是________，有毒的是_________；阿司匹林中碳、氢元素的原子个数比为____________；
（2）下图是煤燃烧过程中某些反应的微观示意图。
Ⅰ．该反应中生成物的化学式为_____________。
Ⅱ．为了使煤充分燃烧达到节能减排之目的，在反应物中应增加的微粒是______________。（填序号）
（1）“海水晒盐”所采用的方法是____________（填写编号）。
I．冷却结晶 II．蒸发结晶 III．过滤
（2）海上航行缺乏饮用水时可采用下图装置获得淡水。用该装置将2000g含氯化钠3%的海水暴晒4小时后， 剩余海水中氯化钠的质量分数为4%，则收集到的可饮用水为___________g。
（3）海水中的硼酸（化学式为H3BO3）可用于玻璃工业，下表为硼酸的部分溶解度数据。
| 温度(℃) | 0 | 20 | 40 | 60 | 80 |
| 溶解度(g/100g水) | 3 | 5 | 9 | 15 | 23 |
I．由表可知，硼酸的溶解度随着温度的升高而__________（填“增大”或“减小”或“不变”）。
II．60℃时，100g硼酸饱和溶液中含有硼酸_____________g（保留整数）。
III．某同学设计如下实验探究“温度”及“固体溶质的形态”对溶解速率的影响。
a．上述三个烧杯中，所得溶液浓度的大小关系是_________（用“①”、“②”、“③”表示）；。b．若要达到实验目的，需改变实验①中的一个条件是_______________（从以下选项中选择）
| A．将20℃的水改为80℃ | B．将水的体积改为50mL | C．将粉末状固体改为块状 |
4.实验题- (共3题)
（1）甲方案中发生反应的化学方程式为 ，b端的气体是 。由产生气体的体积可推算出氢气与氧气的质量比为1：8，若氢、氧元素的相对原子质量分别为m和n，则水中氢、氧元素的原子个数比为 （用“m”或“n”表示）。
（2）乙方案的实验过程中，B装置中可观察到 。若反应结束测得B装置减轻1.6g，则C装置增重的质量会 (填“大于”、“等于”或“小于”)1.8g。甲、乙方案的反应原理虽不同，但实验的设计依据都是 。
（1）仪器名称：a ；b 。
（2）实验室用双氧水制取一瓶干燥的氧气，从图一中选择装置，正确的连接顺序为 （用字母表示）。写出该反应的化学方程式 。
（3）某同学用A装置制取氧气时发现试管固定得太高，该同学应调节图二中的旋钮 （填“①”或“②”或“③”）。
（4）用图一中的C装置收集CO2，验满的方法是 。
（5）实验室用大理石和稀盐酸反应制取0.05mol CO2，同时生成氯化钙多少克？ （根据化学方程式列式计算）
（1）由上图实验一、二可知，氢氧化钠会吸收空气的 ，因此要密封保存。
（2）实验三中可观察到三个软塑料瓶变瘪的程度大小为A＞B＞C， A瓶内发生反应的化学方程式为 ，对比A瓶与 （选填“B”或“C”)瓶的实验现象可证明CO2能与NaOH发生反应。
（3）同学们设计如下两种方案鉴别氢氧化钠溶液与氢氧化钙溶液（分别编号为A、B）。
| 方案一 | 方案二 | 分析 |
| | 微热（不考虑水分蒸发） | 两种方案中均观察到A试管内出现白色浑浊，A中试剂为 ； 方案二的设计原理是利用了 。 |
（4）同学们看到盛有NaOH的试剂瓶上标注着“NaOH含量不少于96.0%”，开始如下探究：
（提出问题）氢氧化钠中含有什么杂质？
（查阅资料）工业制取NaOH的反应原理是：2NaCl + 2H2O
2NaOH + H2↑ + Cl2↑，然后蒸发溶剂获得NaOH固体（在化工生产中，原料往往不能完全转化为产品）。
（提出猜想）杂质为碳酸钠和氯化钠。
（实验探究）取样溶于水，并分成两份。
步骤①：向一份溶液中滴加酚酞试剂；
步骤②：向另一份溶液中滴加过量稀硝酸；
步骤③：向②所得溶液中继续滴加硝酸银溶液。
（实验结论）猜想正确。
请分析：
Ⅰ．步骤①中可观察到液体变 色；
Ⅱ．步骤②所得溶液中的溶质除NaCl外，还有 ；
Ⅲ．写出步骤③中发生反应的化学方程式 ；
Ⅳ．上述实验中步骤 （填写序号）是没有必要进行的。
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【1】题量占比
单选题:(15道)
选择题:(19道)
填空题:(2道)
实验题:(3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：2
5星难题：0
6星难题：6
7星难题：0
8星难题：7
9星难题：5