1.简答题- (共3题)
（1）生活中某些食品包装内放一小包铁粉，作用是什么？______
（2）某同学在探究铝与稀盐酸的反应时，发现打磨过的铝片反应比未打磨过的铝片反应剧烈，请解释原因可能是什么？_____
（3）将一定量的锌粉加入到氯化亚铁和氯化铜的混合溶液中，充分反应后过滤，向滤渣中加入稀盐酸，无气泡产生。请分析滤液中所含溶质情况？____
（1）欲探究分子在不断运动，观察到B烧杯内溶液变成红色，请推测A、B烧杯内盛放的溶液可能是什么？(答出一种组合即可)为使探究更严谨，应如何改进该实验？
（2）若A中盛放硝酸银溶液，B中盛放浓盐酸，该实验现象是什么？
并写出该反应的化学方程式。
2.推断题- (共1题)
（1）A和B反应的化学方程式为 ；
（2）请从微观解释A和C化学性质不同的原因 ；
（3）请设计简单方法区分B和D： 。
3.单选题- (共8题)
| A．氢氧化钠溶液不能敞口放置，因为氢氧化钠溶液会发生变质 |
| B．置换反应会生成单质和化合物，所以生成单质和化合物的反应就是置换反应 |
| C．物质能热胀冷缩，说明分子大小会随温度变化 |
| D．二氧化碳通入石蕊试液中，溶液变红，说明二氧化碳是酸 |
| A．①②③ | B．②③ | C．②③④ | D．①②③④ |
A. 烟碱属于有机物 B. 烟碱中碳、氢元素质量比为12:1
C. 烟碱的相对分子质量为162 D. 烟碱中碳元素的质量分数最高
| A．二氧化碳中的水蒸气(浓硫酸) | B．氮气中的氧气(碳) |
| C．铜粉中的氧化铜(一氧化碳) | D．氯化钠溶液中的硫酸铜(氢氧化钡溶液) |
| A．说明该反应过程中放热 |
| B．图中B点表示稀盐酸与氢氧化钠溶液恰好完全反应 |
| C．图中C处溶液中的溶质为NaCl和HCl |
| D．从A到B过程中，烧杯中溶液的pH逐渐变大 |
| A．建筑工地经常洒水降尘 | B．加强汽车尾气的净化处理 |
| C．减少烟花爆竹的燃放 | D．露天焚烧秸秆 |
4.选择题- (共13题)
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1). 今年春天中国政府下定决心治理污染，使天空变蓝，水变绿；
2). 我觉得最严重的问题是空气污染，空气污染导致了许多健康问题；
3). 我们要少开车，可以骑自行车外出，自行车不产生空气污染；
4). 要多种树，树能够使空气清洁；
5). 我觉得……
Dear editor,
I am looking forward to hearing from you!
Best wishes!
Daniel
1). 今年春天中国政府下定决心治理污染，使天空变蓝，水变绿；
2). 我觉得最严重的问题是空气污染，空气污染导致了许多健康问题；
3). 我们要少开车，可以骑自行车外出，自行车不产生空气污染；
4). 要多种树，树能够使空气清洁；
5). 我觉得……
Dear editor,
I am looking forward to hearing from you!
Best wishes!
Daniel
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Look for Volunteers | |
Toys for Tots | The organization, located in Shanghai, aims to collect old toys, which will be donated to children in need. The work of volunteers is to collect toys, communicate with people who donate toys and give out toys properly. Contact by telephone 025-54568482 or email toys-forkids@126. com. |
Red Cross | The organization, located in Beijing, has a program Red Cross Holiday Mail Heroes. The program is collecting hand written cards to send heroes in the list. Every volunteer needs a pen and a piece of paper. Contact by telephone 010-341568752 or email redcross-beijing@163.com |
Pet Centre | The organization, located in Beijing, is to help people cure their sick pets. Volunteers should be trained before working. Contact by telephone 010-563428791 or email helping-pet@163. com. |
Hope for Blind | The organization, located in Beijing, wants to help people read books. Two kinds of volunteers are needed. One is to read books for the blind, the other who is professional(专业的) will teach the blind Braille. Contact by telephone 010-568794252 or email blindcen-tre@sina.com. |
Look for Volunteers | |
Toys for Tots | The organization, located in Shanghai, aims to collect old toys, which will be donated to children in need. The work of volunteers is to collect toys, communicate with people who donate toys and give out toys properly. Contact by telephone 025-54568482 or email toys-forkids@126. com. |
Red Cross | The organization, located in Beijing, has a program Red Cross Holiday Mail Heroes. The program is collecting hand written cards to send heroes in the list. Every volunteer needs a pen and a piece of paper. Contact by telephone 010-341568752 or email redcross-beijing@163.com |
Pet Centre | The organization, located in Beijing, is to help people cure their sick pets. Volunteers should be trained before working. Contact by telephone 010-563428791 or email helping-pet@163. com. |
Hope for Blind | The organization, located in Beijing, wants to help people read books. Two kinds of volunteers are needed. One is to read books for the blind, the other who is professional(专业的) will teach the blind Braille. Contact by telephone 010-568794252 or email blindcen-tre@sina.com. |
I will go to Guangzhou {#blank#}1{#/blank#} {#blank#}2{#/blank#} and {#blank#}3{#/blank#} {#blank#}4{#/blank#} the plan of a program.
5.填空题- (共5题)
（1）图中阴影部分表示的B溶液为 （填“饱和”或“不饱和”）溶液。
（2）在t2℃时，将等质量的A、B物质配制成饱和溶液，所得溶液
质量较大的是 。
（3）将t2℃时100gA的饱和溶液稀释成10%，需要加水 g。
6.实验题- (共2题)
（1）某同学做该实验时，有失去标签的浓硝酸和浓盐酸，如何区分出浓硝酸？
（2）制取NO2的发生和收集装置应分别选用 和 。请写出利用你选择的发生装置制取另一种气体的反应方程式。
（3）随着反应的进行能产生NO气体，请解释可能的原因？
（4）已知NO密度比空气略大，难溶于水，NO能与氧气反应生成NO2，应选用装置 收集NO，并写出NO和氧气反应的化学方程式。
（5）某同学做完实验后，为回收废液中的金属铜，向废液中加入28g铁屑，恰好完全反应。请计算回收到的铜的质量。
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【1】题量占比
简答题:(3道)
推断题:(1道)
单选题:(8道)
选择题:(13道)
填空题:(5道)
实验题:(2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：7
5星难题：0
6星难题：11
7星难题：0
8星难题：0
9星难题：1