1.简答题- (共1题)

(1)实验中可观察到的现象是① ,② ,烧杯中现象产生的原因是 。
(2)实验中表现出浓硫酸的 性,烧杯中所发生反应的化学方程式为 。
2.计算题- (共1题)
| 第Ⅰ组 | 第Ⅱ组 | 第Ⅲ组 |
稀硫酸的质量/g | 20 | 40 | 60 |
生成气体的质量/s | 2.2 | 4.4 | 5.5 |
根据实验及有关数据进行计算:
(1)100g碱性调味液与稀硫酸完全反应生成气体的质量为 克。
(2)100g碱性调味液与该稀硫酸反应后溶液pH=7时,消耗稀硫酸的质量为 克。
(3)碱性调味液中碳酸钠的质量分数为多少?
3.单选题- (共4题)
①铜、银、硝酸锌溶液;②锌、银、硝酸铜溶液;③锌、铜、稀硫酸、硝酸银溶液;④锌、铜、稀硫酸。
A. ①② B. ②③ C. ③④ D. ②④
4.选择题- (共7题)
根据短文内容选择正确答案。
D
Tu Youyou, an 84-year-old scientist, became the first female (女性) Chinese to win a Nobel Prize in science on Oct,5. She shared the 2015 Nobel Prize for medicine because of the new medicine for malaria(疟疾). Tu started the research in the 1970s that made her find artemisinin(青蒿素), a kind of medicine that has saved many people's lives. It comes from Chinese traditional medicine and now is a good way to treat malaria.
When the news came that Tu was given the prize, there were cheers as well as questions. Some said that her achievement(成就) was the result of lots of Chinese scientists working together. So it is unfair to give the prize only to Tu.
However, Tu was awarded for “three firsts”. She was the first to bring artemisinin to her team, the first to extract(提取) artemisinin that can stop malaria, and the first to finish the experiment.
Giving prizes to scientists with great ideas is the best way to keep national innovation(创新).
根据短文内容选择正确答案。
Never try to work when you are very hungry. If you decided to do your homework right after school, you may get something to eat before getting to work. Always do your homework before you get too tired. Don't wait until very late in everything, or your work will seem much harder than it really is.
If you have more than an hour's work, give yourself a break after an hour. On the other hand, don't break it up so much, or you can't finish anything, you should be able to work at least a half at a time without stopping.
Don't put it off until the last minute. If you put off doing your homework, you will have it on your mind, and you will not enjoy your free time so much. If you put it off until the end of the week or until right before a test, you will have too much work to do. A little bit each night, enough to keep up with what is happening each day in school, will make you not afraid of the test and get good grades.
Do your homework at the same time every evening. This will help you make it a habit. It will make it easier to do, and it will make your free time more enjoyable, as well.
5.填空题- (共7题)

饮用该矿泉水_______后,人体可以补充钙离子_______;偏硅酸中硅元素的化合价显+4价_______;此矿泉水中含有较多可溶性钙、镁化合物,如氯化镁___________;

(1)写出图中标示仪器的名称:① 。
(2)上述装置中的A和D组合后,可以用来制取并收集的气体是 ,写出实验室制取该气体的化学方程式: 。
(3)实验室用高锰酸钾制取氧气时应选用 (填字母标号)做气体发生装置;如果用F装置收集氧气,如何验满
(4)某校化学兴趣小组的同学制备二氧化碳并测定生成二氧化碳的体积,他们设计了如图所示的实验方案:若用右图的收集装置,则所测CO2气体的体积______(填偏大”、“偏小”、“不变”),同学们经讨论分析后,提出的改进措施是 。


(1)某同学对乙醇溶液是否呈现碱性产生了兴趣:
[提出问题]乙醇化学式为C2H5OH,含有“氢氧根”,所以猜测它的水溶液应该显碱性。
[实验设计及操作1]取乙醇溶液少量于试管中,滴加无色酚酞溶液,观察到溶液为 色,则说明乙醇溶液不显碱性。为什么乙醇溶液不呈现碱性呢?
[解释与结论]通过乙醇溶液的导电性实验,可知乙醇溶液几乎不导电。说明乙醇溶液中不含自由移动的离子,即不含 (写出离子符号),所以乙醇溶液不显碱性。
(2)I.乙醇燃烧时如果氧气量不足,可能还有CO生成。用以下装置确证乙醇燃烧产物有CO和CO2,应将乙醇燃烧后的产物依次通过(按气流从左至右顺序填装置编号) 正确连接后的装置仍存在不足,请指出其不足之处

II.装置②中氢氧化钠溶液的作用是 ;写出装置①中所盛溶液名称是 ,写出③中发生反应的化学方程式

(1)在水样中加入明矾的作用是 。
(2)进行过滤操作时,下列做法错误的是 。
A.玻璃棒靠在滤纸任意一方
B.漏斗下端的管口要紧靠烧杯的内壁
C.滤纸的边缘要高于漏斗 D.液面要低于滤纸边缘
(3)认真观察下图A、B两装置,写出B装置中发生反应的化学方程式 ,该反应属于 反应(填写基本反应类型)。

(4)用分子和原子的观点分析比较A装置和B装置在实验过程中水的变化情况 。

(1)已知A含有三种元素,则A的俗名是 ;F的化学式为: 。
(2)上述物质转化过程中:B + X → C属于 反应类型。
(3)指出C的一种用途 ,写出C + Y → D的化学方程式 。
(4)若反应E→F为中和反应,应则E的化学式为 。
(1)火锅常用的燃料有木炭、天然气、酒精等。天然气的主要成分燃烧的化学方程式为_________________________。
(2)他们选的菜有:牛肉片、鱼片、白菜、胡萝卜、豆腐和新鲜的鸭血等。
①菜中提供蛋白质的是________________(填一种即可)。
②新鲜的鸭血中含有多种微量元素,其中铁的含量极为丰富,因此鸭血有预防治疗_________________的功效。

请按下列要求把仪器的名称填在横线上:
(1)少量溶液相互反应时,需要用_____________;
(2)吸取和滴加少量的液体时,需要用_____________;
(3)配制溶液,溶解一定量的溶质时,需要用_____________;
(4)蒸发溶液时,需要用_____________。
6.实验题- (共1题)
-
【1】题量占比
简答题:(1道)
计算题:(1道)
单选题:(4道)
选择题:(7道)
填空题:(7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:8
7星难题:0
8星难题:3
9星难题:0