第一篇:九U7--9單元的復習題
九年級英語期末Unit7---9復習題
1、places where….(…的地方)
譯:我喜歡去一些人們待人確實有好的地方。I love places _______ the people are really friendly.2、It’s best for sb to do…(某人最好做某事)
It’s best to travel with someone who can translate things for you.(同義句)You ______ ______ ______ with someone who can translate things.3、would like to do….(想做某事);be willing to do…(愿意做某事)()He’d like_____ good grades, but he’s never willing _____ hard.A.getting;workingB.get;to workC.to get;to workingD.to get;to working
4.make… + adj.for sb.to do sth.譯:你已經(jīng)提供幫助使我擁有“幸運”一事成為可能。You have helped make ______ ______ ______ me ______ ______ ― Lucky‖.5、(動名詞作主語)譯:當一名志愿者真棒。______ a ______ ______ ______.6、hope to do(希望做)
7、…be done(……被做)
People played that kind of football in the old days.(變成被動語態(tài))______________________________________________.8、be made +(不同介詞)
This kind of paper is made_____ bamboo_____ writing with_____ ancient China.(填入適當介詞)友情提醒
同學們在復習過程中,須注意:
1、注重Unit8“提供幫助”句型的表達。
2、重視幾組同義詞(組)的替換。
3、加強對兩單元中5篇文章的熟讀。
4、不規(guī)則動詞表的識記。
5、重視主動語態(tài)和被動語態(tài)在幾種常見時態(tài)中的轉(zhuǎn)換。
6、變被動語態(tài)的幾種特殊情況。分層達標、當堂訓練題
A級過關題
一、單項選擇
(A.help outB.give awayC.hand inD.hand out
(A.builtB.setC.startD.come up with
(A.coachedB.guidedC.showedD.helped
(A.supported the whole cityB.cheered up the whole cityC.let the whole city downD.gave the whole city some hope
(A.EspeciallyB.For instanceC.In a wordD.generally speaking()6._____ is an expensive place but the wine is not expensive.A.New YorkB.HKC.Mexico CityD.Paris
()7.Confucius was born in Qufu.He was _____.A.a writerB.a thinkerC.an educatorD.B and C()8.Which of the followings belongs to France?
A.Florida beachB.Niagara FallsC.Amazon jungleD.Notre Dame Cathedral()9.At first Kate considered_____ to her, but later decided to see her.A.writeB.writingC.talkingD.talk
()10.What _____ did he say?A.otherB.elseC.anotherD.the other()11.--Hong Kong is a very_____ city, and I want to visit it this fall.–Have a good trip.A.boringB.outgoingC.fascinatingD.tiring
()12.– How are you getting an with your study?--______, thank you.A.Pretty goodB.Not at allC.Quite wellD.Never mind
()13.--May I stop here?--Of course you can.You can stop your car on_____ side of the street.A.anotherB.neitherC.bothD.either
()14.--Does Xiao Ming always work hard?--Yes.So it is_____ for him to pass all his exams.A.toughB.unusualC.naturalD.difficult
()15.—Would you like me to call a taxi for you?--____.But my drive is coming to meet me here.Thank you all the same.A.Yes, pleaseB.No, I needn’tC.I think soD.It’s very kind of you
()16.Not only_____ she_____ Yang Ming, but also she likes Liu Xiang.A.does;likeB.I;likeC.did;like D.do;like
()17.--Dad, my CD player_____.–Don’t worry.Let’s go and have it repaired.A.is missingB.is brokenC.was stolenD.was lost
()18.–It’s impolite to_____ those people who are in trouble.– I agree with you.A.take inB.help outC.look afterD.laugh at
()19.If you don’t know how to spell a new word, you’d better_____.A.look up a dictionaryB.look at a dictionaryC.look it up in a dictionaryD.look for it in a dictionary()20.–What a heavy rain!--So it is.I prefer_____ at home_____ on such a rainy day.A.watch TV;to go outB.watch TV;go outC.watching TV;to going outD.to watch TV;going out()2 1.Which of the followings was invented earliest?
A.A calculatorB.A computerC.A telephoneD.A car()2 2.Potato chips were invented by mistake by a chef called_____.A.George CrumB.Jayce CoziarC.Chelsea LanmonD.a group of college students from the USA()23.Basketball was invented by_____ called James Naismith.A.an AmericanB.a CanadianC.an ancient ChineseD.a German
()24.The Berlin Olympics of the year1936 were remembered by people all over the world because_____.A.a basketball team from China first took part in the Berlin Olympic Games B.American NBA players won that game for the first time.C.the first basketball game in history was played in the Berlin Olympics
D.basketball became an Olympic event in history for the first time in Berlin()25—I hope _____play basketball tomorrow.----Yes, I __________.A.him not to;hope not, tooB.he won’t;hope it ,tooC.he won’t;hope so,tooD.him to not ;hope that,too()26_________would you like to live in?
Which cityB.WhichC.WhenD.Where
()27.Could you please______the window? It’s too cold outside.A.openB.openingC.not openD.not to open()28.I dreamt_______the house that I used to live in.A.forB.withC.ofD.To
().29---Jill,we’ll have_______training with the dog.---Great.That’s what I’m expecting.A.six monthsB.a six-monthsC.six months’D.six month’s 30.---Did you go to Jack’s birthday party?-----No.I______.A.am not invitedB.wasn’t invited C.haven’t invitedD.didn’t invite 31.The boy was often heard ______happily in her room.A.singB.to singC.singingD.sings 32.Ball playing___________.A.could be more interesting.B.would teach the young men how to play games.C.Would make the young men how to play games
33.I’ll go to see my grandpa in Harbin ____next week.A.somesimeB.some time C.sometimes D.some times
34.Sorry,we don’t have the coat________you need.A,what B.who C.whom D.which
35.---Who’s the little baby in the photo,Jim?
----It’s me.This photo_________ten years ago.A.takesB.is takenC.took D.was taken
二、單詞拼寫
1、I hope you can_________(提供)us with some information about the seven-day-trip to Beijing.2、My father knows the man who was__________(邀請)to the party yesterday.3、We should try our best to make as few mistakes as possible when we speak English, or we won’t make ourselves___________(明白)
4、She imagined______(走進)into her husband’s office and wanted to tell him she considered_______(支持)him completely.5、It is one of the most famous__________(教堂)in Europe.6、Did you know one of the most popular drinks—tea was_________(發(fā)明)by accident?
7、The emperor noticed that the leaves in the water _________(發(fā)出;產(chǎn)生)a pleasant smell.8.With the___________(發(fā)展)of computer science, more and more work will be done by computer.9.Mary,could you__________(拿來)me my glasses?
10,The football match was so__________(令人激動的)that we all enjoyed it.三,句型轉(zhuǎn)換
1.What would you like to do ?(同義句)What___you________to do ?
2.The weather is not too hot and it is not too cold,either.(同上)
3.It took Davie two hours to work out the difficult proble(同義句)
4.The boy is training the dog to jump over the wall.(改被動語態(tài))
5.劃線提問)
四.翻譯
1.明年夏天我考慮去北京(consider)
2.我希望學校給我提供一套住房。(provide)
3我們是心甘情愿的努力學習(be willing to do sth)
5.放假的消息使每個同學都振奮(cheer…up)
6.領導必須想出辦法出解決水的問題(come up with…)
7.她不僅是我們的老師也是我們最好的朋友(not only…but also)
8.電腦被用來學習的。(be used for….)
9.我們學校圖書室的書的數(shù)量是一萬冊(the numer of….)
10.他長得像他爸爸(take after)
B級過關題
(A)
A: Good morning.___________________________________ B: Good morning.I’d like to buy an MP5 for my English study.A: We have many types here.Some are made in China and some are made in other countries.B: This one looks nice.________________________________
A: It’s made in Japan.B: ________________________________A: 2,000 yuan, it’s a new type.B: Wow.That’s too expensive.I can’t afford it.Do you have an ordinary one? A: Sure._____________________________It costs only 300 yuan.B: Well.That one looks very good and the price is OK.Is it made in China?A: Yes.It’s made in Shanghai.B: OK.____________________________(B)
A:What do youusually do in your spare time?
B:87 __________________________.A:Well,watching movies is really a relaxing thing.88______________________? B:I like action movies and thrillers.The other day I watched a movie called 2012.A:What’s it about ?
B:It’s about a terrible disaster(災難)happening on our earth.Our world is almost ruined(毀滅)in that movie.A:89 __________________________.Do you believe this? B:Not really.But it sure reminds(提醒)us to care about our earth.A:90 ___.Only then can we get through any difficulty together.B:That’s quite important.91 __________________________?A:Yes.I’d love to.What will you show me this time ? B:How about Transformers Ⅲ ? A:Great,let’s go.任務型閱讀
(A)
An eight-year-old child heard her parents talking about her little brother.All she knew was that he was very sick and they had no money.heard her daddy say to her tearful mother,“ Only a miracle can save him now,” the little girl went to her bedroom and pulled her money from its hiding place and counted it carefully.―He’s really , really sick and I want to buy a miracle.‖ ―Pardon?‖ said the salesman.― My brother Andrew has something bad growing inside his head and my daddy says only a miracle can save him.So how much does a miracle cost? ‖ ― We don’t sell a miracle here, child.I’m sorry, ‖ the salesman said with a smile.(2)A well-dressed man heard it and asked, ―What kind of a miracle does your brother need?‖ ―I don’t know.‖ she answered with her eyes full of tears.― He’s really sick and mum says he needs an operation.But my daddy cannot pay for it, so I have brought all my money.‖ ― How much do you have? ‖ asked the man.― $ 1.11, the price of a miracle for your little brother? ‖ He took up the girl’s hand and said, ― Take me to where you live.I want to see your brother and meet your parents.Let me see if I have the kind of miracle you need.‖ That well-dressed man was Dr Carlton Armstrong, a famous doctor.The operation was successful and it wasn’t long before Andrew was home again.How much did the miracle cost?
1、(1)句中operation的漢語意思可能是__________
2、將(2)處譯成中文。__________________________________________________
3、In the eyes of the little girl , a miracle might be some_________ _________.(每空一詞)
4、From the text , we know the poor boy_________ _________ at last.(每空一詞)
(B)
The car was invented just a century age.You may know the names of all kinds of cars, but manypeople don’t know who was the inventor of the first car.The first car was invented not by a German, but by an American.His name is Henry Ford.Henry Ford was born in a poor family.He was the eldest of the six children.When he was a child, he became in a machine shop for two dollars and fifty cents a week.In the evenings he mended watches for another dollar a week.At that time there was another interest in the life of the young Ford.He dreamed to make a machine.It could run without a horse, and so it was named ―horseless carriage(無需馬拉車)‖Later Henry Ford founded the Ford Motor Company(福特汽車公司).He was really the inventor of the first car in the world.1、根據(jù)(1)句,完成下面句子。(每空一詞)His mother died_______ the _______ of twelve.2、根據(jù)(2)句,完成下面句子。(每空一詞)He_______ _______ strong and able by the hard life.3、將(3)處譯成中文。__________________________________________________
4、根據(jù)短文內(nèi)容,完成下面句子。(每空一詞)
Henry Ford was interested in_______ _______ mending machines_______ _______ making machines.
第二篇:九上U 6全單元教案
英語(九年級上冊)Unit 6 TV programmes
Task
I.Teaching aims and learning objectives By the end of the lesson, students should be able to: 1.learn to make an outline before writing;2.learn to create a simple TV drama script.II.Teaching contents 1.New words and phrases: gun, twin, burglar, receive a message, ask for help, call the police,three men in police uniforms, with guns in their hands, be pushed into a minibus, open the back door of …
2.New structures: The twins saw three men in police uniforms coming out of the building with guns in their hands.III.Focus of the lesson and predicted area of difficulty Teach the students how to create a TV drama script.IV.Teaching procedures Step 1 Lead-in T: Do you like watching drama series? Now let’s watch a short video first.(Show drama series to the students)
What do you think of the drama series? S: They are exciting/interesting/humorous …
T: Do you know this man? He is good at writing stories.He wrote the TV drama script for the Modern Family.Because of his good writing, we can enjoy such exciting drama series.【設計意圖:通過電視劇引出編劇,讓學生對于本課的寫作任務有初步的認識。】
Step 2 Learn about the outline 1.Learn about the background.T: Look, Millie is writing a TV drama script for a competition.To write a good TV drama script, she made an outline before writing.Now let’s take a look at the first half of her outline.How many parts are there in the outline? What are they? S: There are two.They are the background and the story.T: Read the background first.What information can be introduced in this part? S: We can introduce characters, time, place, events and so on.T: Read the background carefully and answer these questions.(1)who: the twins Justin and Luke;their friend Sarah(2)when: one day(3)where: The twins were at home.Sarah lived in Hill building.(4)what: The twins received a message from Sarah, who was asking for help.There were some burglars in Hill Building.【設計意圖:通過分析outline,幫助學生逐步形成認識,為下面的寫作做好鋪墊。】 2.Learn about the story.T: What happened then? Read the outline carefully and answer these questions.(1)What did the twins do after they received the message? They called the police at once and then ran there quickly.(2)What did they see when they got there? They saw three men in police uniforms coming out of the building with guns in their hands.(3)What happened to the twins then? They were pushed into a minibus.(4)What did they do on the bus? They tried to use a knife to open the back door of the minibus.【設計意圖:讓學生閱讀story,回答問題,為下一步的閱讀任務打好基礎。】 3.Help Millie finish her writing.T: Can you help Millie finish the first half of the story? 4.Learn about ways to write a good beginning.T: After reading the first paragraph of the story, do you want to know what happened next? S: Yes.T: So remember that a good writer should catch readers’ attention in the first paragraph.【設計意圖:關于電視劇本開頭部分的寫作給學生提出一點建議,為接下去的寫作做鋪墊。】 5.Learn about ways to write a good story.T: What did the twins do in the story? S: a.called the police b.ran to Hill Building at once c.saw three men in police uniforms coming out of the building with guns when they arrived there d.thought...e.ran towards the three men f.tried to stop them from leaving g.were pushed into a minibus T: After reading these sentences, what do you think of the twins? What kind of people are they? S: They are helpful and brave.T: So remember that a good writer can make readers know what the characters are like by their actions, thoughts, appearance and speeches.【設計意圖:羅列故事主體部分,幫助學生更清楚地了解電視劇劇本的寫作特點和方法。】 T: The twins were pushed into a minibus.It seemed that they were trapped and in danger.However, it was clever of them to take a knife with them.Isn’t it surprising? Can they open the back door with the knife and get away from the minibus? S: …
T: Remember that a good writer often describes what happens, what the characters do and where the turning points are to attract readers’ attention.What’s more, he or she often chooses two or more scenes for the story.【設計意圖:通過創(chuàng)設開放性問題引發(fā)學生的思考和討論,為接下去續(xù)寫故事做準備。】
Step 3 Writing 1.Help Millie finish the rest of her story.T: Can the twins get away from the minibus? If they opened the back door, what would happen next? If the burglars found them opening the back door and stopped them, what would happen next? Let’s have a discussion and continue Millie’s story.T: Let’s share our stories together.【設計意圖:寫作任務分兩步開展,其一是續(xù)寫故事。經(jīng)過之前的諸多鋪墊,此時的續(xù)寫已經(jīng)水到渠成。教師在學生中抽取故事在全班分享,使學生能夠互相取長補短。】 2.Tips for creating an interesting story.T: Here are some tips for creating an interesting story.If you are interested in creating your own TV drama script, you can follow these tips.3.Show some pictures to the students and ask them to write a story about them.T: Look, here are some pictures.Can you create a TV drama script according to these pictures? As a good writer, you’d better make an outline before writing.Today we learn to create a TV drama script and continue Millie’s story.After class, can you finish your TV drama script? If you are interested in it, you can also create your own TV drama script.By writing you learn to write.【設計意圖:寫作任務二是看圖編寫故事。受課堂時間的限制,教師可安排學生在課堂上列出寫作提綱,在課后完成寫作任務。】
V.Homework 1.Review the different ways to create a TV drama script;2.Finish the TV drama script according to your outline.
第三篇:五年級上冊數(shù)學復習題九
復習題九
1、解方程
X÷11.6=540.5x+6.8x=91.2
58x+4.6×2=18.84(x-2.1)=75.22、解決問題
1、牡丹江森林資源豐富,威虎山國家森林公園總面積是34.5萬公頃,比三道關國家森林公園面積的8倍還多2.5萬公頃,三道關國家森林公園面積是多少萬公頃?
2、響水大米是享譽國內(nèi)外的綠色保健大米,因其生長在火山玄武巖石板地上而得名。有一塊近似平行四邊形的稻田,底156米,高270米。如果每公頃產(chǎn)大米7500千克,那么這塊稻田可產(chǎn)響水大米多少千克?
3、王老師買了《哈利波特》和《作文起步》各4本,共花了341.6元,《作文起步》單價71.9元,問《哈利波特》每本多少元?
4、一間教室寬6.5米,長是寬的1.8倍,如果這間教室有48名學生,那么平均每名學生占地多少平方米?(結(jié)果保留兩位小數(shù))
第四篇:第二單元復習題
第二單元復習題
爬山虎小隊制
一.看拼音,寫詞語
Shūsànsǎngzhiliǔtiáodǒngdezǐyuē
()()()()()
Fǎnchúfanghuánglìzhīchāzidìji
()()()()()
Chāngkuàihuàn rán yì xīnjīn jīn yoǔ weìshū sànyuadúā
yí
()()()()()()
tùziàozhōuchāng jǐng lùlánzìmùjiānxīmianǎlǐ
()()()()()()()
二,課文內(nèi)容填空。
1、《背課文》講述“我”小時候背課文();();
()的三段經(jīng)歷和感受,表達了對童年學生生活的()之情。
2、《鐘樓讀書》以()為線索,通過介紹在()的經(jīng)歷,與
讀者分享(),表達()的感情。
3、《意外》是篇()的散文。文章記敘了“我”()并在第二年的生日(),這兩件表達了“我”對
(),贊揚了高爾基()的品質(zhì)。
三,用下面面的關聯(lián)詞填空,然后再造句。
因為···所以···、···所以···、··· 因為 ···
1,()國寶熊貓很稀有,()我們要保護它。
2,知識的海洋是遼闊無邊的,()學習是無止境的。
3,北極的冰川正在慢慢融化,()全球的氣溫升高了。
①。
②。
③。
四,語言實踐。
1、按要求填寫詞語。
手不()()博()群()專心()()
字斟()()互相()()各抒()()
囫()吞()望文()()()()取義
我發(fā)現(xiàn):。
我還知道好的讀書習慣的詞有:()
我還知道不好的讀書習慣的詞有:()
用帶點的關聯(lián)詞寫句子,再寫出他們的關系。
①因為掌握了科學的學習方法,所以他學習效率提高了
②知識的海洋是遼闊無邊的,所以學習是無止盡的。
③安徒生老爺爺坐在馬車上,臉上好像有一種寬慰的微笑,因為他已經(jīng)知道國王和小臣仆們
趕到城里去了。
④上面的關聯(lián)詞都是關系的關聯(lián)詞。
五,補充句子。
讀書之法。(宋——朱熹《性理精義》)
博觀而約取。(宋 —— 蘇軾 《送張琥》)
六、默寫古詩《江畔獨步尋花》。,這首詩是代詩人寫的,表達了的感情!
七,閱讀。
(1)多背一些名篇,儲存在記憶里,在一次次的()中,不斷地加深著(),就好像牛兒吃下草,經(jīng)過多次(),慢慢地(),慢慢地()。
⊙按原文填空
⊙我們背誦名篇,就像,牛兒多次,我們對名篇要一次
次;草兒被牛兒,名篇被我們。
⊙聯(lián)系自己的學習、生活實際,說說你對這段話的理解。
(2)這座鐘樓現(xiàn)在四面都是玻璃窗,從玻璃窗里我們都能看到木塔和遠處的荔枝林,越過
荔枝林能看見我們家鄉(xiāng)的大海和興化灣,那里有許多船。有一天我忽然想起來了,我要是能
夠從興化灣乘船出發(fā)到安徒生老爺爺?shù)墓枢l(xiāng)奧登塞去看看有多好啊!接著我就從奧登塞再出
發(fā)向北航行去看看愛斯基摩人的漁村,到了晚上便住在他們有雪覆蓋的屋子里。說不定能夠
從窗口看到美麗的北極光呢!
①用“”畫出作者身邊實在的景物。用“~~~~~”畫出作者想象的內(nèi)容。
②作者的想象大膽豐富而又符合實際,從“安徒生老爺爺?shù)墓枢l(xiāng)奧登塞到愛斯基摩人的漁
村,再到美麗的北極光”都深深的吸引著我們。由此可見,新奇豐富合理的想象來源于。
③聯(lián)系前文不同的閱讀內(nèi)容充分表現(xiàn)了那種讀書樂趣,請連線。
讀童話故事欣賞美的風景,增長知識
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第五篇:金屬單元復習題
金屬單元復習題
1.某新型“防盜玻璃”為多層結(jié)構(gòu),每層中間嵌有極細的金屬線,當玻璃被擊碎時,與金屬線相連的警報系統(tǒng)就會立刻報警。“防盜玻璃”能報警,這利用了金屬的()A.延展性B.導電性C.彈性D.導熱性 2.關于合金的說法正確的是()
A.合金是一種純凈物B.合金中只含有金屬元素
C.合金的強度、硬度一般比組成它們的純金屬更高,抗腐蝕性能等也更好 D.鐵銹是一種合金
3.鐵絲在空氣中灼熱發(fā)紅,但不能燃燒,這一事實與下列哪一因素關最密切()A.鐵絲的表面積B.氧氣的濃度C.燃燒區(qū)的溫度D.鐵的著火點
4.人類開發(fā)利用金屬單質(zhì)的年代與金屬活動性順序有著某種聯(lián)系,因此,人類開發(fā)利用金屬的年代最遲的金屬是()A.銅B.鐵C.鋁D.鉛
5.我國在春秋戰(zhàn)國時期就懂得將生鐵經(jīng)退火處理得到相當鑄鋼的器具(如鋒利的寶劍),生鐵退火處理的作用是()
A.除硫、磷雜質(zhì)B.適當降低了含碳量C.滲透合金元素D.改造表面結(jié)構(gòu)性質(zhì) 6.把一塊硬幣投入稀鹽酸中,過一段時間后溶液變成淺綠色,說明硬幣中含有()A.鋁B.鎂C.鐵D.銀
7.X、Y、Z三種金屬及化合物間發(fā)生如下化學反應:Y+ZCl2===Z+YCl2X+ZCl2===Z+XCl2 Y+2HCl===YCl2+H2↑X與稀鹽酸不反應。則X、Y、Z三種金屬的活動性由強到弱的順序是()A.Z>Y>XB.X>Y>ZC.Y>X>ZD.Y>Z>X
8.用實驗比較銅、鐵的金屬活動性,直接使用下列試劑不能達到目的的是()A.硫酸亞鐵溶液B.硝酸銀溶液C.鹽酸溶液D.硫酸銅溶液
9.在10-9~107 m范圍內(nèi),對原子、分子進行操縱的納米超分子技術往往能實現(xiàn)意想不到的變化。如納米銅顆粒一遇到空氣就會劇烈燃燒,甚至發(fā)生爆炸。下列說法正確的是()A.納米銅屬于化合物 B.納米銅無需密封保存
C.納米銅與普通銅所含銅原子的種類不同
D.納米銅顆粒比普通銅更易與氧氣發(fā)生反應
10.5角硬幣的外觀呈金黃色,它是銅和鋅的合金,市面上有人用它制成假金元寶行騙,小明同學用一種試劑揭穿了他。小明一定不會用的試劑是()A.硫酸銅溶液B.硝酸銀溶液C.鹽酸D.硝酸鈉溶液
11.鋰電池是新型的高能電池,以質(zhì)量輕、電容量大,頗受手機、手提電腦等用戶的青睞。某種鋰電池的總反應可表示Li+MnO2==LiMnO2。以下說法正確的是()
①該反應中Mn的化合價發(fā)生了變化 ②該反應屬于化合反應 ③LiMnO2為新型的氧化物④LiMnO2為鋰、錳、氧的合金
A.①②B.①③C.②③D.③④
12.向ZnSO4和CuCl2的混合溶液中加入過量的鐵粉,等充分反應后,過濾、洗滌、干燥,得到濾渣,則該濾渣中含有的金屬是()
A.Zn、FeB.Zn、CuC.Fe、CuD.Zn、Fe、Cu
13.常溫下,下列各組物質(zhì)中相互間能發(fā)生化學反應的是()A.碳和氧氣 B.銅和硫酸鋅溶液 C.鋁和氧氣 D.氧化銅和水 14.下列有關鐵及其化合物的轉(zhuǎn)化關系中,不能實現(xiàn)的是()A.Fe--Fe3O4B.Fe2O3--FeCl3C.Fe--FeSO4D.Fe(NO3)--3FeCl
315.有A、B兩塊等質(zhì)量的鐵,將A浸入稀硫酸中,將B浸入硫酸銅溶液中,過一會兒同時取出晾干,兩塊鐵的質(zhì)量mA、mB應該是()A.mA<mBB.mA>mBC.mA=mBD.mA≥mB
16.某同學想用實驗證明FeCl3溶液顯黃色不是Cl-造成的,下列實驗無意義的是()A.觀察KCl溶液沒有顏色
B.向FeCl3溶液中滴加適量氫氧化鈉溶液,振蕩后靜置,溶液黃色消失 C.FeCl3溶液中滴加適量無色硝酸銀溶液,振蕩后靜置,溶液黃色未消失 D.加水稀釋后FeCl3溶液黃色變淺
17、將等質(zhì)量的ABC三中金屬,同時放入三份溶質(zhì)質(zhì)量分數(shù)相同且足量的稀鹽酸中,反應生成氫氣的的質(zhì)量與反應時間的關系如圖所示。根據(jù)圖中的信息,可以得到的正確結(jié)論是()提示:ABC三種金屬在化合物中都顯+2價。A:放出H2的質(zhì)量是A>B>CB:金屬的活動順序是A>B>C
C:反應速率最大的是AD:相對原子質(zhì)量是C>B>A18、向AgNO3,Cu(NO3)3,Zn(NO3)3的混合溶液中加入一些鐵粉,反應完全后過濾,下列情況不可能存在的是()
A、濾紙上有Ag、Cu、Fe,濾液中有Zn2+、Fe2+B、濾紙上有Ag、Cu、,濾液中有Zn2+、Fe2+ C、濾紙上有Ag、Cu、,濾液中有Cu2+、Zn2+、Fe2+ D、濾紙上有Ag、Cu、Fe,濾液中有Cu2+、Zn2+、Fe2+
19.經(jīng)過課外學習發(fā)現(xiàn),錳(Mn)也能排入下列金屬活動性順序中:K、Ca、Na、Mg、Al、Mn、Zn、Fe、Sn、Pb、(H)、Cu、Hg、、Pt、Au ⑴用元素符號將上述金屬活動性順序補充完整。
⑵已知錳鹽中錳元素顯+2價。寫出一個有金屬錳參加的置換反應方程式:。
20.鋁合金材料屬于()(填“純凈物”、“混合物”或“單質(zhì)”)。鋁是活潑金屬,生活中的鋁鍋卻有較強的抗腐蝕性,原因是()(用化學方程式表示)。如果將鋁片投入稀硫酸中,片刻之后才有氣泡產(chǎn)生,請用化學方程式表示這一過程:()。
21.要除去FeSO4中含有的CuSO4雜質(zhì)。可以在其溶液中加入__________,充分反應后,再用____________方法除去雜質(zhì);該反應的化學方程式是:__________________________。22.以鐵、水、稀鹽酸、氧氣、稀硫酸、硫酸銅溶液為原料,根據(jù)下列化學反應類型,寫出相應的化學方程式:
(1)化合反應:______________________________;(2)分解反應:______________________________;
(3)置換反應:__________________,___________________,_____________________。23.已知A、B、C、D四種物質(zhì)都含有同一種元素,其中A是單質(zhì),B是黑色固體,C是紅色固體。它們之間存在著如下轉(zhuǎn)化關系:(1)A在不同條件下能夠轉(zhuǎn)化成B或C;(2)A和稀硫酸反應有D生成;
(3)在高溫條件下,B、C分別和無色氣體E反應,都能生成A和另一種無色氣體。根據(jù)上述
信息,寫出下列物質(zhì)的化學式:
A;C;D;E。
24.小亮在實驗室用一塊生鐵與稀鹽酸反應,觀察到生鐵表面出現(xiàn),同時發(fā)現(xiàn)充分反應后的液體中有少量黑色不溶物。
提出問題:這種黑色不溶物是什么呢? 猜想與假設:這種黑色不溶物中可能含碳。
設計方案:將黑色固體灼燒,若黑色固體中含有碳,就會有________氣體生成,要想進一步確定這種氣體,可以用_______________檢驗。
進行實驗:小亮按設計方案進行實驗,得到了預想的結(jié)果。
解釋與結(jié)論:由此小亮得出結(jié)論:(1)生鐵中___碳(含/不含);
(2)碳與稀鹽酸_____反應(能/不能),鐵與稀鹽酸___(能/不能)反應。25.如圖測所示,彈簧秤下掛著一重物A,燒杯中盛有溶液B,試根據(jù) 要求回答下列問題:(1)若A為鐵塊,B為稀硫酸,則將A放入B中,過一會兒,彈簧秤的讀數(shù)將(填 “變大”、“變小”或“不變”,下同)_____________;(2)若A為鐵塊,B為硫酸銅溶液,則將A放人B中,過一會兒,彈簧秤的讀數(shù)將_________。
26.如圖所示,大試管底部有螺旋狀的光亮的鐵絲,把試管倒插入水中,放置一周后,觀察到鐵絲表面有______生成,試管內(nèi)的水面將_______,產(chǎn)生以上現(xiàn)象的原因是__________________________。27.(2008年煙臺市)置換反應是化學反應的基本類型之一。
(1)金屬與鹽溶液之間的置換反應,一般是活動性較強的金屬可把活動性較弱的金屬從其鹽溶液中置換出來,如銅和硝酸銀溶液反應,其化學方程式為。(2)非金屬單質(zhì)也具有類似金屬與鹽溶液之間的置換反應規(guī)律,即活動性較強的非金屬可把活動性較弱的非金屬從其鹽溶液中置換出來,如在溶液中可發(fā)生下列反應: C12+2NaBr=2NaCl+Br2 ;I2+Na2S=2NaI+S↓+Br2;Br2+2KI=2KBr+I2由此可判斷: ①S、C12、I2、Br2活動性由強到弱順序是。②下列化學方程式書寫錯誤的是。(A)C12+2NaI=2NaCl+I
2(B)I2+2KBr=2KI+Br2
(C)Br2+Na2S=2NaBr+S↓
(D)C12+K2S==2KCl+S↓
28.(2008年眉山市)同學們一起探究鋁、鐵、銅三種金屬的活動性,小剛同學設計了用銅絲、鐵絲、鋁絲和稀鹽酸,只用一只試管,取一次鹽酸的探究方案。請你和他們一起完善下表的探究方案并回答有關問題。(1)
結(jié)論:金屬活動性Al > Fe > Cu
(2)將鋁絲插入前應進行的操作是 ;(3)小華同學認為在小剛設計的方案中,只要補充一個實驗,就可得出Al > Fe > H >Cu的結(jié)論。小華要補充的實驗是;
(4)小強同學認為要得到Al > Fe > H >Cu的結(jié)論,不必做補充實驗,中需將小明同學方案中插入金屬的順序調(diào)整即可,你認為調(diào)整后插入金屬的順序是。
29、為了比較Ag、Cu、Fe三種金屬的活動性,小明選擇了三種藥品來進行試驗(),小芳認為還可以選擇另外的三種藥品,你認為是()。
30.生鐵和鋼都是鐵的合金,生鐵中碳的含量在2.0%~4.3%之間,鋼中碳的含量在0.03%~2.0%之間。將一塊質(zhì)量為8.5 g的鐵合金放入錐形瓶中,再向錐形瓶中加入91.9 g稀硫酸,恰好使鐵合金中的鐵完全反應(碳不溶于稀硫酸,鐵合金中其它元素含量很低,可忽略不計),測得生成H2的質(zhì)量為0.3 g。試根據(jù)計算回答:
(1)該鐵合金是生鐵還是鋼?
(2)反應后所得溶液的溶質(zhì)質(zhì)量分數(shù)。
31.小娟想測定Cu—Zn合金和Cu—Ag合金中銅的質(zhì)量分數(shù),實驗室只提供了一瓶末標明溶質(zhì)質(zhì)量分數(shù)的稀鹽酸和必要的儀器。
(1)你認為她能測出銅的質(zhì)量分數(shù)的合金是合金。
(2)小娟取該合金的粉末32.5 g,與足量該鹽酸充分反應后,經(jīng)測定產(chǎn)生了0.4 g氣體,請你幫助她計算出該合金中銅的質(zhì)量分數(shù)?
(3)若想測出該鹽酸的溶質(zhì)質(zhì)量分數(shù),你認為實驗時必須提供和測出的數(shù)據(jù)是(選填序號)A.參加反應的合金質(zhì)量B.參加反應的稀鹽酸質(zhì)量 C.生成的氣體質(zhì)量D.參加反應的稀鹽酸的體積和密度