第一篇:高一化学寒假作业本(附答案)
高一化学寒假作业本(附答案)
1、从粗盐中提取纯净的氯化钠晶体的步骤为
2、配制一定物质的量浓度溶液的操作步骤为
3、设NA代表阿佛加德罗常数,下列说法正确的是 A.标准状况下0.1 NA个水分子所占的体积约是2.24L B.11.2L CO2中含有11 NA个电子
C.NH3的摩尔质量等于NA个氨分子的质量之和 D.101k Pa、4℃时18mL水和202k Pa、27℃时32g O2所含分子数均为1NA 4.下列说法不正确的是 A.磷酸的摩尔质量与6.02×1023个磷酸分子的质量在数值上相等 B.6.02×1023个氮分子和6.02×l023个氢分子的质量比等于14:1 C.32g氧气所含的原子数目为2×6.02×1023。D.常温常压下,0.5×6.02×1023个一氧化碳分子所占体积是11.2L 5.用NA表示阿伏加德罗常数,下列叙述中正确的是 A.0.1mol L-1稀硫酸100mL中含有硫酸根个数为0 1NA 点击下载:
高一化学寒假作业本(附答案).doc 高中是人生中的关键阶段,大家一定要好好把握高中,编辑老师为大家整理的高一化学寒假作业本,希望大家喜欢。
2016学年寒假假期百分百高一化学答案 2016高一化学寒假作业Word版含答案
第二篇:新课标寒假作业本答案
一.听说:(第1-2节是听力测试,第3-5节是口语测试)第一节:听小对话,选择正确图片.(5分)()1.What does the woman want to drink?
()2.Where are they talking?
()3.What pet does Peter have?
()4.How does Emma go to school?
()5.Which is the right picture?
笔试部分(75分)二.单项选择.(15分)()1.--Could you please sweep the floor?--_______.I have to do my homework.A.Yes, sure.B.Why not? C.Sorry, you can’t.D.Sorry, I can’t()2.--Jim, come out.Let's go to play football.--Sorry.I'm _______ a math problem.A.working out B.working on C.working for D.working with()3.Nancy, thanks for _________ care of my goldfish.A.take B.takes C.taking D.took()4.--Could I please ________________?--Sorry, you can’t.Your father has to use it.A.do chores B.go to the movies C.use the car D.go to school()5.--Would you like to come to my party?--I’d love to, ___________I’m too busy.A.and B.if C.so D.but()6.My mother often ___ my little sister ____ of the house and plays with her in the garden.A.take...out B.takes...out C.takes...to D.take…to()7.I _________ doing the dishes because it's boring.A.hates B.hate C.like D.likes()8.Could I ________ ten yuan from you? I will give it to you next week.A.borrow B.give C.send D.help()9.I often help my mother dinner.A.did B.do C.make D.makes()10.I could ________ my bed and ________ my clothes.A.make;fold B.make;do C.fold;do D.fold;wash()11.Could you please the window? It’s very cold.A.to open B.not to open C.opening D.not open()12.Mr Smith didn’t have money ,but he had good friends.A.much;much B.many;many C.much;many D.many;much()13.I ___________ my aunt in Australia this winter vacation.A.visit B.am going to visit C.visited D.was going to visit()14.When you can’t find the way, you may the police help.A.ask, for B.ask, to C.tell, with D.told, for()15.Please put the food in the fridge(冰箱), it may go bad.A.and B.for C.or D.so 三.完型填空.(10分)
Bill Gates ____1___on October 28, 1955.He grew up in Seattle, Washington.He was a very _____2___ boy.His favorite subjects at school were science and math.___3___ he was 13 years old, Bill started to play with computers.At that time, computers ___4___very large machines.Once he was very interested ___5____ a very old computer.He and some of his friends ___6___lots of time doing unusual things with it.In the end, they worked out(开发)a software program(软件程)with the old machine.Bill ___7___it for $ 4200 when he was only 17.In 1973, Bill ____8___Harvard University.In his third year, he left Harvard to work for a company(公司)called Microsoft.Bill began his company in 1975 ___9__his friend Paul Allen.They thought the computer would come into every office and every home soon.So they began developing the software for personal computers: They improved the software to ___10__ it easier for people to use computers.()1.A.is born B.was born C.did born D.born()2.A.talented B.lucky C.loving D.shy()3.A.At B.Until C.When D.At the moment()4.A.is B.are C.was D.were()5.A.at B.in C.on D.for()6.A.took B.put C.paid D.spent()7.A.sell B.sale C.sold D.bought()8.A.went B.went to C.want D.wanted()9.A.and B.with C.for D.by()10.A.take B.begin C.make D.start 四.阅读理解:(20分)
A
Betty is an American school girl.She is very happy because her parents will take her to China for a visit.They are going to fly from New York on June 30 and get to Beijing on July 1.They will stay at Lido Holiday Inn.Their Chinese friends will show them around Beijing.They are going to visit the Palace Museum, the Summer Palace, the Temple of Heaven and the Great Wall.They will also visit some Chinese homes and try some Chinese food.They will spend a week in Beijing and then go to Xi’an, Guilin and some other places for sightseeing.The whole trip will take three weeks and she is sure she will have a great time in China.()1.Betty is very happy because she will _______ with her parents.A.visit China B.go home C.watch TV()2.Their _______ friends will show them around Beijing.A.Australian B.Chinese C.American()3.From the text we can know that they will _______ in Beijing.A.cook Chinese food B.Learn to speak Chinese C.try some Chinese food()4.After they visit Beijing , they will go to ___________.A.Xi’an and Guilin B.The Summer Palace C.Shanghai()5.How long will the whole trip take?
A.one week B.two weeks C.three weeks B There is one language,people,young and old,men and women,use it very often,in every country in the world.It is everyone’s second language.You can’t hear it but it is very easy to understand.It is sign(手势)language.
When you wave(招手)to a friend in the street,you are using sign language.When you put up your hand in class,you are saying“Please ask me,l think l know the right answer” When a police officer wants to stop cars or buses.he puts up his hand.He’s using sign language.Churchill’s(丘吉尔)famous“V for Victory(胜利)”is also sign language. Sign language is useful(有用的)in quiet places or places full of noise.Even when you are swimming with your friends,you can have a talk under water.()6.__________ in the world use sign language. A.Many people B.Police officer
C.All people D.Students and teachers()7.You can’t hear sign language because it’s ____________ language. A.a difficult B.not a C.an easy D.not a spoken()8.When you put up your hand in class,you mean ___________. A.you can answer the question B.you want to ask a question C.you can use sign language D.both A and B()9.In a noisy(吵闹的)place the best way to talk is to ___________.
A.speak louder B.use sign language
C.speak in a low voice(小声)D.stop noise()10.Which of the following is TRUE? _________.
A.To nod one’s head(点头)isn’t sign language B.Only Churchill used“V for Victory” C.Teachers don’t know sign language D.People often use sign language 五.词汇运用:(10分)
1.Can I use your CD player? ______________(我的)is at home.2.He has to take _____________(照顾)of his little sister.3.My brother often _______________(忘记)to make his bed
4.Mrs Black always________________(带)her dog for a walk after supper.5.Could you please buy some _____________(小吃,快餐)for me? 6.I ______________(憎恨)thieves.7.What is your father doing? He’s having a ________________(会议).8.Yesterday Mary______________(邀请)me to her birthday party.9.I like to ______(洗)the dishes.10..________(青少年)need to help their parents with housework.六.任务型阅读(5分)
下面有六段电视节目内容的解说词。请把其中的五段,填入相应的节目名称。A.People might grow plants and vegetables in the sea in about 50 years.B.A child in Hainan fell from the seventh floor but luckily he was not hurt at all.C.The lost world is an exciting American film.People, especially school students, may like it better.D.Even if you could buy the world, you could not buy a happy family, good friends or knowledge.E.For families with children, an important problem is getting the children away from the television to do their homework.F.When you need help for your homework, go to the library.You may find magazines, newspapers, and big dictionaries there.They can always help you.(1)-------Money Isn’t Everything
(2)-------Activities For Free Time
(3)-------Study Tools
(4)-------Farms of the Future
(5)-------Parents’ Headache 七.书面表达(15分):
这个周末你与父母去海滨度假,你的宠物小狗需要好友Ted帮忙照顾。请用下面的提示词给Ted写份留言。
take care of , take for a walk, feed and give some water, play with him, clean
第三篇:上学期高一化学寒假作业本(2018—2018)
上学期高一化学寒假作业本(2018—2018)
化学与人类进步和社会发展的关系非常密切,它的成就是社会文明的重要标志。查字典化学网为大家推荐了上学期高一化学寒假作业本,请大家仔细阅读,希望你喜欢。
用到的相对原子质量:H : 1 O : 16 Al:27 S:32
(每个小题只有一个答案符合要求,请选出,每小题2分,共50分)
1.下列不属于空气污染物的是()
A.二氧化硫 B.氮的氧化物 C.粉尘 D.二氧化碳
2.、下列物质的分离方法不正确的是
A 用过滤的方法除去食盐水中的泥沙 B 用分液法分离酒精和水
C 用四氯化碳萃取碘水中的碘 D用蒸馏的方法将自来水制成蒸馏水
3.常温下,能用铁制容器盛放的液体是()
A.稀盐酸 B.稀硝酸 C.FeCl3溶液 D.浓H2SO4
4.下列物质中,不属于合金的是()
A.硬铝 B.水银 C.黄铜 D.钢铁
5..赏心悦目的雕花玻璃是用下列物质中的一种对玻璃进行刻蚀而制成的,这种物质是()
A.氢氟酸 B.烧碱 C.盐酸 D.硫酸
6.当光束通过下列分散系:①有尘埃的空气 ②稀硫酸 ③蒸馏水 ④氢氧化铁胶体,能观察到有丁达尔现象的是()
A.①②B.②③ C.①④ D.②④
7.下列情况会对人体健康造成较大危害的是()
A 自来水中加入少量漂白粉进行消毒杀菌 B 用SO2漂白食品
C 用食醋清洗热水瓶胆内壁附着的水垢 D 用小苏打发酵面团作馒头
8.下列说法或做法正确的是()
A CO2通入可溶性硅酸盐中析出硅酸沉淀,所以硅酸的酸性小于碳酸
B 金属钠着火燃烧时,用二氧化碳灭火
C 氯气与二氧化硫混合使用漂白效果更好 D 酸雨的PH小于7
9.钠与水反应的现象和钠的下列性质无关的是()
A.钠的熔点较低 B.钠的密度小于水
C.钠的硬度较小D.钠的还原性强
10.纯碱和小苏打都是白色晶体,在日常生活中都可以找到。若要在家中将它们区分开来,下面的方法中可行的是()
A.分别放在炒锅中加热,观察是否有残留固物
B.分别用干净铁丝蘸取样品在煤气炉的火焰上灼烧,观察火焰颜色
C.观察样品的颜色
D.在水杯中各盛相同质量的样品,分别加入等体积的白醋,观察反应的剧烈程度
11.﹒铜粉加入稀盐酸中,加热无现象,这时加入一种盐则铜粉溶解而溶液变蓝,同时有气体放出,这种盐是()
A﹒NaCl B﹒FeCl2 C﹒KNO3D﹒Fe2(SO4)3
小编为大家提供的上学期高一化学寒假作业本,大家仔细阅读了吗?最后祝同学们学习进步。
第四篇:七年级寒假作业本答案(数学)
七年级寒假作业本答案(数学)
我们已给本学期划上一个圆满的句号,又迎来了丰富多彩的寒假生活。查字典数学网初中频道为大家提供了七年级寒假作业本答案,供大家参考。
一、1、B
2、B
3、(1)(3)4、3
5、(1)x-62(2)a+b0
二、1、x3
2、x1.5
3、x-8/3 4、2x-4
5、C
6、C
7、(1)x6 数轴表示略(2)x-2 数轴表示略
8、(1)x2 数轴表示略(2)x-2.5 数轴表示略 9、23 数轴表示略
10、x3/11
三、操作探究(1)当x=2时,y=15,当x=-2时,y=3(2)-17/8-1.5(3)x-17/8
1、x1/2
2、(1)4000元(2)5种:①甲6,乙9;②甲7乙8;③甲8乙7;④甲9乙8;⑤甲10乙5(3)a=300,甲6乙9更有利
四、1、x280 2、137/18137/19 3、4.5km 操作探究(1)CB(2)RPQ 创新舞台 当mn时,不答应;当m=n时,无所谓;当m
五、1、B
2、D
3、(1)a+ab(2)x+y(3)1(4)ac
4、(1)36a4^4b(注:4^4即4的4次方,以后不解释)(2)x(x-9)
5、(1)5x-10y/2x-40(2)x-20/130x+24
6、(1)1/3x=4y/12xy,5/12xy=5x/12xy(2)y/x(x-y)=y-xy/x(y-x)x/(y-x)=x/x(y-x)创新舞台-7,-7
六、1、-1 2、3
3、x 4-6 DAC
7、(1)2/xz(2)10/3a(a+2)操作探究 略
七、1、(1)x=0(3)x=0(第2问呢--)2、1/7 3、34
4、(1)③(2)不正确 应保留分母(3)-2x-6/(x+1)(x-1)创新舞台 原式=x+4 ∵(-根号3)=(根号3),正确
八、1、m-6 2、5元 感悟体验 略
九、1、y=50/x
2、略 3、2/3
4、m1/2
5、D
6、B
7、(1)y=-18/x(2)x=-6 创新舞台 略
十、1-3 AAD
4、(1)S=100000/d(2)200m(3)6666.67m
十一、1、二 四
2、C
3、长10m 宽6m 创新展台(1)30min(2)无效
十二、1、C
2、D
3、(1)1:10000000(2)1:10000000(3)单位换算
4、(1)1/2,1/4,1/2(2)AC,DB,CD,AB
5、(1)5/2(2)5/2
6、(1)8(2)略(提示:DB/AB=2/5,EC/AC=2/5 DB/AB=EC/AC)创新舞台 32cm(不清楚2cm和0.5cm算不算,这题不同人不同理解,多写应该也没事--)
十三、基础展现(1)盲区(2)不能。盲区(3)AB范围内(4)略 感悟体验 7.6m 操作探究 略
十四、1-3 CCD 4、2:1 1:2 5、12 6、1
7、(1)135 根号8(2)相似,理由略 操作探究 略
十五、1-3 CBC
4、ACP=ABC 5、2/5
6、(1)DE=AD,BE=AE=CE(2)△ADE∽△AEC(3)2 创新舞台 略
十六、1、A
2、D
3、图1 灯光 中心投影;图2 阳光平行投影 4、6.40m 操作探(1)1.25(2)1.5625(3)y=d/4(4)0.4m
十七、全部作图说理类题,略
十八、1、(1)(2)(3)
2、B
3、A
4、略 操作探究(1)提示:做PQ平行AC(2)不成立(3)PAC=APB+PBD
十九、1、C
2、C
3、=
4、不合理
5、不行
6、(1)正确(2)正确 操作探究(1)180(2)相等 三角形的外角等于不相邻两个内角和 三角形三个内角和为180创新舞台 e d f
二十、1、C
2、CD
3、略(提示:连接AD)操作探究平行 理由略 创新舞台 略(如:已知(1)、(2)、(4),求证(3))
二十一、1、B
2、C
3、不相同
4、不等 不中奖概率大
5、(1)摸到任意一个数字 相等(2)不等(3)相等 操作探究 落在红色或绿色或黄色区域内 不等
二十二、1、(1)相等(2)不等 抽出王(3)相等 操作探究 问题一 不正确 红球 p(红)=2/3,p(白)=1/3,∵p(红)p(白)摸出红球可能性大 问题2 拿出一个红球 感悟体验 ①略 ②当ab牛奶杯中的豆浆多 当a=b牛奶杯中的豆浆和豆浆杯中的牛奶一样多 当a
二十三、1、A 2、5/8 3、6/25
4、(1)1/4(2)略(感觉提议不太清晰,我写2/5)5、7/8 1/8 操作探究(1)略(2)1/6
以上就是查字典数学网为大家提供的七年级寒假作业本答案,大家仔细阅读了吗?加油哦!
第五篇:六上寒假作业本答案
篇一:六年级寒假作业答案
六年级寒假作业答案——《寒假新时空》数学答案(持续更新)
2012-01-17 09:34:18| 分类: 易学简算|举报|字号 订阅
2月7日晨修改,感谢部分同学指正!
p4-5 在框里填上适当的数
3/2
3/2 15/2;14/9 14/9 4/9 5/3
5/3 5/6 涂色
37.5% 37.5% 按规律填空
0.5
3/7,37.5%规律是:分子是3,分母后一个比前一个增加1 6/5,60%1.3 规律是:奇数位上减去0.1,偶数位上增加0.1 40%,1.4, 33/20 190% 规律是:后一项比前一项增加0.25 求面积1、10x12-3.14x(10/2)平方=41.5(平方厘米)2、4x6/2+3.14x(4/2)平方/2=18.28(平方厘米)
解决问题
1、(1/3
x 3/4-1/5)/ 3/10= 1/6
2、(1)(14+16)/(14+16+7+3+4+5+1)x 100%=60%(2)(14+16+7+3+4+5)/(14+16+7+3+4+5+1)x 100% =98% 1-1 /(14+16+7+3+4+5+1)x 100%=98 %(3)略
p10-11 直接写出答案:3/2 2/3 2/9 8/9 7/4 4/7 3/7 5y1/3 13/15 3/2 5/3 4/15 看图计算:略
填空:
1、100,402、1:33、270
4、1,3,2, 1/4, 3/2 选择
a, b , a, b, b, b 动脑筋,1、3,28 ; 6,14; 21,4; 12,7 ; 42,2 4,21; 7,12, 2,42; 1,84
2、略
p16-17 1 > ,=,< 2 ac 31又2/3 >1.66>116.7% 34% > 40.75=3/4=75% 0.575=23/40=57.5% 0.333 0.34=17/50=34% 5 6 540x 44/44+45+46 =176(棵)
540x 45/44+45+46 =180(棵)540x 46/44+45+46 = 0.5=50%(3)(16/2)平方/2=100.48(平方厘米)
3.14x+ 6x6/2=32.13(平方分米)
p22-23 113, 1 ,48 20.75 75% 七成五
5/8 62.5% 3/5 60%、填>、<或=,< ,,、选择
;b;c、比较大小 >
1/3、填表、略、解决问题(1)按比例分配 :=184(棵)(2)309 / 618
3.14 x(6/2)平方/2、简便计算 1/24、填空 3/4
0.625 四种:
192=1/2(384)=1/3(576)273=1/2(546)=1/3(819)327=1/2(654)=1/3(981)219=1/2(438)=1/3(657)
3、填>、<或= <,>, >;< ,> =
4、列式计算
[3.09-
37/12 /(1.15+1/12)] x 10% 解:设乙数为x,那么甲数为4/7x x-4/7x=21 x=49
12000x3.14%x3+12000=13130.4(元)1200x(1联系本站-站长统计 篇四:六上寒假作业答案
第一页:
一、诠释 庄稼 陶瓷 由衷 陌生 亲吻
三、不耻下问 手不释卷 孜孜不倦 博闻强识
阅读:
答案:
1、以开玩笑的态度回答。/ 造就。/ 心情难以平静。
2、(1)其形声义俱全,信息量远远大于拼音文字。汉字又整齐又灵动,特别是适宜于表达一种微妙的、诗意的情感。
(2)古典诗词已经规定了、铸就了中国人的心理结构。
3、因为汉字其形声义俱全,信息量大,适宜表达微妙、诗意的情感,联结着久远的文化底蕴,由汉字写成的古典诗词甚至铸就了中国人的心理结构。而且使用汉字的人数众多,占全世界人口的四分之一,因此,汉字是“不应该也不可能废除”。
4、因为中国人自小受着中华古典文化的熏陶,心中有对祖国的深深热爱之情,所以中国人的凝聚力会那么强。
第三页:
韧劲 哺乳 羡慕 慷慨
寂静
团锦簇 万紫千红 顾名思义 司空见惯
老班长许诺不投他得票请每人一个雪糕
让老师最头疼的人当班长
书呆子被
选为文艺委员
班干部。
蠢决定而伤心(3)【1】伤了王威的心
第6页:
酸枣 衰老 艰苦卓绝
过滤 辜负 嬉戏
笑脸
温文尔雅
一、歼灭
玻璃
二、伟大 简陋
三、直截了当 花
四、3 5 2 4 6 1 阅读答案: 1(1)(2)【1】有人选【2】默不作声的2繁重 居然 3(1)没人想当(2)为自己的愚
一、恬静
餐馆
二、活泼
慷慨
四、张开了美丽的像一盏盏小灯笼。