广州市越秀区学年第一学期九年级化学期末考试试题

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2022-2023学年广东省广州市越秀区广州大附属中学化学九年级第一学期期中质量检测试题含解析

2022-2023学年广东省广州市越秀区广州大附属中学化学九年级第一学期期中质量检测试题含解析

2022-2023学年九上化学期中模拟试卷注意事项1.考试结束后,请将本试卷和答题卡一并交回.2.答题前,请务必将自己的姓名、准考证号用0.5毫米黑色墨水的签字笔填写在试卷及答题卡的规定位置.3.请认真核对监考员在答题卡上所粘贴的条形码上的姓名、准考证号与本人是否相符.4.作答选择题,必须用2B铅笔将答题卡上对应选项的方框涂满、涂黑;如需改动,请用橡皮擦干净后,再选涂其他答案.作答非选择题,必须用05毫米黑色墨水的签字笔在答题卡上的指定位置作答,在其他位置作答一律无效.5.如需作图,须用2B铅笔绘、写清楚,线条、符号等须加黑、加粗.一、单选题(本大题共10小题,共20分)1.能用过滤法将下列混在一起的物质分离的是()A.酱油和食醋B.铜粉和铁粉C.味精和蔗糖D.食盐和泥沙2.下列物质存放在烧杯中一段时间后,质量变小且不变质的是()A.烧碱B.浓硫酸C.浓盐酸D.生石灰3.下列是中国古代四大发明的某一工艺流程或应用,其中属于化学变化的是( ) A.破布捣烂(造纸) B.活字排版(印刷) C.烟花燃放(火药) D.航海导向(指南针)4.如图所示微观变化的化学反应类型,与下列反应的反应类型一致的是( )A.2KClO32MnO加热2KCl+3O2B.2HI+Cl2═2HCl+I2C.CO2+C 高温2CO D.2HCl+CuO═CuCl2+H25.“加碘盐”“含氟牙膏”“高钙牛奶”“补铁酱油”中的“碘、氟、钙、铁”应为( )A.原子B.离子C.分子D.元素6.在进行“氧气的实验室制取与性质”实验时,某同学制得的氧气不纯。

你认为可能的原因是( )A.用排水法收集O2时,集气瓶装满水B.用向上排空气法收集O2时,导管伸入到集气瓶的底部C.用排水法收集O2时,导管口冒出气泡,立即收集D.用排水法收集O2,收集满后,在水下盖上玻璃片7.成语是中华民族文明与智慧的结晶。

下列成语所描述的变化属于化学变化的是A.滴水成冰B.钻木取火C.木已成舟D.花香四溢8.小金在做硫燃烧实验时,进行了如下操作:①在铺有细沙的燃烧匙里放入少量硫;②将燃烧匙在酒精灯火焰上加热,直至硫燃烧;③将燃烧匙伸入盛有氧气的集气瓶中。

广东省广州市越秀区2020-2021学年第一学期期末考试九年级语文试题(扫描版,无答案)

广东省广州市越秀区2020-2021学年第一学期期末考试九年级语文试题(扫描版,无答案)

2020学年第一学期学业水平调研测试九年级语文试卷本试卷共8页,分四部分,共22小题,满分120分。

考试用时120分钟。

注意事项∶1.选择题的答案用2B铅笔把答题卷上选择题答题区中对应题目选项的答案信息点涂黑,如需改动、用橡皮擦干净后,再选涂其他答案;答案不能写在试题上。

2.非选择题,答案必须用黑色字迹的钢笔或签字笔写在答题卷各题目指定区域内的相应位置上;如需改动,先划掉原来的答案,再写上新的答案、改动后的答案也不能超出指定的区域;不准使用铅笔、圆珠笔和涂改液。

不按以上要求作答的答案无效。

3.考试结束后,将本试卷和答题卷一并交回。

第一部分积累与运用(共24分)一、(5小题,15分)1.下列加点字读音全部正确的一项(3分)A.妖娆.ráo娉.pīng婷.鲜妍.yàn矫.jiǎo揉造作B.摇曳.yè瞥.piē见劫.jué掠忸怩.ní作态C.箴.zhēn言枉.wǎng然栈.zhàn桥间.jiān不容发D诓.kuāng骗豢.quán养怨.chàng怅不省.xǐng人事2.下列词语没有错别字的一项是(3分)A.旁骛亵渎惊骇箪食壶浆B.遁词儒养阴晦根深蒂固C.恪守拜谒筵席相得益章D.麾下冠冕宽宥致之不理3.下列句子中,加点词语运用不恰当的一项是(3分)A.张桂梅为云南贫苦山区的教育事业孜孜不倦....地奔波了几十年,推动创建了中国第一所免费女子高中。

B.无数英雄为民族独立、人民解放,为国家富强、人民幸福英勇献身,他们的前.仆后继...换来了我们的岁月静好。

C.一男子酒驾发生事故,在接受调査时竟然谎称是其10岁儿子驾车所为,妄图李代桃僵....,逃避法律责任。

D.整个劳作过程他都没有参与,最后却轻而易举....,把功劳归为己有,这种厚脸皮的人,我们不屑与他为伍。

4.下列句子没有语病的一项是(3分)A.杨丽萍用优美的舞姿、灵动的眼神,塑造了金孔雀形象,成为具有代表性的艺术形象。

广东省广州市越秀区2022-2023学年九年级上学期期末语文试题

广东省广州市越秀区2022-2023学年九年级上学期期末语文试题

2022学年第一学期期末诊断性调研九年级语文本调研题共12页,满分120分。

建议完成时间:120分钟。

第一部分积累与运用(共24分)一、(5小题,共16分)1.下列词语中,每对加点字的读音都相同的一项是(2分)A.调和/调停侥幸/分外妖娆B.游弋/摇曳拮据/不足为据C.濡养/懦夫分晓/不由分说D.愕然/困厄汲取/言不及义2.下列词语中,没有错别字的一项是(2分)A.恪守根深蒂固羡暮丰功伟绩B.怨怅自渐形秽惊骇郑重其事C.遁词不攻自破恣睢李代桃僵D.流盼顿开茅塞阴晦走头无路3.下列句子中,加点词使用最恰当的一项是(2分)A.阅读时要注意做到断章取义,即根据上下文来理解重点词语或句子的含义。

B.从赛程来看,中国代表团在本届冬奥会上打破五金的纪录已是十拿九稳了。

C.考试在即,一到课间,同学们就前赴后继地涌向办公室找老师们请教问题。

D.这部短篇小说题材新颖,人物个性鲜明,只可惜结尾画龙点睛,成为败笔。

4.下列句子中,没有语病的一项是(2分)A.近期,随着鄱阳湖水位逐步回升,大批越冬候鸟陆续抵达,水鸟在湖区自由翱翔。

B.新能源汽车能减轻日常用车成本,又能响应节能减排号召,成为了不少人的新宠。

C.今年第22号台风“尼格”,正以大约每小时15公里左右的速度向偏西方向移动。

D.该微信公众号设立的目的,是为了给基层干部表达心声、碰撞思想提供交流平台。

九年级语文第1页(共12页)5.文佳正在市少儿图书馆新落成的分馆担任志愿者,主要负责解答咨询、借阅指引及组织活动等工作。

请根据提示,完成以下任务。

(8分)(1)任务一:文佳现正接待前来参加“读者荐书活动”的小读者,请你用简明得体的语言,替文佳写一段话向他们作自我介绍。

(3分)(2)任务二:图书馆在征集以“文明读者”为主题的宣传标语,小读者们拟写了两则宣传语,请任选一则推荐给图书馆,并写出推荐理由。

(2分)①别因有意思,就有意“撕”。

②我知道你是“书虫”,但是别“咬”我。

2022-2023学年广东省广州市越秀区二中应元学校九年级上学期期末化学试题

2022-2023学年广东省广州市越秀区二中应元学校九年级上学期期末化学试题

2022-2023学年广东省广州市越秀区二中应元学校九年级上学期期末化学试题1.生活中常见的下列现象,属于化学变化的是A.湿衣服晾干B.雪糕融化C.玻璃瓶破碎D.米饭变馊2.下列物质的性质与所相对应的用途没有因果关系的是()A.石墨能导电﹣﹣作电极B.干冰升华吸热﹣﹣用于人工降雨C.稀有气体的性质稳定﹣﹣作保护气D.氧气的密度比空气略大﹣﹣用于急救病人3.从防火、灭火、自救等安全知识判断,下列做法错误..的是A.室内着火时不急于打开门窗B.炒菜时油锅着火用锅盖盖灭C.用明火检验燃气是否泄漏D.发生火灾逃生时用湿毛巾捂住口鼻4.下列不属于空气质量指数(简称AQI)中污染物监测范畴的是A.CO B.CO 2C.SO 2D.PM2.55.下列实验设计中,正确的是A.倾倒液体B.称量固体C.检查气密性D.加热液体6.元素观是化学的重要观念之一。

下列有关元素的说法错误的是A.物质都是由元素组成的B.同种元素的原子核内中子数相同C.在化学变化中元素的种类不发生改变D.元素周期表中原子序数等于该元素原子核内的质子数7.如图是金刚石、C60和石墨的结构示意图。

下列说法不正确...的是A.这三种物质都是碳的单质B.常温下,它们的化学性质都比较稳定C.石墨转化成金刚石属于物理变化D.这三种物质完全燃烧的产物都是二氧化碳8.下列说法中正确的是A.木炭在空气中燃烧发出白光B.氧气易溶于水,鱼虾可以在水中生存C.红磷在空气中燃烧生成大量白雾D.硫燃烧时生成有刺激性气味的气体9.我国最早期的新冠病毒灭活疫苗是在苯酚(C6H6O)防腐的条件下制成的,下列有关苯酚的说法正确的是A.从微观上看:1个苯酚分子中含有13个原子B.从宏观上看:苯酚由6个碳元素、6个氢元素和1个氧元素组成C.从分类上看:苯酚属于氧化物D.从质量上看:苯酚中碳、氢两种元素的质量比为1:110.砷化镓(GaAs)是一种“LED”绿色节能光源材料,镓元素的相关信息如图。

2023-2024学年广东省广州市越秀区九年级上学期期末英语试卷(无听力 无答案)

2023-2024学年广东省广州市越秀区九年级上学期期末英语试卷(无听力 无答案)

2023-2024越秀区九上期末考真题本卷完成时间:100分钟;满分90一、语法选择A kind-heated man, seeing a butterfly struggling(努力) to free itself from its cocoon, very gently, he helpedopened the cocoon. The butterfly __1__, but could not fly. The man didn’t know that onlythrough the birth struggle can the wings grow __2__ enough for flight.I call the story “learning to love with an open hand.” I am learning that I must free theone I love, for if I try to control I lose __3__ I try to hold.__4__ I try to change someone I love because I feel I know how that person should be, I take away an important right(权力) of his or hers, __5__ right to take responsibility for oneself and to choose one’s own life. No matter how kind my purpose is, I can limit and hurt him or her by the kindest acts __6__ protection or concern.As I learn and practice more and more, I can say to the one I love: “I love you, I value you, I respect you and I trust that you have the power __7__ all that it is possible for you to become. I love you __8__ much that I can set you free to walk beside me in joy and in sadness. I will share you tears, but I will not ask you __9__. I will care and comfort you, but I will not hold you up when you can walk __10__. I will stand ready to be with you in your loneliness __11__ I will not take away from you. Sometimes I will be angry and when I am, I will try to tell you openly so that I need not hate our __12__. I cannot always be with you or hear what you say for there are times when I must listen to myself and care for myself, and when that happens, I will be as __13__ with you as I can be.”I __14__ to say this to those I love and for whom I care. And I always remind __15__: loving with an open hand.1. A. freed B. has freed C. was freeing D. was freed2. A. strong B. stronger C. strongest D. strongly3. A. why B. when C. what D. whose4. A. Although B. If C. Unless D. Until5. A. the B. a C. an D. /6. A. in B. about C. with D. of7. A. become B. to becoming C. to become D. became8. A. very B. too C. really D. so9. A. don’t cry B. not to cry C. not crying D. not cry10. A. alone B. lonely C. loneliness D. lone11. A. who B. where C. how D. which12. A. differs B. differences C. differently D. different13. A. more honest B. the most honest C. honest D. honestly14. A. learned B. am learning C. was learning D. had learned15. A. I B. me C, myself D. mine二、完形填空He was an old man who fished alone in a small boat on the sea and he had gone eighty-four days now without taking a fish. In the first forty days a boy had been with him. But after forty days without a fish, the boy’s parents told him that the old man was now Salao, which is the symbol of being __16__, and the boy had gone with another boat that caught three good fish the first week. However, the old man’s empty boat brought the boy __17__ because the sail(航行) looked like the flag of forever failure.The old man was thin with deep wrinkles(皱纹) in the back of his neck. His face was terribly __18__ because of the strong sunlight on the sea every day and his hands had the deep scars(伤疤) from dealing with heavy fish on the lines. But none of these scars were new. Everything about him was old except his eyes and they were the same color as the sea and were __19__ and unbeatable.“Santiago,” the boy said to him as they climbed the bank from the sea. “I could go with you again. We’ve made some money.”The old man had taught the boy to __20__ and the boy loved him.“No,” the old man said. “You’re with a lucky __21__. Stay with them.”“But remember how you went eighty-seven days without fish and then we __22__ big ones every day for three weeks.”“I remember,” the old man said.“It was papa who made me leave. I am a boy and I must __23__ him.”“I know,” the old man said. “It is quite normal.”“He doesn’t have much confidence.”“No,” the old man said. “But we have. Haven’t we?”“Yes,” the boy said. “Can I __24__ you a beer?”“Why not?” the old man said “Between two __25__.”16. A. brave B. strong C. cruel D. unlucky17. A. youth B. sadness C. peace D. freedom18. A. brown B. dirty C. pale D. yellow19. A. terrible B. bored C. cheerful D. excited20. A. ship B. climb C. drink D. fish21. A. boat B. man C. fish D. dog22. A. beat B. served C. caught D. tricked23. A. love B. follow C. thank D. tell24. A. cook B. send C. make D. offer25. A. people B. villagers C. fishermen D. boys三、阅读第一节阅读理解(A)Confucius once heard two of his students arguing. One was gentle and peaceful. The other was smart and kind but had a quick temper. If he wished to do a thing, he did it. If anyone tried to stop him, he would show sudden and terrible anger.One day, after another argument, blood came from his mouth. In great fear, he went to Confucius.“What shall I do with my body?” he asked, “I fear I shall not live long. It may be better that I no longer study and work. You love me as a father. Tell me what to do for my body.”Confucius answered, “Tsze_Lu, you are wrong about your body. It is not the study, nor the work in school, but your great anger that causes the trouble.”“When you and Nou_Wui argued, he was at peace and happy again in a short time but it took you too long to get over your anger. Also, you get angry with others too easily. If you don’t use moreself-control, you can’t expect to live long. Now tell me how many teeth you have.”“Thirty-two.”“How many tongues(舌头)?”“Just one.”“How many teeth have you lost?”“I lost one when I was nine years old, and four when I was about twenty-six years old.”“And your tongue -- is it still perfect?”“Oh, yes.”“You know Mun-Gun, who is quite old?”“Yes, I know him well.”“How many teeth do you think he had at your age?”“I do not know.”“How many does he have now?”“Two, I think. But his tongue is perfect, though he is very old.”“You see the teeth are lost because they are strong, and keep going after everything they want. They are hard and hurt the tongue many times. The tongue is peaceful and gentle with the teeth. It never grows angry and fights them. Yet, it is always there until the end.“And so it is with man. The strongest to fight, is the first to fail; and you, Tsze-Lu, will be even so if you don’e learn the great lesson of self-control.”26. According to the passage, who of the following got angry easily?A. Confucius.B. Tsze-Lu.C. Nou-Wui.D. Mun-Gun.27. Why did Tsze_Lu go to Confucius for help?A. He always argued with others.B. Others students didn’t like him.C. He was worried about his health.D. He was afraid he couldn’t study any more.28. From this story, which of the following best describe Confucius?A. Gentle and hard-working.B. Confident and good at learning.C. Serious and easy-going.D. Patient and skillful in teaching.29. What lesson can we learn from this story?A. We should never argue with others.B. Gentle people live longer than strong people.C. We should control ourselves and never stay angry for long.D. Always protect our teeth because they could be easily lost.(B)① A new study shows that roosters can identify(辨认) themselves in a mirror. The surprising result raises questions not just about how smart roosters are, but about how scientists test animal intelligence.② Scientists use Mark Test to test whether an animal can identify itself. First of all, a mark is put on ananimal, usually in a place that can only be seen with a mirror. Then the animal is placedbefore a mirror. If it seems to pay attention to the mark, scientists believe the animal hasidentified itself.③ The Mark Test is often seen as a good way to learn how smart an animals is. __▲__ Scientists at a university in Germany recently ran the Mark Test on roosters. They put a pink mark on the chest of the roosters. But when the roosters looked in a mirror, they didn’t seem to notice the mark.④ So the scientists tried a new test by using the shadow(阴影) of hawk(鹰) to see whether or not the rooster thought it was alone. Roosters may make loud calls to warn nearby chickens when a hawk flies above. If they’re alone, they remain quiet.⑤ First, the scientists helped the roosters get used to being in a closed -- in space and having a mirror around. After some time, they took the mirror out and ran several tests by making a hawk shadow appear above the bird and watching how it reacted.⑥ When there was no mirror, the roosters reacted as usual. They called out when they were near another rooster, but remained quiet after the other rooster was taken out by the scientists.⑦ Then, the mirror was put back. When a rooster could see itself in the mirror, it remained silent even with the hawk shadow above it. Later, the scientists put the other rooster behind the mirror. It still didn’t make any sound.⑧ The results show that the roosters knew they were seeing themselves in the mirror, and not other roosters. That shows that the Mark Test may not be a good test of whether an animal can identify itself.⑨ The scientists hope their results will encourage other scientists to look for better ways of testing how smart animals are. It may turn out that some kinds of animals are more intelligent than people though.30. What is the first step for the scientists to do the Mark Test?A. Paying attention to a mark,B. Putting a mark on animal.C. Feeding an animal some food.D. Placing an animal before a mirror.31. Which of the following can be put in __▲__ in paragraph 3?A. As a result, they need a better way.B. However, some scientists did another test on roosters.C. Until recently, only one kind of bird had passed the test.D. But some scientists believe it doesn’t work well for all animals.32. According to paragraphs ⑤-⑦, which of the following shows the correct order of the second test?A. b-a-e-c-dB. b-e-a-c-dC. a-b-d-e-cD. a-e-b-d-c33. Which part of the magazine is the passage most probably from?A. Animal WorldB. Quiz TimeC. Science DiscoveryD. Book Review(C)A recent study says volunteering can be good for health. Maybe it could help with some problems the youth are facing these days.Kids and teenagers who volunteer aren’t just helping others. They might also be helping themselves. The new study found that volunteering through school or other groups is connected with better health among children and teens.Kids who took part in voluntary work were 34% more likely(可能的) to be in very good physical health than those who didn’t, the study found. And those who volunteered were 66% more likely to be considered doing well in general. Kids aged 12 and older who volunteered were 25% less likely to have anxiety than those who didn’t. The findings come from information provided by the parents of some 50,000 kids in the United States ages 6 to 17. About half of those parents reported that their kids did voluntary work.The result of the study comes at an important time for youth health. In recent years, more and more young people suffer from anxiety. More than 40% of high school students reported experiencing feelings of sadness or hopelessness in 2021. So there’s a clear need for convenient and useful methods of solving this problem. Giving back to the society may be one choice. And this study isn’t the only one to reach that conclusion.However, studies like this have limitations. Parents answered questions about their kids’ health and voluntary activity. But a parent might not know if their child experiences anxiety(焦虑) or considers themselves to be doing well.34. How did the author organize paragraph 3?A. By telling stories.B. By listing numbers.C. By answering questions.D. By giving explanations.35. What does the underlined word “limitations” in paragraph 5 mean?A. Ending.B. Weakness.C. Information.D. Consideration.36. What can be the best title of this passage?A. Helping Others, Helping OneselfB. Choices for Voluntary WorkC. Voluntary Work Builds Kid’s HealthD. Healthy People Do More Volunteering(D)How much physical activity do I need?Physical activity should be part of your daily life, whether you play sports, take P.E lessons in school, do housework, or get around by biking or public transportation. Taking a walk can be great for your health if you are able to do so safely. The advantages of physical activity can include:·improved health·reaching and keeping a healthy weight·better thinking, mood, and school performance·fewer chance of having health problemsTeens are recommended to do at least 1 hour of physical activity every day. However, you don’t have to do your 60 minutes of activity all at once. In the morning, try walking to the bus stop or to school. At school, try being active with friends in P.E. lessons, sports, or other activities. After school, try joining a sports team or taking your dog for a walk.How can I add more physical activity to my day?Spend time away from your smartphone and other screensSpending time on your smartphone, on the sofa watching TV, or playing video games can add more hours of inactivity to your day. Try to limit your screen time to less than 2 hours each day.Be active with friends and family members·Join a sports team or dance club to be more active and make new friends.·Challenge your friends and family members to do activities with you, like charity walks, fun runs, or interesting games.Try free or low-cost choices·You can use school playgrounds and some free sports centers.·If you want to play a sport or game that requires equipment, check with your neighbors or friends at school to see if you can borrow or share them.·Look for dance and other exercise videos at your library or online. If you have a gaming system, check out active sports games.·Daily housework, like cleaning your room or taking out the rubbish, can keep you moving.37. Who is the passage written for?A. P.E. teachers and club coaches.B. Basketball players and dancers.C. Little kids having some health problems.D. Teenagers looking for information about health.38. Which of the following is the advantage for teenagers doing physical activities?A. Losing weight in a short time.B. Stopping getting sick.C. Doing better at school.D. Being happy all the time.39. How long should a teenager do the physical activity for a a week?A. At least 7 hours in total.B. Less than 400 minutes.C. 60 minute for one time.D. 2 hours at different time.40. How can we add more physical activities to a day?A. Spend more time on smartphone.B. Make friends with family members.C. Watch more exercise videos.D. Play some sports games.第二节阅读填空All around the world there are small changes taking place at the side of roads behind school playgrounds and on all kinds of land across towns and cities. ____41____ They are becoming a great place for both wildlife and local people who may not easily get close to nature in daily lives. This is the Tiny Forests movement. ____42____ Tiny Forests first appeared as an idea in the 1970s. As the scientists went on to share the idea with others, it soon took off in many places in Asia and Europe.____43____ In fact, the movement focuses on urban areas where getting close to nature is not that easy. In a Tiny Forest, there must be at least 600 trees, and trees are planted much closer together and without chemicals.____44____ This can help make sure that tiny forests grow up to ten times faster than other forests, which means they attract more wildlife.People see it as a chance to try to break the growing disconnect between people and the nature. It’s also thought these places could help reduce the risk of flooding, remove carbon from the air and fight climate change. ____45____Now more and more countries are considering becoming part of the movement, which means more tiny forests will appear soon.A. So how does it work?B. Tiny forests like the size of tennis courts are appearing.C. It hopes to show that best things in life really come in small actions.D. It is even said to be useful in improving the health of the local people.E. There are usually around 30 different kinds of trees from the local area.四、写作第一节语篇填词A farmer had a donkey and he usually took a rest after work with tying his donkey with a rope to a tree.One day, the farmer forgot to take the rope. Then he decided to lie down, holding the donkey’s ears to stop it running away. But in this way, the donkey didn’t feel comfortable and the farmer wasn’t able to have a rest 46) e___________. An old man passed by and saw what happened. He 47) s___________ that the farmer should take the donkey to the place where it was tied every day. Even without a real rope, it would not run away. The farmer did what the old man said and then took a nap. When the farmer woke up, he was surprised to see the donkey standing in the same place. But the donkey drove him 48) m___________ as the donkey was not prepared to leave for home.The farmer had no 49) i___________ what to do. Luckily, he saw the old man again. He ran up the told him the donkey’s strange behavior. The old man laughed and said, “Though you 50) p___________ to tie up the donkey, did you untie it? Go and untie the imaginary rope.” The farmer followed the advice and thanked the great mind for his help. Now he understood that his donkey was tied by its thoughts, not by the rope.In our daily life, if we get used to some thoughts or bad habits and never manage to “untie” them, we will never make any progress.第二节完成句子51. 《永乐大典》被认为是了解中国文化的重要书籍之一。

初中化学 2022-2023学年广东省广州市越秀区九年级(上)期末化学试卷

初中化学 2022-2023学年广东省广州市越秀区九年级(上)期末化学试卷

2022-2023学年广东省广州市越秀区九年级(上)期末化学试卷一、选择题:本题包括14小题,每小题3分,共42分。

每小题给出的四个选项中,只有一项最符合题意。

错选、不选、多选或涂改不清的,均不给分。

A .空气→液氧B .自来水→蒸馏水C .石油→煤油D .氯酸钾→氯化钾1.(3分)化学变化创造物质。

下列转化要通过化学变化才能实现的是( )A .用稀有气体氦填充玩具气球B .在通风不好的室内吃炭火锅C .向燃着的酒精灯里添加酒精D .在开着火的炉灶边倾倒面粉2.(3分)在劳动实践和化学实验中要保证安全。

下列做法安全的是( )A .硫粉在空气中燃烧,火焰呈蓝紫色B .铁丝在氧气中燃烧,火星四射,生成黑色固体C .木炭在氧气中燃烧,发出白光,有刺激性气味气体产生D .把光亮的铁钉放入硫酸铜溶液中,铁钉表面变红,溶液由浅绿色变成蓝色3.(3分)下列实验现象的描述正确的是( )A .明矾是一种常用的絮凝剂B .过滤可以除尽水中的杂质C .活性炭能将硬水变成软水D .投药消毒后水中再无杂质4.(3分)自来水厂净水过程如图所示。

下列有关说法正确的是( )5.(3分)下列物质的性质与用途之间有直接联系的是( )选项性质用途A N 2难溶于水N 2用于食品防腐BCO 2不支持燃烧CO 2用作气体肥料A .AB .BC .CD .DC 金刚石硬度大金刚石用于制作钻头D石墨有导电性石墨用于生产铅笔芯A .天然气的占比有所增加B .化石能源仍是重要能源C .石油的占比要继续降低D .将会大力发展燃煤火电6.(3分)“十三五”时期广州市能源体系稳步向清洁低碳的方向转变(如图)。

下列有关广州能源的说法不正确的是( )A .硝酸铵是由氮、氢、氧三种元素组成的氧化物B .硝酸铵的相对分子质量计算式为14+1×4+16×3C .硝酸铵中铵离子和硝酸根离子的个数比为4:3D .硝酸铵的含氮量比碳酸氢铵(NH 4NO 3)的高7.(3分)硝酸铵(NH 4NO 3)可用作氮肥。

广东省广州市越秀区广东实验中学2023-2024学年九年级上学期10月月考化学试题

广东省广州市越秀区广东实验中学2023-2024学年九年级上学期10月月考化学试题

2023学年广东实验中学第一学期10月阶段调研九年级化学本试卷共8页,20小题,满分90分。

考试用时60分钟。

注意事项:1.答题前,考生务必在答题卡第1面和第3面上用黑色字迹的钢笔或签字笔填写自己的考生号、姓名;将自己的条形码粘贴在答题卡的“条形码粘贴处”。

2.选择题每小题选出答案后,用2B铅笔把答题卡上对应题目的答案标号涂黑;如需改动,用橡皮擦干净后,再选涂其他答案标号。

答案不能答在试卷上。

3.非选择题答案必须用黑色字迹的钢笔或签字笔写在答题卡各题目指定区域内的相应位置上,作图可用2B铅笔;如需改动,先划掉原来的答案,然后再写上新的答案,改动后的答案也不能超出指定的区域;不准使用铅笔(作图除外),涂改液和修正带。

不按以上要求作答的答案无效。

4.考生必须保持答题卡的整洁,考试结束后,将本试卷和答题卡一并交回。

一、选择题:本题包括14小题,每小题3分,共42分。

每小题给出的四个选项中,只有一项最符合题意。

错选、不选、多选或涂改不清的,均不给分。

1.下列过程,发生了化学变化的是A.利用砂纸磨亮镁条B.利用液氮制迨低温C.利用二氧化碳人工合成淀粉D.利用排水法收集氢气2.在劳动实践和化学实验中要保证安全。

下列做法安全的是A.用稀有气体氦填充玩具气B.在实验室直接用手接触药品C.向燃着的酒精灯里添加酒精D.将实验废水直接倒入下水道3.空气的成分中,体积分数约占78%的是A.O2B.N2C.CO2D.稀有气体4.生机勃勃的地球离不开空气,下列关于空气的说法不正确的是A.稀有气体可用于霓虹灯的制作B.CO2是植物光合作用的重要原料C.SO2排放是导致酸雨的原因之一D.PM2.5的含量越高空气质量越好5.下列物质中,属于纯净物的是A.液氧B.糖水C.食醋D.大理石6.下列关于氧气的叙述中,正确的是A.鱼虾能在水中生存是由于氧气易溶于水B.拉瓦锡通过实验得出空气是由氮气和氧气组成的C.用于病人医疗急救的氧气浓度越高越好D.氧气是一种化学性质活泼的气体,能和所有的物质发生化学反应7.推进绿美广东生态建设从我做起。

2022-2023学年九年级上学期 期末测试化学试卷

2022-2023学年九年级上学期 期末测试化学试卷

人教版九年级化学上册期末测试卷考试范围:九年级上册1—7单元试卷总分:100分一、选择题(每小题3分,共45分)1、下列过程中发生了化学变化的是()A.光合作用B.酒精挥发C.摩擦生热D.湿衣晾干2、中国政府承诺“努力争取2060年前实现碳中和”,“碳中和”是使碳排放与碳吸收达平衡,实现二氧化碳相对“零排放”。

为了实现碳中和,从实际出发,以下措施不可行的是()A.鼓励拼车或乘坐公共交通出行B.推广垃圾分类处理,加强资源回收利用C.禁止使用煤、石油等化石能源D.采用物理或化学方法,捕集或吸收废气中的二氧化碳3、下图是表示气体分子的模型图,图中“●”和“O“分别表示两种不同质子数的原子,其中表示混合物的是()A. B. C. D.D4、下列对原子结构的说法错误的是()A. 原子都是由原子核和核外电子构成B. 原子的最外层电子数不超过C. 原子核中质子和中子都带正电D. 原子中核电荷数等于电子数5、下列关于物质结构和性质的说法不正确的是()A.生铁和刚性能不同主要是由于含碳量不同B.CO和CO2化学性质不同是由于构成它们的分子不同C.金刚石和石墨性质不同是由于构成它们的碳原子不同D.金属钠和铝的性质不同是由于钠和铝的原子结构不同6、水蒸发为水蒸气后所占体积变大,这一事实说明()A.水分子间的间隔变大B.水分子的体积变大C.水分子的数目增多D.水分子的质量增加7、“人用西药”如硫酸新霉素,其化学式为C23H18N6O17S,下列关于硫酸新霉素的说法正确的是( )A、硫酸新霉素中含65个原子B、硫酸新霉素中氢、硫元素的质量比为18:1C、硫酸新霉素中氢元素的质量分数最小D、硫酸新霉素的相对分子质量为682g8、下列化学用语表示不正确的是()A.两个水分子:2H2O B.2个镁离子:2Mg2+C.硫酸根离子:SO42﹣D.氧化铁:FeO9、下列实验基本操作中,正确的是()10、下列关于燃烧和灭火的说法,错误的是( )A.可燃物只要与氧气接触就能燃烧B.家用电器着火时,应先切断电源C.将木柴架空燃烧,是为了使木柴与空气充分接触D.扑灭森林火灾时,可设置隔离带将树木与燃烧区隔离11、化学物质在生产、生活中有着广泛的应用.下列说法正确的是()A.使用有机合成材料不会对环境造成影响B.农业上为了提高粮食产量,应大量使用化肥、农药C.湖水经沉淀、过滤、吸附等净化处理后,即可得到纯水D.汽车使用压缩天然气(CNG)作燃料,会减少对环境的污染12、对比是学习化学的重要方法。

2023-2024学年广东省广州市天河区九年级上学期期末考试化学试卷

2023-2024学年广东省广州市天河区九年级上学期期末考试化学试卷

2023-2024学年广东省广州市天河区九年级上学期期末考试化学试卷1.广式萝卜糕是粤菜的灵魂担当,下列制作萝卜糕的主要过程中,涉及化学变化的是A.清洗萝卜B.萝卜切丝C.混合入模D.开火蒸熟2.学生实验考查时,以下同学的实验操作正确的是A.滴管取用溶液B.检查气密性C.氢气验纯D.量取9.5mL3.城市因水而灵动,广州因珠江而秀美。

下列关于水的说法错误的是A.水的硬度较大时可用过滤的方法降低B.水中有异味时可加入活性炭除味水的硬度D.自来水通过蒸馏可以变成纯净水C.水质浑浊时可加入明矾使悬浮杂质沉降除去4.锶(Sr)常用于制造合金、光电管、照明灯,其化学性质活泼,在氧气中燃烧生成氧化锶。

结合图中信息判断,下列叙述中正确的是A.Sr元素属于非金属元素B.氧原子的质子数是16D.氧化锶的化学式为SrO C.Sr原子的质量主要由构成其原子核的质子和核外电子的质量决定5.下列关于数字“2”的意义说法正确的是A.H 2 O 2表示含有氢分子和氧分子B.表示1个碳酸根离子带2个单位的负电荷C.2Cu表示2个铜元素D.表示氯化钙中,钙元素的化合价为2+6.对实验现象的观察和描述是一种基本的化学素养。

下列有关实验现象描述不正确的是A.铁放置在潮湿的空气中:生成红棕色固体氧化铁B.向硝酸银溶液中伸入铜片:铜片表面有银白色固体析出,溶液由无色逐渐变为蓝色C.电解水:产生大量气泡,正极与负极产生气体的体积比约为1:2D.红磷在空气中燃烧:产生大量白烟7.《本草纲目》记载:“三七近时始出,南人军中,用为金疮要药,云有奇功”。

三七中止血的活性成分主要是田七氨酸(C5H8N2O5)。

下列说法正确的是A.田七氨酸的相对分子质量为186gB.田七氨酸分子是由碳原子、氢原子、氮分子和氧原子构成C.田七氨酸中碳、氢、氮、氧四种元素的质量比为5:8:2:5D.田七氨酸中氢元素的质量分数最小8.推理和归纳是化学学习常用的思维方法。

下列推理正确的是A.铝的相对原子质量比镁大,所以等质量的两种金属中镁含的原子个数多B.原子核一般由质子和中子构成,则所有原子一定具有质子和中子C.金刚石和石墨都是由碳原子构成,所以石墨转化为金刚石是物理变化D.向紫色石蕊溶液中通入CO 2,溶液变红,说明CO 2与石蕊反应9.某同学设计了如图所示的装置测定空气中氧气的含量。

2022-2023学年九年级化学第一学期期末考试题(含答案)

2022-2023学年九年级化学第一学期期末考试题(含答案)

2022-2023学年九年级化学第一学期期末考试题(含答案)考号姓名成绩________满分100分,考试时间90分钟。

可能用到的相对原子质量:H-1 C-12 O-16 Cl—35.5 Na—23一、选择题(本题包括20小题,每小题2分,共40分。

每小题只有一个....选项符合题意)。

1.“垃圾分类工作就是新时尚”。废旧报纸应投入的垃圾箱是()2.下列典故中,主要体现化学变化的是()A. 火烧赤壁B. 刻舟求剑C. 司马光砸缸D. 铁杵磨成针3.下列实验操作中,正确的是()A.检查气密性 B.稀释浓硫酸 C.读取液体体积D.点燃酒精灯4.下列关于空气的说法正确的是()A.舍勒第一次明确提出空气中有氧气和氮气B.按质量计算,空气中氮气约占78%C.空气中的氮气可用于食品防腐D.空气中PM2.5含量高说明空气质量好5.一些食物的pH范围如下,其中呈碱性的是()A.豆浆(7.4~7.9 )B.牛奶(6.3~6.6)C.番茄汁(4.0~4.4)D.柠檬汁(2.0~3.0)6.下列关于酸碱盐的用途不合理的是()A.用盐酸除铁锈B.用氢氧化钠改良酸性土壤C.用硫酸铜溶液与石灰乳混合配制农药波尔多液D.用小苏打治疗胃酸过多7.下列关于氧气说法正确的是()A.氧气能做火箭的助推剂,氧气具有可燃性;B.硫在氧气中燃烧产生淡蓝色火焰C.通常情况下,氧气液态和气态都是无色的D.铁丝在空气中不能燃烧,在纯氧气中剧烈燃烧,火星四射,生成黑色固体8.医院给病人输氧时用到类似如图所示的装置.关于该装置,下列说法不正确的是()A.输氧时,a导管连接供给氧气的钢瓶B.输氧时,a导管连接病人吸氧气的塑料管C.使用该装置可观察是否有氧气输出D.使用该装置可观察氧气输出的速率9.科研人员成功研制出一种纳米纤维催化剂,可将二氧化碳转化成液体燃料甲醇,其微观示意图如图所示,下列说法正确的是 ( )A .甲是单质,乙、丙、丁均为氧化物B .生成物丙由1个碳原子、4个氢原子和1个氧原子构成C .参加反应的甲和乙的分子个数比为3:1D .生成物丙中碳、氢和氧元素的质量比为1:4:110.元素周期表是学习和研究化学的重要工具,如图是元素周期表的一部分,其中X 、Y 、Z 代表三种不同的元素,下列说法中正确的是 ( )A.原子序数X>YB.核外电子数X=YC.Y 和Z 处于同一周期D.X 和Y 的电子层数相同11.下列家庭调味品与水充分混合后不能形成溶液的是 ( ) A.白醋 B.食盐 C.花生油 D.白砂糖12.连花清瘟胶囊源自传统中医名方,可用于治疗流感,现代仪器测得其成分之一是没食子酸(化学式为C 7H 6O 5)。

2022-2023学年广东省华师附中实验学校九年级化学第一学期期末达标检测试题含解析

2022-2023学年广东省华师附中实验学校九年级化学第一学期期末达标检测试题含解析

2022-2023学年九上化学期末模拟试卷注意事项:1.答题前,考生先将自己的姓名、准考证号填写清楚,将条形码准确粘贴在考生信息条形码粘贴区。

2.选择题必须使用2B铅笔填涂;非选择题必须使用0.5毫米黑色字迹的签字笔书写,字体工整、笔迹清楚。

3.请按照题号顺序在各题目的答题区域内作答,超出答题区域书写的答案无效;在草稿纸、试题卷上答题无效。

4.保持卡面清洁,不要折叠,不要弄破、弄皱,不准使用涂改液、修正带、刮纸刀。

一、单选题(本题包括12个小题,每小题3分,共36分.每小题只有一个选项符合题意)1.下列归纳和总结完全正确的是A.A B.B C.C D.D2.将金属M的粉末放入盛有硝酸铜溶液的烧杯中,充分反应后,溶液呈无色,继续向烧杯中加入一定量的硝酸银溶液,充分反应后过滤,得到滤渣和蓝色滤液。

根据上述实验分析,下列说法错误的是( )A.金属活动性强弱顺序:M>Cu>AgB.滤渣中可能有金属MC.滤液中至少含有两种溶质D.滤渣中一定有Ag3.下列物质的使用能够达到目的的是A.用明矾对水进行杀菌消毒B.用碱液清洗水垢C.用生石灰和水作为“自热米饭”的热源D.用活性炭将硬水软化4.工业上常用高温煅烧石灰石的方法来制得生石灰,发生的反应为CaCO3高温CaO+CO2↑.现取一定量的石灰石样品进行煅烧(假设杂质质量不变)。

某变量y随时间的变化趋势如图所示,则纵坐标表示的是()A.生成CO2的体积B.生成CaO的质量C.固体中杂质的质量分数D.固体中氧元素的质量5.为了安全,在加油站、纺织厂和矿井内等场地,都标有“严禁烟火”字样或图标。

下列图标与燃烧和爆炸无关的是()A. B.C.D.6.保护水资源、节约用水是我们义不容辞的责任。

下列做法不利于节约用水的是A.水龙头坏了立即进行修理B.用水不断地冲洗汽车C.沐浴擦香皂时暂时关上喷头D.洗衣后的水用来冲洗卫生间7.下列物质属于纯净物的是A.山泉水B.洁净的空气C.石油D.二氧化锰8.如图所示,下列实验方案设计不能达到实验目的是()A.图1探究溶液浓度对反应速率的影响B.图2探究可燃物燃烧的条件C.图3探究温度对品红扩散速率的影响D.图4比较二氧化碳含量的多少9.下列各组物质的溶液,不用其他试剂,无法将其一一区别的是()A.HCl、Ba(NO3)2、KCl、Na2CO3B.H2SO4、NaOH、Ba(OH)2、CuSO4C.BaCl2、Na2SO4、K2CO3、NaNO3D.HCl、H2SO4、BaCl2、K2CO310.人体吸入的O2有2%转化为活性氧,它加速人体衰老,被称为“夺命杀手”。

人教版2022--2023学年度第一学期九年级化学上册期末测试卷及答案

人教版2022--2023学年度第一学期九年级化学上册期末测试卷及答案
(5)操作1的名称是________,该操作中所需的玻璃仪器有烧杯、________、玻璃棒。
(6)操作2是吸附。主要除去液体C中一些异味和色素,可选用的物质是________。
(7)判断净化水是硬水还是软水,可加入________鉴别;将净化水煮沸,则加热煮沸除了杀菌消毒之外,还起到的作用是_________;欲使海水转化为淡水,则可采取的方法是________。家用水壶内产生的水垢(主要成分为CaCO3),常用________除去。
⑥与血红蛋白结合的有毒气体________;
(2)厨房味精可以增加膳食的美味。其主要成分为“谷氨酸钠”(化学式是C5H8NO4Na),另外还含有少量NaCl(其他成分不考虑)。则味精属于________(填“混合物”或“纯净物”),味精中至少含有_________种元素(填数字)。
(3)请用化学用语填空:
11.高铁是中国一张靓丽的名片,车厢内禁止吸烟须张贴的标志是()
A. B. C. D.
12.下列叙述正确的是()
A.原子是不可再分的最小粒子
B.同种元素的粒子,不一定具有相同的质子数
C.混合物中不可能只含有一种元素
D.元素的化学性质跟原子的最外层数关系非常密切
13.北京大学生命科学学院蒋争凡教授研究组发现,锰离子是细胞内天然免疫激活剂和警报素。在元素周期表中锰元素的某些信息如图所示,下列有关锰的说法不正确的是()
(3)向A中加入了少量某种固体,然后加入过量稀盐酸,立即发生剧烈反应并产生大量气泡,固体迅速消失,产生的气体通入石蕊试液,试液变为红色,则该固体物质可能是下列物质中的(填字母)。
A.镁粉B.碳酸钙粉末C.块状石灰石
(4)用装置C制取氧气,反应的化学式表达式为________;用D装置收集氧气,观察到_________现象停止收集,并将集气瓶在_______(填“水槽外”或“水槽内”)盖上玻璃片,________(填“正放”或“倒放”)实验台上。

广东省广州市越秀区广东实验中学2023-2024学年九年级上学期11月期中英语试题

广东省广州市越秀区广东实验中学2023-2024学年九年级上学期11月期中英语试题

广东实验中学2023-2024学年第一学期九年级英语本试卷共8页,四大题,满分90分。

考试时间100分钟。

注意事项:1.答题前,考生务必在答题卡上用黑色字迹的钢笔或签字笔填写自己的考生号、姓名。

2.选择题每小题选出答案后,用2B铅笔把答题卡上对应题目的答案标号涂黑。

如需改动,用橡皮擦干净后,再选涂其它答案标号;答案不能写在试卷上。

3.非选择题答案必须用黑色字迹的钢笔或签字笔写在答题卡各题目指定区域内的相应位置上;如需改动,先划掉原来的答案,然后再写上新的答案,改动后的答案也不能超出指定的区域;不准使用铅笔、圆珠笔和涂改液。

不按以上要求作答的答案无效。

4.考生必须保持答题卡的整洁,考试结束时,将本试卷和答题卡一并交回。

一、语法选择(共15小题;每小题1分,满分15分)阅读下面短文,按照句子结构的语法性和上下文连贯的要求,从1~15各题所给的A、B、C和D项中选出最佳选项,并在答题卡上将该项涂黑。

“Why did she tell everyone about it?” I thought ___1___. I’ll always remember that day, when I was so ___2___ by all the strange looks everyone was giving me. And I ___3___ believe I would lose the friendship of ___4___ person I trusted the most.Five years back, Sally was the new kid in class. She was ___5___ than any other person I knew. We started as classmates but only after ___6___ months. We were like best friends. So, I never expected her ___7___ me in such a big way.I don’t know ___8___ made Sally tell about my personal life. It was like someone had stabbed(刺伤)me in the back. After she gave away my secrets, everyone at school started laughing at me whenever I ___9___ by. After this terrible situation, I changed schools. Sally called me many times, but I didn’t answer. My heart ___10___ and it was hard for me to trust ___11___.I tried hard to heal from the scars she left on my heart. After five years, my life went back to the way it was. ___12___ one day, I met Anna who was one of my ___13___ from Grade 3. She told me that Sally wasn’t the one who brought my secrets ___14___ light. Mary was. Mary was___15___ school’s big mouth.I was all at sea(不知所措). I wished I could have asked Sally about this and fix my mistakes. From that, I learned that we should trust those we love because one little mistake could really damage our lives.1. A. regret B. regretful C. regretfully D. regretless2. A. surprised B. surprising C. surprise D. surprises3. A. can’t B. couldn’t C. mustn’t D. shouldn’t4. A. a B. an C. the D. /5. A. friendly B. more friendlyC. most friendlyD. the most friendly6. A. a few B. a little C. few D. little7. A. hurt B. hurts C. hurting D. to hurt8. A. that B. why C. when D. what9. A. pass B. passes C. passed D. will pass10. A. broken B. was breaking C. was broken D. were broken11. A. other B. others C. the other D. another12. A. but B. if C. because D. so13. A. classmate B. classmates C. class D. classes14. A. for B. at C. to D. by15. A. we B. our C. ours D. us二、完形填空(共10小题;每小题1分,满分10分)阅读下面短文,掌握其大意,然后从16~25各题所给的A、B、C和D项中选出最佳选项,并在答题卡上将该项涂黑。

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广州市越秀区2010学年第一学期九年级化学期末考试试题可能用到的相对原子质量: H 1 C 12 O 16 N 14 一、选择题(本题包括20小题,每小题2分,共40分) 1. 空气中体积分数最大的物质是A. 氮气 B . 氧气 C. 稀有气体 D. 二氧化碳2. 地壳中含量最多的元素是A. 铝 B . 铁 C. 氧 D. 硅 3. 沙子的主要成分是S iO 2。

此物质中硅元素(Si)的化合价为A .+4 B.+3 C .+2 D .+1 4. 下列说法,正确的是5. 从环境保护的角度考虑,下列燃料最理想的是A. 氢气 B. 天然气 C. 酒精 D. 汽油 6. H2O 2中,氧元素的质量分数约为A . 5.9% B. 11.1% C. 89.9% D. 94.1% 7. 硫粉在空气中燃烧时,会产生的现象是A.火星四射 B.有刺激性气味 C.发出蓝紫色火焰 D .有黑色固体生成8. 某物质在空气中燃烧时,有二氧化碳、水和二氧化硫生成。

则此物质肯定含有的元素是A.碳、氢、氧 B .氧、氢、硫 C.碳、氧、硫 D.碳、氢、硫9. 加压后,25m 3的天然气可以装入0.024m 3的钢瓶中。

这可以说明A.分子由原子构成B.分子之间有间隔 C.分子在不断地运动 D.分子的大小可以改变 10. Cl O2是常用的消毒剂。

仅.根据其化学式......,不能..得出的结论是 A.此物质属于氧化物 B.此物质通常呈气态C.此物质由两种元素组成 D .此物质的每一个分子中都含有3个原子 11. 下列灭火方法与隔绝氧气无关..的是 A .用灯帽盖灭酒精灯 B.油锅着火时用锅盖盖灭C.森林大火时设置一条隔离带 D .贵重设备失火时用二氧化碳灭火器灭火 12. 下列说法正确的是氧气可用于食品保鲜氧气可用于医疗麻醉氧气极易溶于水氧气的化学性质比氮气A B C DA. 干冰可用于人工降雨B. 煤炉上放一壶水可以防止CO中毒C.铅笔芯的主要成分是金属铅 D. 只能用红磷来测定空气中氧气的含量13.下列图示实验操作中,正确的是14. 莽草酸是抗H1N1流感病毒药品的主要原料。

它的下列性质中,属于化学性质的是A.易溶于水 B.通常是白色粉末状C.熔点为185℃-191℃D.能与活泼金属、酸性高锰酸钾溶液反应15. 仅仅根据..获得的信息是.....Na2CO3 +2HCl == 2NaCl+ CO2↑+ H2O,不能....化学方程式A. 反应进行得非常快B.生成的CO2是气态的C. 反应在常温下可以进行D. 反应物是Na2CO3和HCl16. 下列有关催化剂的说法,正确的是A.能改变化学反应速率B. 在化学反应后其质量减小C.在化学反应后其质量增加 D. 在化学反应后其化学性质发生了变化17.某纯净物能发生分解反应,这说明A.此物质是高锰酸钾B.此物质属于化合物C.此物质含有多种分子 D.此物质由两种元素组成18. 为防止实验室意外事故的发生,下列预处理方法中错误..的是选项须预防的意外预处理方法A打翻酒精灯导致酒精在桌面燃烧准备好湿抹布B 在导管口点燃氢气时发生爆炸让老师来点火C 排水集气时水倒流入反应容器先将导管移出水面D 铁丝在氧气中燃烧时炸裂瓶底预先在集气瓶里放少量水或细沙19.下图所示的实验组合,最终想证明的是A.稀醋酸能使石蕊变红B.二氧化碳和水都不能使石蕊变红C.CO2与H2O反应的生成物是H2CO3 D.二氧化碳与水会反应,且生成物能使石蕊变红20. 实验1和实验2用于研究可燃物的燃烧条件。

下列判断正确的是A.实验1中红磷没有燃烧,说明红磷的着火点比白磷的高B.实验1中水下的白磷没有燃烧,说明热水的温度比铜片的低C.实验2中如果停止通入氧气,白磷仍会继续燃烧D.实验2中白磷燃烧,说明实验2中的热水温度高于实验1二、本题包括5小题,共30分21.(4分)(1)用化学用语填空:四氧化三铁,由5个氮原子组成的1个氮分子。

(2)下列化学用语书写有误,请在横线上写出正确结果。

①镁离子:Mg+2;②氧化铝:AlO。

22.(5分)以下是钠元素、氯元素在元素周期表中的信息图和3种粒子的结构示意图。

请回答下列问题:(1)氯元素的相对原子质量是;氯原子的核电荷数是。

(2)钠原子核外共有个电子层;Na+的结构示意图是(填字母)。

(3)在钠和氯气生成氯化钠的反应中,得到电子的是(填名称)原子。

23.(6分)四种物质A、B、C和D的微观示意图见下表。

物质 A B C D ——氢原子——氧原子——硫原子微观示意图图例说明(1)1个A分子中含有个原子。

(2)这四种物质中,属于单质的有(填表中字母)。

(3)物质D中氢、氧元素的质量比为(结果用最简整数比表示)。

(4)常温下A和B反应生成C和D。

请用化学方程式表示此反应(各物质均用化学式表示):高温高压。

24. (9分)碳元素的变化与我们的生活密切相关。

(1)下列碳单质的结构图示中,表示石墨的是 (填编号)。

(2)煤燃烧时上方会出现蓝色火焰(如右图)是CO 燃烧产生的。

请用化学方程式表示此反应:;若在煤火上洒些氧化铜,会有铜生成。

请用化学方程式表示此反应: 。

(3)二氧化碳是一种宝贵的碳氧资源,以下是固定二氧化碳的成功范例:CO 2+2N H3 ======= CO(NH 2)2 + X 。

此反应中物质X 的化学式为 ; 若上述反应中,有44gCO 2参加反应,则有 g NH 3参加了反应。

(4)现代文明追求“低碳生活”——指耗能尽量少,从而使碳特别是二氧化碳的排放量得以减低的生活。

请举出一项“低碳生活”的具体行为:。

25.(6分)下图是与水有关的3个实验。

请回答下列问题:(1)A中烧瓶里的水只发生了______变化(填“物理”或“化学”)。

(2)B中试管1内气体的化学式为________;B中反应的化学方程式为 。

(3)“直饮水”的主要生产流程为:自来水→活性炭→超滤膜→紫外线→直饮水,其中超滤膜可以让水分子通过,其它大分子污染物则被截留。

从原理上说,此流程中超滤膜的作用与实验C中的等材料是相同的。

(4)广州亚运会开幕式向世人展示了水与广州城的历史渊源。

身在广州的你,对于水的组成、结构、性质或变化还有什么疑问吗?请写出一个。

三、本题包括4小题,共30分。

26.(4分)请填写下列空白。

(1)把密度较大的块状药品放入玻璃容器时,应先将容器,放入药品后再将容器慢慢地起来,以免打破容器。

(2)从细口瓶倒出液体药品后,要立即,并把瓶子放回原处。

(3)试管洗净的标准是试管内壁的水。

27.(12分)实验室部分仪器或装置下图所示,请回答下列问题:(1)写出指定仪器或装置的名称:A,C________________。

(2)要制取和收集二氧化碳,可选择图中的(填编号),常用药品是_______________ (填化学式)。

这套装置还可用于制气体(填化学式),此时要用到的药品是_______________ (填化学式)。

(3)若用氯酸钾制取氧气,你认为还需增加的仪器是____(填仪器名称),用排空气法收集氧气时,验满的操作是:。

(4)请写出一种鉴别氧气和二氧化碳气体的方法:。

(5)氯气是一种有毒的气体,可溶于水,密度比空气大,与空气的成分不反应。

则可用上图装置(填编号)收集氯气。

为免氯气污染环境,改用右图所示装置收集。

请将集气瓶内的...完整..(图中“→”表示气流的方.....导管画向)。

28.(10分)城市排污管道中常会聚集有毒气体而引发伤人事故。

某学习小组想知道城市排污管道气的成分是什么。

他们通过查阅资料得知:I.城市排污管道中可能含有较大量的CO、CO2、H2S、CH4等气体。

Ⅱ.H2S气体有剧毒,能与CuSO4溶液反应生成黑色沉淀。

Ⅲ.CO2会被NaOH溶液吸收;CH4、CO均不与CuSO4溶液、石灰水以及NaOH溶液反应。

该小组设计了下图所示的装置并进行探究(夹持仪器已省略)。

请回答下列问题:(1)装置A中出现黑色浑浊,说明排污管道气中含有(填化学式)。

(2)装置B中出现白色浑浊,说明排污管道气中含有(填化学式)。

此反应的化学方程式为。

(3)装置D中可见火焰,干燥的烧杯内壁有水雾出现,说明排污管道气中含有(填化学式)。

此反应的化学方程式为。

若要验证该气体燃烧后的另一种产物,可进行的操作是:迅速把烧杯倒过来,向烧杯内注入,振荡。

(4)有同学提出,测出燃烧产物中水和二氧化碳的质量,计算;若<,则原样品气中含有CO,否则原样品气中就不含CO。

请按其思路,用最简整数比.....填空。

29.(4分) 某同学想通过实验判断家用的自来水是硬水还是软水。

请填写下表中的空格,帮助其完成实验报告。

实验操作现象结论原样品是硬水原样品是软水)()(22COmOHm点燃△2010学年第一学期学业水平调研测试九年级化学参考答案一、选择题(本题包括20小题,每小题2分,共40分)二、本题包括5小题,共30分。

21.(4分)Fe 3O 4,N5 ; Mg 2+ , Al 2O 3 22.(5分)(1) 35.45; 17 (2) 3; C (3) 氯 23.(6分) (1) 3 (2) B 、C (3) 1:8(4) 2H 2S + O 2 === 2S ↓+ 2H2O24. (9分) (1) B(2) 2CO+ O 2 === 2CO 2 ; C uO + C O === Cu + CO 2 (3) H2O ; 34(4) 以步行、骑车或坐公交车代替开私家车上班(或其它合理答案)25.(6分)通电点燃(1) 物理(2) H2 ;2H 2O ==== 2H 2↑+O 2↑ (3) 小卵石、石英砂(4) 水受热会分解吗?(或其它合理答案)三、本题包括4小题,共30分。

26.(4分) (1) 横放,竖立 (2) 盖紧瓶塞(3) 既不聚成水滴,也不成股流下27.(12分)(1) 铁架台 ,长颈漏斗(2) ABEG 或ABC DG ,C aCO 3、H Cl 。

O2, H 2O 2、MnO 2(3) 酒精灯 ,将带火星的木条置于集气瓶口 (4) 将燃着的木条与两气体接触 (5) G ,(作图结果如右图所示)28.(10分) (1) H 2S(2) C O2 , CO2 + C a(OH )2 == CaCO 3↓+ H 2O(3) CH 4 , CH 4 + 2O 2 ===== C O2 + 2H2O , 澄清石灰水 (4) 9:1129.(4分)实验操作 现象结论 取样后,加入少量肥皂水,振荡 可观察到有浮渣 原样品是硬水 只观察到有较多泡沫原样品是软水。

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