1.单选题- (共9题)
洗涤后往滤渣中加入稀盐酸，没有气体放出，则滤液中一定不存在的物质是
| A．Fe(NO3)3 | B．Cu(NO3)2 | C．AgNO3 | D．Fe(NO3)2 |
| A．“探究碳酸钠的性质”实验中，测定溶液pH时应先将试纸湿润 |
| B．“粗盐的提纯”实验中，过滤时将悬浊液直接倒入漏斗里 |
| C．“配制一定溶质质量分数的溶液”实验中，多余的药品应放回原瓶 |
| D．“高锰酸钾制取氧气”实验中，收集好气体后应先将导管移出水槽再停止加热 |
| 序号 | 物 质 | 杂 质 | 所 用试剂 |
| A | N2 | O2 | 灼热的铜网 |
| B | 二氧化锰 | 氯化钾 | 溶解、过滤、洗涤、干燥 |
| C | CaO | CaCO3 | 适量的稀盐酸 |
| D | CuSO4溶液 | 硫酸 | 氧化铜 |
| A．A | B．B | C．C | D．D |
2.选择题- (共13题)
If you go into the forest with friends, stay with them.{#blank#}1{#/blank#}If you do get lost, this is what you should do.
Sit down and stay where you are. Don't try to find your friends. Let them find you. You can help them to find you by staying in one place.
{#blank#}2{#/blank#}Give them a signal(信号)outing or whistling (吹口哨) three times. Stop. Then shout or whistle three times again. Any signal given three times is a call for help.
Keep on shouting or whistling, always three times together. When people hear you, they will give two shouts or two whistles.{#blank#}3{#/blank#}
If you don't think that you will get help before night comes, try to make a small room with branches(树枝).
{#blank#}4{#/blank#} ? You would have to leave your little branch room to look for something to eat and drink. Don't just walk away. Pick up small branches and drop them as you walk so that you can find your way back.
That is all to say.{#blank#}5{#/blank#}
A. What should you do if you get hungry or need drinking water? B. If you don't, you may get lost. C. What are you going to do when you get lost? D. There is anther way to help your friends or other people to find you. E. When a signal is given twice, it is an answer to a call for help. F. The most important thing to do when you are lost ---stay in one place. |
If you go into the forest with friends, stay with them.{#blank#}1{#/blank#}If you do get lost, this is what you should do.
Sit down and stay where you are. Don't try to find your friends. Let them find you. You can help them to find you by staying in one place.
{#blank#}2{#/blank#}Give them a signal(信号)outing or whistling (吹口哨) three times. Stop. Then shout or whistle three times again. Any signal given three times is a call for help.
Keep on shouting or whistling, always three times together. When people hear you, they will give two shouts or two whistles.{#blank#}3{#/blank#}
If you don't think that you will get help before night comes, try to make a small room with branches(树枝).
{#blank#}4{#/blank#} ? You would have to leave your little branch room to look for something to eat and drink. Don't just walk away. Pick up small branches and drop them as you walk so that you can find your way back.
That is all to say.{#blank#}5{#/blank#}
A. What should you do if you get hungry or need drinking water? B. If you don't, you may get lost. C. What are you going to do when you get lost? D. There is anther way to help your friends or other people to find you. E. When a signal is given twice, it is an answer to a call for help. F. The most important thing to do when you are lost ---stay in one place. |
①{#blank#}1{#/blank#} What's your friend's name? A．Yes, she is.
②{#blank#}2{#/blank#} Does she have long hair? B．Yes, they are.
③{#blank#}3{#/blank#} Are they good friends? C．He's short.
④{#blank#}4{#/blank#} Is your brother tall or short? D．Yes, she does.
⑤{#blank#}5{#/blank#} Is she thin? E．Liu Tong.
①{#blank#}1{#/blank#} What's your friend's name? A．Yes, she is.
②{#blank#}2{#/blank#} Does she have long hair? B．Yes, they are.
③{#blank#}3{#/blank#} Are they good friends? C．He's short.
④{#blank#}4{#/blank#} Is your brother tall or short? D．Yes, she does.
⑤{#blank#}5{#/blank#} Is she thin? E．Liu Tong.
3.多选题- (共2题)
A. 乳酸由碳、氢、氧三种元素组成 B. 完全燃烧可生成CO2和H2O
C. 碳元素与氧元素的质量比为1:1 D. 每个分子中含有3个碳原子和3个水分子
4.填空题- (共3题)
①2个氢原子 ，②硝酸铵中的阳离子 ，③空气中含量最多的气体 ，
④地壳里含量最多的金属元素是 ，⑤最简单的有机物 ．
（2）生活中处处有化学。铁锅是厨房中常用的炊具，请用所学的化学知识填空：
①铁锅作炊具主要是利用铁的 性；②使用铁锅有利于人体健康，主要是因为 ；
③请你说出一个厨房中防止铁锅生锈的方法 ．
厨房中常见的调味品，D、H是黑色固体单质，F是红棕色固体氧化物，乙、丙是组成元素相同的气态氧化物。试推断：
（1）写出A的俗名 ，C的化学式 ，F的化学式 ；
（2）反应③的基本反应类型为 ；
（3）写出②、⑤、⑥的化学方程式
② ，
⑤ ， ⑥ 。
（资料卡片）：
①柠檬酸水溶液显酸性，柠檬酸钙不溶于水；
②工业生产柠檬酸，原料预处理后，得到的发酵液中
含有柠檬酸及其他可溶性杂质；
③一水柠檬酸在不同温度下的溶解度如下表：
| 温度/℃ | 0 | 10 | 20 | 30 | 40 | … |
| 溶解度/g | 96 | 118 | 146 | 183 | 216 | … |
④某种专用树脂对柠檬酸的吸附率和水温的关系如右图：
（钙盐法制备）
（1）气体X是 (填化学式)，实验室检验该气体的化学方程式为 ；
（2）操作1、2的名称是 ；
（3）操作3的目的是得到一水柠檬酸晶体，操作顺序是b → → a；(填序号)
a．过滤 b．加热浓缩 c．冷却结晶 d．蒸发结晶
（4）工业生产中，可加入 (填序号)进行脱色处理；
| A．活性炭 | B．明矾 | C．肥皂水 |
（6）母液可以循环，其中一定含有的溶质是 ；
（变温色谱分离法制备）
（7）对比“变温色谱分离法”，请你说出“钙盐法”的劣势 。
5.实验题- (共1题)
（1）以石灰石为原料，可以生产生石灰，生石灰可做干燥剂，某化学兴趣小组的同学对食品厂某批次包装完整、粉状的生石灰成分进行质量检测。
（提出问题）该批次的生石灰成分及含量是否与标签相符？
(标签如图所示)
（猜想与假设）固体成分为：
A：全部是碳酸钙和杂质 B：既有碳酸钙，也有氧化钙和杂质
C：全部是 和杂质。
（设计并完成实验）
| 实验操作 | 实验现象 | 实验结论 |
| 第一步操作：取少量固体于试管中，加适量水振荡后静置，再滴几滴无色酚酞试液 | 溶液变红 | 说明固体成分中一定含有 |
| 第二步操作：再取少量固体于另一试管中滴加过量稀盐酸 | 有气泡生成 | 说明固体成分中一定含有 |
（实验结论）该兴趣小组同学得出的结论：剩余固体成分与（猜想与
假设）中的 (填A、B或C)相同。
（定量测定）称取10克该批次的生石灰样品，置于锥形瓶中，向其中缓慢加稀盐酸，直至无气泡产生，电子天平读数变小0.88克，将锥形瓶中残留物进行过滤、洗涤、干燥，得到固体质量为0.2克。
（问题讨论）由于生石灰与酸反应放出热量，导致水蒸气随CO2一起从导管口逸出，这一因素使测得的生石灰的最终含量将 (选填“偏小”“偏大”或“无影响”)。反应生成的CO2也会代替原有的空气残留在锥形瓶中，这一因素对测定结果也有影响。
（2）实验小组的同学对实验室制取二氧化碳反应后的溶液进行了如下探究：
取大理石和盐酸反应且过滤后所得废液20克于烧杯中，逐滴滴入碳酸钠溶液至过量，滴入碳酸钠溶液的质量与生成沉淀的质量的变化关系如图所示。请根据图中信息计算废液中氯化钙的质量分数是多少？(写出计算过程)
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【1】题量占比
单选题:(9道)
选择题:(13道)
多选题:(2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：4
5星难题：0
6星难题：8
7星难题：0
8星难题：1
9星难题：0