2014届福建省宁德市蕉城区九年级上学期期中考试化学试卷

适用年级:初三
试卷号:306901

试卷类型:期中
试卷考试时间:2013/12/23

1.单选题(共6题)

1.
下列生活中的变化,属于物理变化的是
A.米饭变馊B.用糯米酿酒C.湿衣服晾干D.铁锅生锈
2.
下列反应中既为化合反应又为氧化反应的是(    )
A.水氢气+氧气B.镁+氧气氧化镁
C.水+二氧化碳→碳酸D.酒精+氧气水+二氧化碳
3.
氮肥厂利用氮气和氢气在有铁存在的情况下合成氨。在此过程中铁的质量和化学性质都没有改变,则铁在合成氨过程中充当
A.反应物B.生成物C.催化剂D.消毒剂
4.
下列是四位同学分别对甲烷化学式“CH4”所表示意义的回答,其中错误的是
A. 表示甲烷这种物质
B. 表示一个甲烷分子由四个氢元素和一个碳元素构成
C. 表示一个甲烷分子
D. 表示甲烷由碳元素和氢元素组成
5.
下列生活中的行为,有利于改善空气质量的是
A.燃放烟花爆竹B.禁止露天焚烧秸秆
C.在居室内吸烟D.工厂任意排放废气
6.
某1L纯牛奶的包装盒上面有如下一些数据(每100g内):脂肪≥3.3g、蛋白质≥2.9g、非脂乳固体≥8.1g、钾≥145mg、钙≥115mg.这里的钾、钙是指(  )
A.分子B.原子C.单质D.元素

2.选择题(共9题)

7.

阅读理解

    Doing well in high school prepares students for life in college and beyond, so achieving student success is important. High school students learn valuable information from class lectures and homework, and by asking for help when it is needed. Being prepared for tests and engaging in school activities can help a student to achieve success in high school.

    Complete any homework you are assigned on time. Then, if you need help understanding a concept you will have plenty of time to get help.

    Create a study area in your home. This can be a quiet bench outside or a seating area in your room. If you like to listen to music while studying, listen to classical or relaxing music. Be sure to have plenty of lighting in the area to read your textbook or notes.

    Keep a schedule. If you have extra-curricular activities like sports or school meetings, make sure to schedule your homework and study time around them. Keeping a schedule will allow you to get better grades while they are having fun in high school.

    Eat breakfast. Having breakfast each morning before school will give you energy and brain function to pay better attention in class. Eat snacks during study sessions to keep alert and focused on your work.

    Create a study group to help fellow high school students and get help if you need it. Studying with others will help reinforce concepts and information, and if you need help there will always be someone there to help you before you get behind in your studies.

    Set up after-school hours with your teacher if you need extra tutoring. Visiting a teacher for one-on-one time before a test will help you nail down those last few concepts you need help with.

8.In the rice-growing world, Yuan Longping is a leading f{#blank#}1{#/blank#}.
9.In the rice-growing world, Yuan Longping is a leading f{#blank#}1{#/blank#}.
10.

假如你是李华,现任你们学校的学生会主席。你将代表学生会起草一份倡议书,号召全校同学行动起来,为环保运动做出自己的努力。同时下周六学校将组织同学在全市进行环保宣传活动,征召志愿者到校学生会报名。

注意:(1)短文应该包括以上所提供的主要信息,可适当发挥;(2)词数:120左右;(3)倡议书格式以提供,不计入总词数;(4)参考词汇:征召(新人) recruit。25 October, 2016

Dear brothers and sisters,

   

Yours sincerely,

Li Hua

Students' Union

11.

阅读理解

    A popular saying goes, “Sticks and stones may break my bones, but words will never hurt me.” However, that's not really true. Words have the power to build us up or tear us down. It doesn't matter if the words come from someone else or ourselves — the positive and negative effects are just as lasting.

    We all talk to ourselves sometimes. We're usually too embarrassed to admit it, though. In fact, we really shouldn't be because more and more experts believe talking to ourselves out loud is a healthy habit.

    This “self-talk” helps us motivate ourselves, remember things, solve problems, and calm ourselves down. Be aware, though, that as much as 77% of self-talk tends to be negative. So in order to stay positive, we should only speak words of encouragement to ourselves. We should also be quick to give ourselves a pat on the back. The next time you finish a project, do well in a test, or finally clean your room, join me in saying “Good job!”

    Often, words come out of our mouths without us thinking about the effect they will have. But we should be aware that our words cause certain responses in others. For example, when returning an item to a store, we might use warm, friendly language during the exchange. And the clerk will probably respond in a similar manner. Or harsh (刻薄的) and critical language will most likely cause the clerk to be defensive.

    Words possess power because of their lasting effects. Many of us regret something we once said. And we remember unkind words said to us! Before speaking, we should always ask ourselves: Is it true? Is it loving? Is it needed? If what we want to say doesn't pass this test, then it's better left unsaid.

    Words possess power: both positive and negative. Those around us receive encouragement when we speak positively. We can offer hope, build self-esteem (自尊) and motivate others to do their best. Negative words destroy all those things. Will we use our words to hurt or to heal? The choice is ours.

12.

阅读理解

    IPhone owners are vainer(虚荣)and spend more on clothes and grooming(仪容)than those who have BlackBerrys and Android phones, new research claims.BlackBerry owners earn the most and are more likely to have long-term relationships, while people with Android handsets are most creative and the best cooks.

    The study, carried out by TalkTalk Mobile, surveyed 2,000 owners of the three major smartphone brands to determine whether the choice of handset was an extension(延伸) of their personality. The study rated users in various walks of life using a point scoring system including personalities, daily habits and the type of industries they work in.

    Other results from the study found that people with an iPhone are more image conscious and generally consider themselves more attractive than those with other handsets. They are most likely to describe themselves as adventurous, bright and are most likely to work in media, publishing and education. They also believe their boss rates them highly. Apple owners also tend to have done more travelling and are the most active on social media sites.

    BlackBerry owners were found to be the least punctual(准时的), but despite putting in the least hours at work they are the most active phone user—sending more texts and making more calls in the average day than any other phone user. They are more social and have more friends overall. They also earn nearly two and a half thousand pounds a year more than other smartphone owners, with an average salary of $27,406. BlackBerry users classed themselves so loud and mainly work in the health, finance or property sectors. They were also found to drink more tea and coffee each day than any other phone user.

    Android owners were found to watch more TV than others and drink the most alcohol—consuming more in an average week than iPhone and BlackBerry drinkers. They have the most jobs in engineering, the government and public services and environmental services. They have the best manners and are more shy and relaxed than their counterparts.

    Dan Meader, Director of Mobile at TalkTalk, said,“Many of us have our mobile phones on us almost constantly so they do become an extension of us in many ways. It's interesting to see then how the choice in handset may reflect different aspects of personality and the results do show some unusual difference

13.

阅读理解

    IPhone owners are vainer(虚荣)and spend more on clothes and grooming(仪容)than those who have BlackBerrys and Android phones, new research claims.BlackBerry owners earn the most and are more likely to have long-term relationships, while people with Android handsets are most creative and the best cooks.

    The study, carried out by TalkTalk Mobile, surveyed 2,000 owners of the three major smartphone brands to determine whether the choice of handset was an extension(延伸) of their personality. The study rated users in various walks of life using a point scoring system including personalities, daily habits and the type of industries they work in.

    Other results from the study found that people with an iPhone are more image conscious and generally consider themselves more attractive than those with other handsets. They are most likely to describe themselves as adventurous, bright and are most likely to work in media, publishing and education. They also believe their boss rates them highly. Apple owners also tend to have done more travelling and are the most active on social media sites.

    BlackBerry owners were found to be the least punctual(准时的), but despite putting in the least hours at work they are the most active phone user—sending more texts and making more calls in the average day than any other phone user. They are more social and have more friends overall. They also earn nearly two and a half thousand pounds a year more than other smartphone owners, with an average salary of $27,406. BlackBerry users classed themselves so loud and mainly work in the health, finance or property sectors. They were also found to drink more tea and coffee each day than any other phone user.

    Android owners were found to watch more TV than others and drink the most alcohol—consuming more in an average week than iPhone and BlackBerry drinkers. They have the most jobs in engineering, the government and public services and environmental services. They have the best manners and are more shy and relaxed than their counterparts.

    Dan Meader, Director of Mobile at TalkTalk, said,“Many of us have our mobile phones on us almost constantly so they do become an extension of us in many ways. It's interesting to see then how the choice in handset may reflect different aspects of personality and the results do show some unusual difference

14.

阅读理解

    IPhone owners are vainer(虚荣)and spend more on clothes and grooming(仪容)than those who have BlackBerrys and Android phones, new research claims.BlackBerry owners earn the most and are more likely to have long-term relationships, while people with Android handsets are most creative and the best cooks.

    The study, carried out by TalkTalk Mobile, surveyed 2,000 owners of the three major smartphone brands to determine whether the choice of handset was an extension(延伸) of their personality. The study rated users in various walks of life using a point scoring system including personalities, daily habits and the type of industries they work in.

    Other results from the study found that people with an iPhone are more image conscious and generally consider themselves more attractive than those with other handsets. They are most likely to describe themselves as adventurous, bright and are most likely to work in media, publishing and education. They also believe their boss rates them highly. Apple owners also tend to have done more travelling and are the most active on social media sites.

    BlackBerry owners were found to be the least punctual(准时的), but despite putting in the least hours at work they are the most active phone user—sending more texts and making more calls in the average day than any other phone user. They are more social and have more friends overall. They also earn nearly two and a half thousand pounds a year more than other smartphone owners, with an average salary of $27,406. BlackBerry users classed themselves so loud and mainly work in the health, finance or property sectors. They were also found to drink more tea and coffee each day than any other phone user.

    Android owners were found to watch more TV than others and drink the most alcohol—consuming more in an average week than iPhone and BlackBerry drinkers. They have the most jobs in engineering, the government and public services and environmental services. They have the best manners and are more shy and relaxed than their counterparts.

    Dan Meader, Director of Mobile at TalkTalk, said,“Many of us have our mobile phones on us almost constantly so they do become an extension of us in many ways. It's interesting to see then how the choice in handset may reflect different aspects of personality and the results do show some unusual difference

15.假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文。文中共有10处错误,每句中最多有两处。错误涉及一个单词的增加,删除或修改。
增加:在缺词处加一个漏字符号(∧),并在其下面写出该加的词。
删除:把多余的词用(\)划掉。
修改:在错的词下划一横线,并在该词下面写出修改后的词。
注意:1、每处错误及其修改仅限一词;2、只允许修改10处,多者(从第11处起)不计分。
Dear editor,
    I'm sorry to occupy your precious time, and I really want to tell you anything about the problem of some people keeping too many pets nowadays. I take the problem more and more seriously for following reasons.
    First of all, as it is known to people, pets make so much noise that trouble residents a lot. What's more, it is widely accepted that animal waste pollutes the environment, where makes people quite uncomfortable. Many owners like taking their pets to public place where they may frighten children or even bite people. The mostly important is that pets can spread some diseases and this has attracted much attention.
    Take all these factors into consideration, I sincerely hope that I can get help from you and expect the media do something for this.
Yours truly'
Wang Lin

3.填空题(共4题)

16.
Ⅰ.用化学式填空
氮气   过氧化氢
氧化铝 氯化钙
Ⅱ.如图各个容器中,所盛物质属于混合物的是 (填序号,下同),属于单质的有 ,属于氧化物的有

Ⅲ.用化学用语表示
(1)2个铜原子 ;(2)氧化镁中镁元素的化合价为+2价
17.
下面是钠元素和氯元素在元素周期表中的信息和3种粒子的结构示意图.请回答下列问题:

(1)氯原子的核电荷数是  ;钠原子与氯原子的最本质区别是     
(2)在钠和氯气生成氯化钠的反应中,得到电子的是   原子;Na+的结构示意图是 (填字母)。
(3)表示同一种元素的粒子是    (填字母)。
18.
(1)科学家研究确认,一些油炸食品含有致癌物质丙烯酰胺(C3H5ON)。
①丙烯酰胺由   种元素组成,1个丙烯酰胺分子由 个原子构成;
②丙烯酰胺中碳、氢元素的质量比为    
③丙烯酰胺中氮元素的质量分数为(计算结果精确到0.1%)    
(2)如图为某药品的说明书.如果小孩每日食物中铁元素过多,含量超过200mg则不利于身体的发育.有个小孩一天吞食了8片此药,问:

(1)8片此药中铁元素的质量是多少?   (2)请你判断铁元素是否过量。
19.
小明同学去郊游,用瓶子装了一些山下的溪水带回实验室,在老师的指导下,按下列流程对水进行净化。

请回答下列问题:
(1)取水后加入明矾的作用是   
(2)取回水样,静置后过滤.在实验室里,过滤需要用到的玻璃仪器有 、漏斗和玻璃棒,其中玻璃棒的作用是  
(3)向滤液中加入活性炭,利用其 性,除去水样中的色素和异味。
(4)净化后得到的清水是纯净水吗? ,为什么

4.实验题(共1题)

20.
某校化学兴趣小组的同学利用下列装置进行实验。

实验目的:
一.用高锰酸钾制取一瓶氧气,做细铁丝燃烧的实验。
二.粗略测定加热2g高锰酸钾所收集到的氧气体积。
反应原理:(用化学式表达式表示)
高锰酸钾制氧气:  
细铁丝在氧气中燃烧:
装置连接:
写出标数字的仪器名称:①     ,②
为达到实验二的目的,各装置的正确连接顺序是:(填接口的字母)a→      →d。
问题分析:
(1)实验过程发现B瓶中的水变红了,原因是:     。
(2)用收集到的氧气做细铁丝燃烧的实验时,发现瓶底炸裂,发生失误的操作可能是:   
(3)在本实验中,收集氧气的时机是加热后马上收集,若是在气体连续不断产生之后才开始收集,则测得的氧气的体积会比实际值 (填“偏大”或“偏小”或“不变”)。
(4)实验结束时,乙同学发现收集到的氧气大于理论产量,针对这一现象,同学们进行了如下探究:
【提出猜想】
猜想I:反应生成的二氧化锰分解放出氧气;
猜想Ⅱ:反应生成的锰酸钾分解放出氧气。
【实验验证】同学们分为两组,分别进行以下实验:
①第一组同学取一定质量的二氧化锰装入试管,在250℃条件下加热一段时间,冷却后测得二氧化锰的质量不变.则猜想 错误。
②第二组同学取锰酸钾装入试管,在250℃条件下加热,没有用测定质量的方法得出了猜想Ⅱ正确的结论.该组同学选择的实验方法是
试卷分析
  • 【1】题量占比

    单选题:(6道)

    选择题:(9道)

    填空题:(4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:0

    5星难题:0

    6星难题:5

    7星难题:0

    8星难题:0

    9星难题:6