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14 tháng 5 2017

Câu hỏi thực tiễn thú vị

Hã tìm hiểu về thành phần hóa học của chúng :

Thành phần của Coca Cola:

Nước, CO2, chất tạo màu caramel, chất tạo hương vị: vanilla, cinnamon, citrus, chất làm ngọt: đường, syrup hay chất làm ngọt nhân tạo, chất bảo quản. Cocacola có môi trường acid.

Thành phần mentosC

Các chất tạo hương vị: bạc hà, cam, dâu, chanh, táo, nho...; đường, tinh bột, chất nhũ hóa, gum arabic, dầu dừa đã hydro hóa, gelatin.

rong quá trình tạo cocacola, CO2 được ép với áp suất rất lớn để hòa tan vào nước, một phần nhỏ chuyển thành acid carbonic, phần còn lại dưới dạng các bóng khí rất nhỏ. Các bóng khí này bị các phân tử nước nhốt lại. Vì nước có sức căng bề mặt lớn, các bong bóng khí ko thể vượt quá sức căng bề mặt để kết hợp lại.

Khi cho mentos vào nước, gelatin và gum arabic hòa tan, làm giảm sức căng bề mặt của nước, các bong bóng khí dễ kết hợp lại với nhau hình thành bong bóng lớn hơn và nổi lên bề mặt.

Mặt khác, mentos có diện tích bề mặt lớn, là nơi hình thành các mầm cho các bong bóng phát triển lớn hơn (giống như khi chưng cất ta cho đá bọt vào vậy). Khi cho viên mentos vào cocacola, các bóng khí hình thành rất nhiều và viên mentos lại chìm dần xuống đáy, lượng bóng khí lại tăng lên rất nhiều, dẫn tới hiện tượng bùng phát các bóng khí .

Coca Cola is a popular drink for people all over the world. At first, very few people drank Coca Cola, but now it is sold in more than 160 countries. More than 1.6 billion gallons are sold every year.​Coca Cola was invented by Dr. Pemberton in Atlanta on May 8th, 1886. However, the name Coca Cola was given by Frank Robinson, one of Dr. Pemberton’s partner. Later, in 1888, the business was sold to another man, Asa Candler. He opened his first factory to produce this drink in 1895 in Dallas,...
Đọc tiếp

Coca Cola is a popular drink for people all over the world. At first, very few people drank Coca Cola, but now it is sold in more than 160 countries. More than 1.6 billion gallons are sold every year.
​Coca Cola was invented by Dr. Pemberton in Atlanta on May 8th, 1886. However, the name Coca Cola was given by Frank Robinson, one of Dr. Pemberton’s partner. Later, in 1888, the business was sold to another man, Asa Candler. He opened his first factory to produce this drink in 1895 in Dallas, Texas. Since then a great quantity of Coca Cola has been produced there.
​Since 1982, a special kind of Coca Cola has been made for overweight people – diet Coke. They have used many clever advertisements to increase the amount of Coca Cola sold every year.
​Besides Coca Cola, there are many other drinks of the same kind sold all over the world such as Pepsi Cola, Sp-Cola and Dr. Pepper. However, Coca Cola is the most popular. People drink Coca Cola with their meals, when they are thirsty or when they socialise with their friends.
​It is certain that more and more people will drink Coca Cola all over the world in this century.
2.The word “there” refers to __________.
​A. where Coca Cola was first made​​
B. the city with the first Coca Cola factory
​C. Atlanta, a US city
​​​​D. the place that Coca Cola is sold
3.Which of the following is closest in meaning to the world ''popular''
A.nutritious
B.well-know
C.friendly
D.well-scaterred
4.Which of the following could be the best title of the passage?
A.The Invention and History of Coca-cola
B.Coca is the World 's Most Popular Soft Drink
C.John Pemberton created Coca-Cola
D.More and more people drink Coca Cola all over the world.
 

1
4 tháng 4 2022

2- B   3- B   4- A

26 tháng 2 2018

Độ tan của khí trong nước tỉ lệ thuận với áp suất và tỉ lệ nghịch với nhiệt độ. Bản chất tạo ra ga của bất kì một loại nước ngọt có ga nào là dùng áp suất cao, nén khí CO2 tan đến mức hòa vào nước ngọt. Khi ta mở nắp chai, áp xuất trong chai lớn hơn nhiều so với áp suất khí quyển, và độ tan của khí CO2 giảm đột ngột, khí CO2 được giải phóng và tạo ra bọt ga. Trước khi mở, nếu lắc mạnh lon nước ngọt, độ tan của khí cũng đã bắt đầu giảm, một phần khí không còn tan nữa bay lên khoảng trống trong chai làm tăng áp suất trong chai, vì vậy tạo ra khí mạnh

26 tháng 2 2018

Nguyên nhân là do nhà sản xuất sụt khí CO2 vào trong nước uống có ga nên khi rót vào vào cốc khí CO2 thoát ra nên nó xuất hiện nhiều.

II/ Read the following passage and choose the best answer each of the questions.Coca- Cola is enjoyed all over the world. 1.6 billion gallons are sold every year, in over onehundred and sixty countries. The drink was invented by Dr John Pemberton in Atlanta, on 8 May1886, but it was given the name Coca-Cola by his partner, Frank Robinson. In the first year, only ninedrinks a day were sold. The business was bought by a man called Asa Candler in 1888, and the firstfactory was opened in Dallas,...
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II/ Read the following passage and choose the best answer each of the questions.
Coca- Cola is enjoyed all over the world. 1.6 billion gallons are sold every year, in over one
hundred and sixty countries. The drink was invented by Dr John Pemberton in Atlanta, on 8 May
1886, but it was given the name Coca-Cola by his partner, Frank Robinson. In the first year, only nine
drinks a day were sold. The business was bought by a man called Asa Candler in 1888, and the first
factory was opened in Dallas, Texas, in 1895. Coca- Cola is still made there. Billions of bottles and
cans have been produced since 1895.
1. The one who invented Coca Cola was ..................
A. Dr John Pemberton                   B. Frank Robinson
C. Asa Candler                               D. Dallas

2. What does the word “it” in line 3 refer to?
A. the world B. gallon C. country D. the drink
3. The first Coca Cola company was opened...................
A. in 1886 B. in 1888 C. in 1895 D. since 1895
4. Nowadays, Coca Cola is sold ........................
A. all over the world          B. in more than 160 countries
C. everywhere                   D. all are correct

5. Which of the following is not true?
A. Every year, 1.6 billion gallons of Coca Cola are sold.
B. Coca- Cola is still produced in Dallas.
C. Nowadays, people don’t want to buy Coca – Cola any more.
D. At first, people didn’t like Coca- Cola very much.

1
THE STORY OF COCA-COLACoca-Cola was invented in 1886 by John Pemberton, a druggist living in Atlanta. The original drink was a type of syrup, using coca leaves, sugar and cola nuts, plus a few other secret ingredients! Pemberton sold it as a medicine; and with its coca (the source of cocaine), it must have made people feel good!Nevertheless, Pemberton’s medicine was not very successful, so he sold his secret formula to another druggist, Asa Candler. Candler was interested, because he had another...
Đọc tiếp

THE STORY OF COCA-COLA

Coca-Cola was invented in 1886 by John Pemberton, a druggist living in Atlanta. The original drink was a type of syrup, using coca leaves, sugar and cola nuts, plus a few other secret ingredients! Pemberton sold it as a medicine; and with its coca (the source of cocaine), it must have made people feel good!

Nevertheless, Pemberton’s medicine was not very successful, so he sold his secret formula to another druggist, Asa Candler. Candler was interested, because he had another idea that Pemberton’s “medicine” would be much better if it was mixed with soda. Candler was thus the man who really invented the drink Coca-Cola. Candler also advertised his new drink, and soon people were going to drugstores just to get a drink of Coca-Cola.

Before long, other people became interested in the product, including a couple of businessmen who wanted to sell it in bottles. Candler sold them a licence to bottle the drink, and very quickly the men became millionaires. The famous bottle, with its very distinctive shape, was designed in 1916. And the famous Coca-Cola logo is the most famous logo in the world. Unlike any other famous commercial logos, it has not changed in 100 years!

During the First World War, American soldiers in Europe began asking for Coca-Cola, so the Coca-Cola company began to export to Europe. It was so popular with soldiers that they then had to start bottling the drink in Europe.

Today, Coca-Cola is made in countries all over the world, including Russia and China; it is the world’s most popular drink.

As for the famous formula, it is probably the world’s most valuable secret! The exact ingredients for making Coca-Cola are only known to a handful of people. And as for the “coca” that was in the original drink, that was eliminated in 1903. It was a drug, and too dangerous. Today’s Coca-Cola contains caffeine, but not cocaine!

87. According to the passage, Coca-Cola was first introduced in ____.

A. America            B. China              C. Europe                  D. Russia

88. According to the passage, the original drink made people feel good because it contained ____.

A. coca leaves             B. cola nuts             C. secret ingredients                  D. sugar

89. It is stated in the passage that Candler was interested in the product because he thought ____.

A. he could develop the original formula by adding soda

B. he would sell it and quickly became a millionaire

C. it was an useful medicine which made people feel good

D. Pemberton’s medicine was very famous and successful

90. The word “licence” in the passage is closest in meaning to ____.

A. certificate            B. permission            C. charter              D ticket

91. The word “distinctive” in the passage is opposite in meaning to ____.

A. normal            B. original            C. ugly                D unique

92. When were the Coca-Cola’s bottle shape and logo designed according to the passage?

A. in 1886               B. in 1916               C. in 1930               D. in 1986

93 The word “eliminated” in the passage probably means ____.

A. banned             B. destroyed           C. erased             D. excluded

94. According to the passage, what is NOT true about the formula of Coca-Cola ?

A. It is probably the world’s most priceless secret.

B. It was really invented by the druggist. Asa Candler.

C. Its exact ingredients are well known to many people.

D. Its ingredient was changed from cocaine to caffeine.

2
5 tháng 1 2022

87. According to the passage, Coca-Cola was first introduced in ____.

A. America            B. China              C. Europe                  D. Russia

88. According to the passage, the original drink made people feel good because it contained ____.

A. coca leaves             B. cola nuts             C. secret ingredients                  D. sugar

89. It is stated in the passage that Candler was interested in the product because he thought ____.

A. he could develop the original formula by adding soda

B. he would sell it and quickly became a millionaire

C. it was an useful medicine which made people feel good

D. Pemberton’s medicine was very famous and successful

90. The word “licence” in the passage is closest in meaning to ____.

A. certificate            B. permission            C. charter              D ticket

91. The word “distinctive” in the passage is opposite in meaning to ____.

A. normal            B. original            C. ugly                D unique

92. When were the Coca-Cola’s bottle shape and logo designed according to the passage?

A. in 1886               B. in 1916               C. in 1930               D. in 1986

93 The word “eliminated” in the passage probably means ____.

A. banned             B. destroyed           C. erased             D. excluded

94. According to the passage, what is NOT true about the formula of Coca-Cola ?

A. It is probably the world’s most priceless secret.

B. It was really invented by the druggist. Asa Candler.

C. Its exact ingredients are well known to many people.

D. Its ingredient was changed from cocaine to caffeine.

5 tháng 1 2022

87. According to the passage, Coca-Cola was first introduced in ____.

A. America            B. China              C. Europe                  D. Russia

88. According to the passage, the original drink made people feel good because it contained ____.

A. coca leaves             B. cola nuts             C. secret ingredients                  D. sugar

89. It is stated in the passage that Candler was interested in the product because he thought ____.

A. he could develop the original formula by adding soda

B. he would sell it and quickly became a millionaire

C. it was an useful medicine which made people feel good

D. Pemberton’s medicine was very famous and successful

90. The word “licence” in the passage is closest in meaning to ____.

A. certificate            B. permission            C. charter              D ticket

91. The word “distinctive - khác biệt” in the passage is opposite - trái nghĩa in meaning to ____.

A. normal   - bình thường         B. original  - nguyên bản          C. ugly    - xấu xí            D unique - độc đáo

92. When were the Coca-Cola’s bottle shape and logo designed according to the passage?

A. in 1886               B. in 1916               C. in 1930               D. in 1986

93 The word “eliminated” in the passage probably means ____.

A. banned             B. destroyed           C. erased             D. excluded

94. According to the passage, what is NOT true about the formula of Coca-Cola ?

A. It is probably the world’s most priceless secret.

B. It was really invented by the druggist. Asa Candler.

C. Its exact ingredients are well known to many people.

D. Its ingredient was changed from cocaine to caffeine.

14 tháng 2 2017

Hoàn tất doạn hội thoại ,sau đó trả lời các câu hỏi

Mai is at the canteen . she wants some noodles and som coca-cola

Can I .....help...... you?

Yes ....please...... .....I...... ......want...... a bowl of noodles and glass of coca-cola

Here .....you....... ......are....

Thanks . .......How........ ....much..... are they?

14 tháng 2 2017

Mai is at the canteen. She wants some noodles and some coca-cola

Can I help you ?

Yes pleased, I need a bowl of noodles and a glass of coca-cola

Here you are

Thanks. How much are they ?

10 tháng 2 2017

Salesgirl : Can I ___help_______ you?

Mai : Yes. ______I____ _____would_____ _____like_____ a bowl of noodles and a glass of Coca-Cola.

Salesgirl : Here _____you_____ ______are____.

Mai : Thanks. _____How_____ _____much_____ are they?

Salesgirl : Eighteen thousand dong. Thank you.

1. What does Mai want?

She wants some noodles and some Coca-Cola.

2. How many noodles does she want?

She want a bowl of noodles.

3. How much Coca-Cola does she want?

She wants a glass of Coca-Cola.

4. How much are they?

It's Eighteen thousand dong

5. Where is she?

She is at the canteen.

10 tháng 2 2017

Salesgirl: Can I help you ?

Mai : Yes. I want some a bowl of noodles and a glass of Coca - Cola.

Salesgirl: Here you are.

Mai : Thanks. How much are they ?

Salesgirl: Eighteen thousand dong. Thank you.

1. She wants some noodles and some Coca - Cola

2. She wants a bowl of noodles

3. She wants a glass of Coca - Cola

4. Eighteen thousand dong

5. She is at the canteen

11 tháng 7 2020

Coca-cola is enjoyed all over the world and it... are sold.. ( sell ) in over one hundred and sixty countries.The drink was inventend by Dr John Pemberton in Atlanta as a health drink on 8 May 1886. His partner ,frank robinson, ..gave .. ( give ) it the name Coca-Cola.In the frist year, they only ..sold.. ( sell ) nine drinks a day.

The business was bought by a man called Asa Candler in 1888,and the first factory was opened in dallas,texas,in 1895. Coca-Cola is still made there. They ..have produced..( produce ) billions of bottles and cans since 1895.