introductionPPT课件
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chap1Introduction-PPT课件
Introduction
Computer Talents Computer Science and Technology The Course About Computing Essentials
Computer Talents
1． 2． 3． 4． general people computer user application programmer systems developer
8,13, 24,36
Computer
Figure 1-3
Same program, different data
Figure 1-4
Same data, di. von Neumann Model
Computer
is based on the von Neumann
Chapter
4: Operations on Bits
Chapter 1
Introduction
Chapter 1: Introduction
1.1. The Computer as a Black Box 1.2. von Neumann Model 1.3. Computer Hardware 1.4. Data 1.5. Computer Software 1.6. History 1.7. Keyterms 1.8. Summary
About Teaching Plan
Chap1~Chap15 Four
Lectures 80%
Practice 20%
（教室楼机房 205、206、305、306）
About References
1 ． Computer science –An overview, Sixth Edition, J.Gleen Brookshear, 人民邮电出版社， 影印, 2019.1 2．Computing Essentials， Timothy J. O’Leary (高等教育出版社影印), 2000.7 3．计算科学导论，赵致琢，科学出版社, 2000.8 4．计算机导论，王玉龙，电子工业出版社， 2019.8 5. 计算机导论双语课程网站（学校主页/教学资源）
Computer Talents Computer Science and Technology The Course About Computing Essentials
Computer Talents
1． 2． 3． 4． general people computer user application programmer systems developer
8,13, 24,36
Computer
Figure 1-3
Same program, different data
Figure 1-4
Same data, di. von Neumann Model
Computer
is based on the von Neumann
Chapter
4: Operations on Bits
Chapter 1
Introduction
Chapter 1: Introduction
1.1. The Computer as a Black Box 1.2. von Neumann Model 1.3. Computer Hardware 1.4. Data 1.5. Computer Software 1.6. History 1.7. Keyterms 1.8. Summary
About Teaching Plan
Chap1~Chap15 Four
Lectures 80%
Practice 20%
（教室楼机房 205、206、305、306）
About References
1 ． Computer science –An overview, Sixth Edition, J.Gleen Brookshear, 人民邮电出版社， 影印, 2019.1 2．Computing Essentials， Timothy J. O’Leary (高等教育出版社影印), 2000.7 3．计算科学导论，赵致琢，科学出版社, 2000.8 4．计算机导论，王玉龙，电子工业出版社， 2019.8 5. 计算机导论双语课程网站（学校主页/教学资源）
介绍韩国的英文ppt课件
It shares land borders with China, Russia, and North Korea
Neighbors
Korea has a rich history that dates back to the Neolithic period The first recorded mention of Korea is in Chinese chronicles from the 1st century AD
Introducing English PPT courseware for South Korea
Introduction to KoreaKorean cultureKorean educationSouth Korean economyKorean tourism
contents
目录
01
Introduction to Korea
The shipbuilding industry in South Korea has experienced ups and downs but remains an importantБайду номын сангаасpart of the country's economy
Shipbuilding industry
Vision 2025
Modern history
Population
South Korea has a population of approximately 51 million people, with the majority concentrated in the cities, specifically Seoul, the capital and largest city
Neighbors
Korea has a rich history that dates back to the Neolithic period The first recorded mention of Korea is in Chinese chronicles from the 1st century AD
Introducing English PPT courseware for South Korea
Introduction to KoreaKorean cultureKorean educationSouth Korean economyKorean tourism
contents
目录
01
Introduction to Korea
The shipbuilding industry in South Korea has experienced ups and downs but remains an importantБайду номын сангаасpart of the country's economy
Shipbuilding industry
Vision 2025
Modern history
Population
South Korea has a population of approximately 51 million people, with the majority concentrated in the cities, specifically Seoul, the capital and largest city
概述Briefintroductionppt课件
CN盐 a2SO效4 应0为.04主mol / L时，CNa2SO4 ，SPbSO4
2020/1/17
3. 酸效应(Solubility and pH)
溶液酸度对沉淀溶解度的影响称为～
讨论： 酸度对强酸型沉淀物的溶解度影响不
大， 但对弱酸型或多元酸型沉淀物的溶解
度影响较大 pH↓，[H+]↑，S↑
注： 因为酸度变化，构晶离子会与溶液中的H+或
OH-反应，降低了构晶离子的浓度，使沉淀溶解 平衡移向溶解，从而使沉淀溶解度增大
2020/1/17
图示 溶液酸度对CaC2O4溶解度的影响
CaC2O4
C2O42- + H+ HC2O4-+H+
Ca2+ + C2O42-
HC2O4H2C2O4
2020/1/17
1
C 2O42
[C2O42
]'
[C2O42
C2O42
]
[C2O42
] C2O42
S'
K
' SP
[Ca 2
][C2O42
]'
[Ca2 ][C2O42 ]
C2O42
K SP
C2O42
K SP
C 2O42
S'2
2020/1/17
Ba2与SO42等量反应的BaSO4沉淀溶解度为 S K SP 1.11010 1.0105 mol / L
200ml溶液中BaSO4沉淀的溶解损失为 1.0105 233.4 200 0.5mg 0.2mg
2020/1/17
2020/1/17
3. 酸效应(Solubility and pH)
溶液酸度对沉淀溶解度的影响称为～
讨论： 酸度对强酸型沉淀物的溶解度影响不
大， 但对弱酸型或多元酸型沉淀物的溶解
度影响较大 pH↓，[H+]↑，S↑
注： 因为酸度变化，构晶离子会与溶液中的H+或
OH-反应，降低了构晶离子的浓度，使沉淀溶解 平衡移向溶解，从而使沉淀溶解度增大
2020/1/17
图示 溶液酸度对CaC2O4溶解度的影响
CaC2O4
C2O42- + H+ HC2O4-+H+
Ca2+ + C2O42-
HC2O4H2C2O4
2020/1/17
1
C 2O42
[C2O42
]'
[C2O42
C2O42
]
[C2O42
] C2O42
S'
K
' SP
[Ca 2
][C2O42
]'
[Ca2 ][C2O42 ]
C2O42
K SP
C2O42
K SP
C 2O42
S'2
2020/1/17
Ba2与SO42等量反应的BaSO4沉淀溶解度为 S K SP 1.11010 1.0105 mol / L
200ml溶液中BaSO4沉淀的溶解损失为 1.0105 233.4 200 0.5mg 0.2mg
2020/1/17
2019年秋外研版高中英语必修一课件：M4 Introduction(共18张PPT)
live in
in the south… of…
in the suburb/ countryside
apartment
on the…floor of…
five-storey/five storeys
apartment block
…miles away from… be made of
local
stone
house on the water
tile-roofed house (瓦房)
Read about the homes of the two students. Do the match according to
the description.
P31 2
Now try to describe the homes of
Homework
Preview the new words and expressions on Page 32&33.
Useful patterns： I live in the city/ countryside of… I live with… We live… on the… floor of a… building. It is made of… about… miles away from…
Work in pairs and compare your homes.
thWehtiwchoosntuediesnmtsowreitshimthielahr etolpyoofurs? key words.
in the south of China live with… suburb a small apartment a five-storey apartment block
学术英语写作Unit 6.Introduction(课堂PPT)
6
Sample Analysis
Introduction
1.Polylactide (PLA) has received much attention in recent years due to its biodegradable properties, which offer important economic benefits. 2.PLA is a polymer obtained from corn and is produced by the polymerization of lactide. 3.It has many possible uses in the biomedical field1 and has also been investigated as potential engineering material.2,3 4.However, it has been found to be too weak under impact to be used commercially.4
5.One way to toughen polymers is to incorporate a layer of rubber particles5 and there has been extensive research regarding the rubber modification of PLA. 6.For example, Penney et al. showed that PLA composites could be prepared using blending techniques6 and more recently, Hillier established the toughness of such composites.7
Sample Analysis
Introduction
1.Polylactide (PLA) has received much attention in recent years due to its biodegradable properties, which offer important economic benefits. 2.PLA is a polymer obtained from corn and is produced by the polymerization of lactide. 3.It has many possible uses in the biomedical field1 and has also been investigated as potential engineering material.2,3 4.However, it has been found to be too weak under impact to be used commercially.4
5.One way to toughen polymers is to incorporate a layer of rubber particles5 and there has been extensive research regarding the rubber modification of PLA. 6.For example, Penney et al. showed that PLA composites could be prepared using blending techniques6 and more recently, Hillier established the toughness of such composites.7
《大学数学解析几何》PPT课件
➢笛卡尔的《几何》虽然不像现在的解析几何那样，给读者展现 出一个从建立坐标系和方程到研究方程的循序过程，但是他通过 具体的实例，确定表达了他的新思想和新方法．这种思想和方法 尽管在形式上没有现在的解析几何那样完整，但是在本质上它却 是地道的解析几何．
➢笛卡尔的解析几何有两个基本思想： （１）用有序数对表示点的坐标； （２）把互相关联的两个未知数的代数方程，看成平面上的一 条曲线。
Back
四、学习要求
１、课前预习. ２、课上认真听讲，积极思考，记好笔记. ３、课后及时复习，独立认真地完成作业. ４、课外适当阅读课外参考书，拓宽知识面，加深对课本内 容的理解.
Back
五、考核方式及成绩评定
考核方式：闭卷考试 总评成绩＝平时成绩×30%
+期末考试成绩70%
《解析几何》
－Chapter 1
Back
3．解析几何创立的意义
➢ 笛卡尔和费马创立解析几何，在数学史上具有划时代的意义。
➢解析几何沟通了数学内数与形、代数与几何等最基本对象之间 的联系，从此，代数与几何这两门学科互相吸取营养而得到迅速 发展，并结合产生出许多新的学科，近代数学便很快发展起来了。
➢恩格斯高度评价了笛卡尔的革新思想。他说：“数学中的转折 点是笛卡儿的变数。有了变数，运动进入了数学；有了变数，辩 证法进入了数学；有了变数，微分和积分也就立刻成为必要的 了。”
关于解析几何产生的历史，可以查阅数学史方面的 书，例 如李文林的《数学史概论》（高等教育出版社），或 上网查阅 查关的内容，网址：
/2/22/07/0641.htm
Back
二、本课程的主要内容及基本要求
本课程在中学平面向量和平面解析几何的基础上，进一步 学习空间向量和空间解析几何。主要内容有：
➢笛卡尔的解析几何有两个基本思想： （１）用有序数对表示点的坐标； （２）把互相关联的两个未知数的代数方程，看成平面上的一 条曲线。
Back
四、学习要求
１、课前预习. ２、课上认真听讲，积极思考，记好笔记. ３、课后及时复习，独立认真地完成作业. ４、课外适当阅读课外参考书，拓宽知识面，加深对课本内 容的理解.
Back
五、考核方式及成绩评定
考核方式：闭卷考试 总评成绩＝平时成绩×30%
+期末考试成绩70%
《解析几何》
－Chapter 1
Back
3．解析几何创立的意义
➢ 笛卡尔和费马创立解析几何，在数学史上具有划时代的意义。
➢解析几何沟通了数学内数与形、代数与几何等最基本对象之间 的联系，从此，代数与几何这两门学科互相吸取营养而得到迅速 发展，并结合产生出许多新的学科，近代数学便很快发展起来了。
➢恩格斯高度评价了笛卡尔的革新思想。他说：“数学中的转折 点是笛卡儿的变数。有了变数，运动进入了数学；有了变数，辩 证法进入了数学；有了变数，微分和积分也就立刻成为必要的 了。”
关于解析几何产生的历史，可以查阅数学史方面的 书，例 如李文林的《数学史概论》（高等教育出版社），或 上网查阅 查关的内容，网址：
/2/22/07/0641.htm
Back
二、本课程的主要内容及基本要求
本课程在中学平面向量和平面解析几何的基础上，进一步 学习空间向量和空间解析几何。主要内容有：
介绍冬奥会英语PPT课件
• China and the Winter Olympics
• Future prospects for the Winter Olympics
Introduction to the Winter 01 Olympics
Origin and Development
Origin
The Winter Olympics originated from the 1924 Winter Olympics in Chamonix, France Since then, the Winter Olympics have been held every four years to promote winter sports and cultural exchange among countries
The Winter Olympics was held in Lake Placid, USA
The Winter Olympics was held in Square Valley, USA
02
01
2018
The Winter Olympics was held in PyeongChang, South Korea
In recent years, China has become one of the most competitive counties in the Winter Olympics, ranking among the top medium winning counties
Vision and preparation for China to host the Winter Olympics
China has expressed its willingness to host the Winter Olympics, and has been actively preparing for it
• Future prospects for the Winter Olympics
Introduction to the Winter 01 Olympics
Origin and Development
Origin
The Winter Olympics originated from the 1924 Winter Olympics in Chamonix, France Since then, the Winter Olympics have been held every four years to promote winter sports and cultural exchange among countries
The Winter Olympics was held in Lake Placid, USA
The Winter Olympics was held in Square Valley, USA
02
01
2018
The Winter Olympics was held in PyeongChang, South Korea
In recent years, China has become one of the most competitive counties in the Winter Olympics, ranking among the top medium winning counties
Vision and preparation for China to host the Winter Olympics
China has expressed its willingness to host the Winter Olympics, and has been actively preparing for it
英语自我介绍ppt课件
Joined a small startup as a product manager
Position
Held the position of a child executive officer
Serves as a vice present of operations
Currently employed as a director of marketing
03
Work experience
BIG DATA EMPOWERS TO CREATE A NEW
ERA
Work unit
Worked at ABC company as a marketing manager
Managed a team of five at XYZ organization
VS
Sports participation
I actively participate in local sports clubs and leaders, where I can hone my skills, improve my fitness level, and compete with peers This experience has helped me build team work skills and a sense of fair play
BIG DATA EMPOWERS TO CREATE A NEW
ERA
Favorite Sports
Favorite sports
I enjoy a variety of sports activities, including basketball, soccer, and hiding These sports are not only keep me physically healthy, but also provide me with opportunities to socialize and make new friends
人物介绍英语作文 PPT课件 图文
生平经历（尽量用复合句，倒装，非限制性定语从句等）
Not only Hou Yaowen is interested in science ,but also he has a gift for music. Zu Longtao ming , which makes a great contribution to China.
三、如何使文章连贯？(过渡词的使用) 1) 时间： soon, then, suddenly, meanwhile, before, after, earlier, in the morning, afterwards, later, immediately, next, the other day, nowadays, gradually… 2) 空间: above, below, up, down, under, near, far from, in front of, behind, beside, beyond, on the right/left, around, inside, outside, opposite to, next to, on top of, across... 3) 列举： for example, such as, first(ly), second(ly), finally, besides, apart form, for one thing…for another thing … 4) 比较: like, unlike, on the contrary, in contrast to, on the one hand…on the other hand, than, not so…as…, as…as…, while, similarly, the former, the latter, some…others, one…the other, compared with…
Not only Hou Yaowen is interested in science ,but also he has a gift for music. Zu Longtao ming , which makes a great contribution to China.
三、如何使文章连贯？(过渡词的使用) 1) 时间： soon, then, suddenly, meanwhile, before, after, earlier, in the morning, afterwards, later, immediately, next, the other day, nowadays, gradually… 2) 空间: above, below, up, down, under, near, far from, in front of, behind, beside, beyond, on the right/left, around, inside, outside, opposite to, next to, on top of, across... 3) 列举： for example, such as, first(ly), second(ly), finally, besides, apart form, for one thing…for another thing … 4) 比较: like, unlike, on the contrary, in contrast to, on the one hand…on the other hand, than, not so…as…, as…as…, while, similarly, the former, the latter, some…others, one…the other, compared with…
文体学五种文体ppt课件
Example
"I've tried it,and it don't work;it don't work,Tom.It ain't for me...The widder eats by a bell;she goes to bed by a bell;she gits up by a bell---everything's so awful reg'lar a body can't Declaration of Independence
Formal style
Definition:Formal style is used before a large audience such as formal lectures,inaugural address of president elect,scientific reports.
Example
"Where's Van Bummel,the shoolmaster? " "He went off to the war too,was the great militia
general,and is now in Congress." ——Rip Van Winkle
Casual style
Example
Thank you very much, Mr. Mayor. I appreciate your kind words of introduction. And we're delighted to be here today. My wife and I are privileged to have the opportunity once again to travel in China.
self-introductionPPT课件
趁年轻，珍惜人生。
Don’t miss any opportunities.
不要错过任何机会。
Don’t pass up/give up any good chances.
不要放弃任何好机会。
.
20
Self-introduction（20）
Life is short. Life is sweet. Life is precious.
I have a big heart.
我心胸宽广。
I hold no grudges.
我不会怀恨在心。
I always let bygones be bygones.
我总是既往不咎。
.
18
Self-introduction（18）
My motto is: Play hard, 我的座右铭是：尽情玩耍、
.
8
Self-introduction（8）
I want to see the world.
我想看看这个世界。
I want to see the unseen. 我想去看没看过的东西。
I want to do what’s never 我想做以前没做过的事。 been done before/the undone.
谢谢。
God bless you.
祝福大家！
Have a great day.
再见。
.
23
.
12
Self-introduction（12）
Second, I have a bad sense of direction.
第二，我方向感很差。
I often get lost.
我常常迷路。
When I’m with another 当我和另一个人在一起时，
介绍种类英文介绍ppt课件
VS
Negotiation English
This type of English is used during business negotiations and is focused on prospective language and effective communication It involves techniques for handling objects, closing deals, and achieving mutual agreement
Advanced Phrase
A group of words that functions as an advocate in a sense Example: "Too quickly"
Noun Phrase
A group of words that functions as a noun in a sense Example: "The quick brown fox"
Summary
This category focuses on the rules and structures of the English language, including sentence structure, tense, and part of speech
Description
Grammar skills are essential for effective communication in English They help learners construct coherent and graphically correct senses, enabling them to express ideas clearly and avoid common misses
秋外研版高中英语必修一课件：M1 Introduction(共26张PPT)
PE
5P.EWahnidchITof them are not academic
physics IT
(学术的) subjects? 6o.pWenhich are your favorite subjects?
Complete the sentences with the help of P1 2 the words in the box.
hope that one day we will be
amply rewarded. 就像一个专心致志进行探索的科 学家那样，我们必须抱有这样的 希望，终有一天，我们的努力会 取得丰硕的成果。
Homework
Read the passage and preview the new words and expressions on Page 2&3.
You may do like this: answers with your 1. I like _______ because _c_l_a_s_s_m_a_t_e_s_..
2. I think __W__h_a_t_’s__y_oiusrimoppoinritoannt because _a_b_o_u_t__t_h_e__s_u.bjects?
4 Maths Chinese
Aftern oon
5 Maths 6 Geography 7 Music
Maths PE
Politics
Art Chinese English English
English Chemistry
PE English
Chinese History
Chinese
IT
Discuss your
•9、要学生做的事，教职员躬亲共做；要学生学的知识，教职员躬亲共学；要学生守的规则，教职员躬亲共守。2021/9/82021/9/8Wednesday, September 08, 2021 •10、阅读一切好书如同和过去最杰出的人谈话。2021/9/82021/9/82021/9/89/8/2021 8:20:58 PM •11、只有让学生不把全部时间都用在学习上，而留下许多自由支配的时间，他才能顺利地学习……（这）是教育过程的逻辑。2021/9/82021/9/82021/9/8Sep-218-Sep-21 •12、要记住，你不仅是教课的教师，也是学生的教育者，生活的导师和道德的引路人。2021/9/82021/9/82021/9/8Wednesday, September 08, 2021
introduction_ppt
1
570
570
小明的生活細節 18:00 - 開了客廳的冷氣和燈， 18:30 然後玩電視遊戲機
小明的碳排放計算項目 18:00- 0.5小時客廳冷氣、燈、 18:30 電視遊戲機和電視
電視遊戲機需要同時使用電視啊 !!!
18:30 - 回房間開燈和冷氣做 19:30 功冷氣 19:30
沒有列明在手冊上的項目不用記錄！
2. 總結每天的碳排放，並由家長或老師簽名 確認 3. 參考手冊及網上的「低碳行動」，減少碳 排放 4. 填寫「碳排放總記錄表」，總結過去14天 的碳排放 5. 填寫14天實踐低碳行動的感想及體驗 (如有) 6. 將資料交給老師
小明的碳排放
時間 碳排放活動
均衡飲食
15. 每餐吃不多於一道含肉類的菜式
每日減少吃一道含牛肉的菜式，一年可減少排放 810公斤二氧化碳
想知實行低碳行動可減多少碳，可以瀏覽 「校園低碳大行動」網頁：
.hk/carbon_off/
鼓勵同學以行動回應全球暖化 兩星期內填寫「學生低碳手冊」，記錄每 日碳排放 兩星期內碳排放量最低、碳排放量有最大 改善的同學都可獲獎
如何使用 「學生低碳手冊」?
1. 兩星期內每天記錄碳排放
要記錄的碳排放項目：能源、用水、資 源使用、飲食、資源回收
只需記錄自己的碳排放，家人使用而自 己沒有參與，則不用計算在內 學校課室使用的電器不用計算！
2. 每日減少使用電視遊戲機、電腦或電視 1 小時
每日減少使用電視遊戲機、電腦及電視各1小時， 一年可減少排放227公斤二氧化碳
3. 氣溫高於攝氏26度才開冷氣
每日以風扇代替冷氣4小時，1年可減少排放1,130 公斤二氧化碳
4. 臨睡前預設冷氣的關機時間為起床前1小時
介绍颐和园英语介绍ppt课件ppt课件
01
02
03
The protection of cultural heritage is crucial for maintaining national identity and promoting cultural diversity
The Summer Palace is not only a place of historical and cultural significance, but also an important symbol of traditional Chinese culture
It was once the private royal garden of the Qing Dynasty employees and their families, and was later opened to the public
The traditional Chinese garden is a unique form of landscape architecture that blends natural beauty with human creativity
1900
The Summer Palace is located on the northwestern bank of the West Lake in Hainan District, Beijing
It covers an area of 290 hectares, with a seminar of about 10 kilometers
The admission fee for the Summer Palace is 40 yuan for adults and 20 yuan for children
02
03
The protection of cultural heritage is crucial for maintaining national identity and promoting cultural diversity
The Summer Palace is not only a place of historical and cultural significance, but also an important symbol of traditional Chinese culture
It was once the private royal garden of the Qing Dynasty employees and their families, and was later opened to the public
The traditional Chinese garden is a unique form of landscape architecture that blends natural beauty with human creativity
1900
The Summer Palace is located on the northwestern bank of the West Lake in Hainan District, Beijing
It covers an area of 290 hectares, with a seminar of about 10 kilometers
The admission fee for the Summer Palace is 40 yuan for adults and 20 yuan for children
英文文献汇报PPT课件
Monoclonal antibodies against P. vivax MSP-1 42 Localization of P. vivax MSP-1 42 by indirect immunofluorescence
SDS–PAGE and immunoblotting
Purification of recombinant P. vivax MSP-1 42 expressed in E. coli Purification of plasmid for immunization
IF=2.218
.
1
.
2Hale Waihona Puke 1. Introduction
Merozoite surface protein-1 of malaria parasites, present on the surface of merozoite and playing a key role in the invasion process, is one of the leading vaccine targets for both P. falciparum and P. vivax malaria. MSP-1 occurs as a 200 kDa precursor and undergoes step-wise proteolytic processing resulting in a glycosyl-phosphatidylinositol-anchored 42 kDa protein fragment (MSP-1 42 ) on the surface of free merozoite. A large number of studies have shown the protective potential of MSP-1 fragments (42 and 19 kDa) of P. falci-parum and P. yoelii .
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The Sun
royal family, and has large headlines
The New
and lots of big
York Daily
photos.
News
Culture Corner-3. Speaking (5m)
1. Is it better to prints news of celebrities or traffic accidents? Explain your answer.
examples
concentrate on
news, sports,
the quality press
finance and cultural events.
The Times
( more serios
( tabloid )
concentrate on famous people, the
知识与技能
1.了解氯气的物理性质和实验室制法。 2.掌握氯气的化学性质：与金属的反 应，与非金属的反应，与水的反应，与 碱的反应。 3.氯气在生产、生活中的应用。
得1e－
Cl
Cl
元素原子得电子，表现什么性？你认为氯气在
化学反应中化合价会怎样变化？ 从氯的原子结构来推测，氯在自然界中会以
化合态存在还是以游离态存在？
阅读并思考
第一次世界大战时的1915年4月22日，德军 与英法联军在比利时的伊普尔对峙。黎明时分， 英法联军前线的士兵突然听到一阵剧烈地爆炸声， 紧接着看到一股阴森森的黄绿色气体逐渐从空中 降落下来。很快，战壕里的士兵们感觉双眼受到 了强烈地刺激，咳嗽响成一片，数百名英法战士 窒息死亡，数千名士兵双目失明。
谈谈你从中得到什么启示？
思考与交流
启示１：科学研究需要有正确的理论作指导， 错 误的理论只能浪费时间和精力。
启示２：科学研究需要以大量事实为依据，只有 大量事实才能推翻错误的理论，建立正确的理论 或推动科学理论的发展。
启示３：科学研究需要有热爱科学的思想和奉献 科学的精神。
思考、交流、探究：
☺舍勒发现氯气的方法至今还是实验室制取
有效成分:NaClO
2NaOH+Cl2= NaClO+NaCl+H2O
漂白液
有效成分:Ca(ClO)2
2Ca(OH)2+2Cl2= Ca(ClO)2+CaCl2+2H2O
漂白粉、漂粉精
Cl2 + 碱 = 氯化物 + 次氯酸盐 + H2O
课堂练习
1.下列物质属于纯净物
（ A）
A. 液氯 B. 氯水 C. 石灰水 D. 盐酸
C．有毒
D．不支持燃烧
5、下列化合物中，不能由氯气和相应的金属直
接反应来制取的是（C ）
A. FeCl3 B. CaCl2 C. FeCl2 D. KCl
6、 氯气、液氯、盐酸、氯水中均含有 （ D ） A. 氯分子 B. 氯原子 C. 氯离子 D. 氯元素
7、 用自来水养金鱼时，应先把自来水晒几天，目的 是__除___去__氯___气__和__次___氯__酸__,有关反应的化学方程式为： __C_l_2+__H_2_O__=_H_C_l_+_H__C_lO__, __2_H_C_lO = 2HCl +O2↑ 。
2. 将氯气通入紫色石蕊试液中，出现的现象是（ C ）
A. 溶液变为红色
B. 溶液变为蓝色
C. 溶液先变红后褪色
D. 溶液不变色
3. 下列物质具有漂白作用的是
（CD）
A.干燥的氯气 B. KCl溶液 C. 次氯酸 D. 过氧化钠
4、下列对Cl2的性质叙述不正确的是（BD ） A．黄绿色 B．不溶于水
fashion international
business celebrity polieticcos nojmouyrnafalissthion sportpolitpichsotogrsappohretr
International
people who work on newspapers and magazines
activities 5. business, buying or selling etc 6. The top man on a newspaper 7. Someone who writes for a
newspaper
Introduction-3. Matching (5m)
busineedssitorcejloeburrintyalist econompyhoetodgitroarpher
思考与交流
有人用软管将氯气导入鼠洞来杀灭老 鼠，效果很好，这样做，利用氯气的 什么性质？
一、氯气的物理性质
1.黄绿色气体。 2.有刺激性气味 3.有毒（怎么闻？） 4.能溶于水（1:2）,形成氯水。 5.易液化。 氯气 -34.6℃ 液氯 -101℃ 固态氯
(思考:氯气与氯水是同一物质吗?) 6.密度大于空气。
(3)氯气与水反应
氯气能溶于水，在25℃时1体积的水能溶解2 体积的氯气 。所得溶液称为氯水。
问题: 氯气溶于水的过程，只是简单的溶解吗? 若不是，你认为发生了什么反应？
猜想:氯气与水发生反应
H2O +Cl2 = HCl +HClO
实验探究：请设计实验，证明你的猜想，并 确定氯水的成分（有哪些微粒？）。
2. What is the most important function of a newspaper?
Homework
Try to find some information about the first Chinese taikonaut ---Yang Liwei and share with the classmates tomorrow .
用现有的试剂设计实验验证你的猜想？ 试剂：AgNO3溶液、稀硝酸、氯水、红布条、
蓝色石蕊试纸、CaCO3粉末
H2O +Cl2 = HCl +HClO
设想氯水中可 能存在的粒子
实验方案
现象
H+ Cl－
Cl2
ClO结论：
加CaCO3粉末 AgNO3溶液（HNO3）
分别通过干燥的红纸条 和湿润的红纸条
Period 1
Module 5 Newspaper and Magazines
Introduction +Culture Corner
Introduction-1 Filling (5m) Use proper words to
fill the blank.
3.front page
4. headline
案例再现
“果林氯气泄漏案”：1999年10月淮阴县果林乡一个体废 品收购站在切割一废弃的氯气钢瓶时造成氯气泄漏，使 得果林小学30 多名师生中毒。当时情况如图：
风向 西
泄漏点
较高堤坝
果林 小学
洼地
南
问题：若让你指挥果林小学师生疏散，你将怎样指挥以 避免这场灾难？你的依据是什么？
[科学史话]
请阅读P83“科学史话”－“氯气的发现和确 认”，你从这一史实中得到什么启示？
现象：氯水逐渐变无色，烧瓶顶部有无色气体。
结论：氯水久置会发生变质。 保存：棕色瓶中，阴凉、蔽光处保存。
思考：若有一瓶氯水，经长期放置后，
最后氯水的成分是什么？与新制氯水有 何区别？
Cl2
HClO
HCl
液氯与氯水的区别？新制氯水与久置氯水的区别？
液氯
氯水
分
纯净物
类
混合物 新制
久置
成 分
只有Cl2分子
types of news items
Introduction-4. Speaking (8m)
1. Are stories about celebrity a waste of time? 2. Which sections of newspaper do different
people look at first? 3. How important are pictures in newspaper? 4. How many types of newspaper workers can you
name?
Culture Corner-1. Speaking (4m) Do you know
them?
Culture Corner-2. Reading (8m) Read the
passage and fill the form.
types of the press
characteristics
氯气的主要方法之一。已知：软锰矿（MnO2） 与浓盐酸(HCl)反应产生黄绿色气体Cl2。你 能根据已学过的氧化还原反应和相关的知识 完成这个反应吗？
MnO2 + HCl（浓） ＝ Cl2↑ ＋ ？＋？
MnO2 + 4HCl（浓）=== MnCl2 + 2H2O + Cl2 ↑
氯气具有哪些重要的化学性质呢？同 学们经过预习，不一定知道了不少。 下面我们通过书写化学方程式竞赛的 形式来体现氯气的化学性质。
光照
H2+Cl2
2HCl
思考:1、烟和雾有什么区别? 2、燃烧一定需要氧气参加吗？
初中课本对燃烧的定义：
可燃物与空气中的氧气发生的一种发光发热 的剧烈的氧化反应。
现在你认为科学吗？
解答：燃烧不一定有氧气参加，任何发光 发热的剧烈的化学反应都称为燃烧。燃 烧的本质是氧化还原反应，
其他非金属如硅、磷、硫等在一定条件 下也能与氯气发生反应。
2.front cover 1. article