Alex has a glass of milk.Do you think the milk in the glass is solution or not kevin put some sand into water.Did he make a solution ?Explain why. Write name 3 insoluble mixtures and 3 solutions Ja...

BD

Bích Dao

14 tháng 12 2017

Alex has a glass of milk.Do you think the milk in the glass is solution or not

kevin put some sand into water.Did he make a solution ?Explain why.

Write name 3 insoluble mixtures and 3 solutions

James has a solution of salt and water,he wants to separate salt from water,what should he do?

Tra lời tất cả bằng tiếng anh nhé!

#Tiếng anh lớp 6

1

LT

Linh Thùy

29 tháng 1 2018

- Alex has a glass of milk. => The milk in the glass is solution.

- Kevin put some sand into water. => He didn't make a solution because when you mix sand with water the sand can't be a liquid.

- 3 insoluble mixtures:

+ sand with water

+ rocks with water

+ paper with water

- 3 solutions:

+ water

+ orange juice

+ milk

- James has a solution of salt and water, he wants to separate salt from water => He should take a spoon and put the salt out of the glass.

Đúng(0)

SL

Sương Lê

7 tháng 5 2018

These are enough hours in a day? We think we have invented the solution that can(1) our life . The name of the solution is Jupitor robot . Jupitor is a (2) robot.Easy to operate, jupitor can help you with allthe (3) . he can wash the clothes , iron and even(4) . he can clean floors and windows

#Tiếng anh thí điểm lớp 6

1

NQ

Nguyễn Quỳnh Giang

10 tháng 5 2018

Đề bài là j thế bạn?

Đúng(0)

LQ

Lê Quỳnh Anh

9 tháng 5 2017

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions. Glass is a remarkable substance made from the simplest raw materials. It can be colored or colorless, monochrome or polychrome, transparent, translucent, or opaque. It is lightweight impermeable to liquids, readily cleaned and reused, durable yet fragile, and often very beautiful. Glass can be decorated in multiple ways and its optical properties are...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

Glass is a remarkable substance made from the simplest raw materials. It can be colored or colorless, monochrome or polychrome, transparent, translucent, or opaque. It is lightweight impermeable to liquids, readily cleaned and reused, durable yet fragile, and often very beautiful. Glass can be decorated in multiple ways and its optical properties are exceptional. In all its myriad forms - as table ware, containers, in architecture and design - glass represents a major achievement in the history of technological developments.

Since the Bronze Age about 3, 000 B.C., glass has been used for making various kinds of objects. It was first made from a mixture of silica, line and an alkali such as soda or potash, and these remained the basic ingredients of glass until the development of lead glass in the seventeenth century. When heated, the mixture becomes soft and malleable and can be formed by various techniques into a vast array of shapes and sizes. The homogeneous mass thus formed by melting then cools to create glass, but in contrast to most materials formed in this way (metals, for instance), glass lacks the crystalline structure normally associated with solids, and instead retains the random molecular structure of a liquid. In effect, as molten glass cools, it progressively stiffens until rigid, but does so without setting up a network of interlocking crystals customarilyassociated with that process. This is why glass shatters so easily when dealt a blow. Why glass deteriorates over time, especially when exposed to moisture, and why glassware must be slowly reheated and uniformly cooled after manufacture to release internal stresses induced by uneven cooling.

Another unusual feature of glass is the manner in which its viscosity changes as it turns from a cold substance into a hot, ductile liquid. Unlike metals that flow or freeze at specific temperatures glass progressively softens as the temperature rises, going through varying stages of malleability until it flows like thick syrup. Each stage of malleability allows the glass to be manipulated into various forms, by different techniques, and if suddenly cooled the object retains the shape achieved at that point. Glass is thus amenable to a greater number of heat-forming techniques than most other materials.

What does the author imply about the raw materials used to make glass?

A. They were the same for centuries

B. They are liquid

C. They are transparent

D. They are very heavy

#Mẫu giáo

1

DH

Dương Hoàn Anh

9 tháng 5 2017

Đáp án A.

Keywords: raw materials, make glass.

Clue: “It was first made from a mixture of silica, line and an alkali such as soda or potash, and these remained the basic ingredients of glass until the development of lead glass in the seventeenth century”: Thủy tinh được làm từ hỗn hợp silic, thép, chất kiềm ví dụ như Natri cacbonat hoặc Kali cacbonat, và đây vẫn là các nguyên liệu cơ bản của thủy tinh cho đến khi có sự phát triển của thủy tinh chì vào thể kỷ 17.

Phân tích: Đến thế kỷ 17, các nguyên liệu cơ bản để tạo ra thủy tinh vẫn không thay đổi. Do đó, chọn đáp án A. They were the same for centuries: Các nguyên liệu thô vẫn như vậy trong nhiều thế kỷ.

Các đáp án khác không phù hợp:

B. They are liquid: Các nguyên liệu thô là chất lỏng.

C. They are transparent: Các nguyên liệu thô trong suốt.

D. They are very heavy: Các nguyên liệu thô rất nặng

Đúng(0)

LQ

Lê Quỳnh Anh

3 tháng 8 2019

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions. Glass is a remarkable substance made from the simplest raw materials. It can be colored or colorless, monochrome or polychrome, transparent, translucent, or opaque. It is lightweight impermeable to liquids, readily cleaned and reused, durable yet fragile, and often very beautiful. Glass can be decorated in multiple ways and its optical properties are...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

Glass is a remarkable substance made from the simplest raw materials. It can be colored or colorless, monochrome or polychrome, transparent, translucent, or opaque. It is lightweight impermeable to liquids, readily cleaned and reused, durable yet fragile, and often very beautiful. Glass can be decorated in multiple ways and its optical properties are exceptional. In all its myriad forms - as table ware, containers, in architecture and design - glass represents a major achievement in the history of technological developments.

Since the Bronze Age about 3, 000 B.C., glass has been used for making various kinds of objects. It was first made from a mixture of silica, line and an alkali such as soda or potash, and these remained the basic ingredients of glass until the development of lead glass in the seventeenth century. When heated, the mixture becomes soft and malleable and can be formed by various techniques into a vast array of shapes and sizes. The homogeneous mass thus formed by melting then cools to create glass, but in contrast to most materials formed in this way (metals, for instance), glass lacks the crystalline structure normally associated with solids, and instead retains the random molecular structure of a liquid. In effect, as molten glass cools, it progressively stiffens until rigid, but does so without setting up a network of interlocking crystals customarilyassociated with that process. This is why glass shatters so easily when dealt a blow. Why glass deteriorates over time, especially when exposed to moisture, and why glassware must be slowly reheated and uniformly cooled after manufacture to release internal stresses induced by uneven cooling.

Another unusual feature of glass is the manner in which its viscosity changes as it turns from a cold substance into a hot, ductile liquid. Unlike metals that flow or freeze at specific temperatures glass progressively softens as the temperature rises, going through varying stages of malleability until it flows like thick syrup. Each stage of malleability allows the glass to be manipulated into various forms, by different techniques, and if suddenly cooled the object retains the shape achieved at that point. Glass is thus amenable to a greater number of heat-forming techniques than most other materials.

Why does the author list the characteristics of glass in paragraph 1?

A. To demonstrate how glass evolved

B. To show the versatility of glass

C. To explain glassmaking technology

D. To explain the purpose of each component of glass

#Mẫu giáo

1

DH

Dương Hoàn Anh

3 tháng 8 2019

Đáp án B.

Keywords: characteristics of glass, paragraph 1.

Clue: “Glass can be decorated in multiple ways and its optical properties are exceptional. In all its myriad forms...”: Thủy tinh có thể được trang trí theo nhiều cách và những tinh chất quang học của nó rất đặc biệt. Trong tất cả các hình dáng vô cùng đa dạng...

Phân tích: Theo như manh mối thì tác giả liệt kê các đặc tính của thủy tinh nhằm thể hiện tính linh hoạt của nó. Vậy chọn đáp án B. To show the versatility of glass. Các đáp án khác không phù hợp:

A. To demonstrate how glass evolved: Để diễn tả sự phát triển của thủy tỉnh.

C. To explain glassmaking technology: Để giải thích công nghệ chế tạo thủy tinh.

D. To explain the purpose of each component of glass: Để giải thích chức năng của mỗi thành phần trong thủy tinh

Đúng(0)

LQ

Lê Quỳnh Anh

6 tháng 2 2018

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions.Glass is a remarkable substance made from the simplest raw materials. It can be colored or colorless, monochrome or polychrome, transparent, translucent, or opaque. It is lightweight impermeable to liquids, readily cleaned and reused, durable yet fragile, and often very beautiful. Glass can be decorated in multiple ways and its optical properties are...

Đọc tiếp

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions.

Glass is a remarkable substance made from the simplest raw materials. It can be colored or colorless, monochrome or polychrome, transparent, translucent, or opaque. It is lightweight impermeable to liquids, readily cleaned and reused, durable yet fragile, and often very beautiful. Glass can be decorated in multiple ways and its optical properties are exceptional. In all its myriad forms - as table ware, containers, in architecture and design - glass represents a major achievement in the history of technological developments.

Since the Bronze Age about 3,000 B.C., glass has been used for making various kinds of objects. It was first made from a mixture of silica, line and an alkali such as soda or potash, and these remained the basic ingredients of glass until the development of lead glass in the seventeenth century. When heated, the mixture becomes soft and malleable and can be formed by various techniques into a vast array of shapes and sizes. The homogeneous mass thus formed by melting then cools to create glass, but in contrast to most materials formed in this way (metals, for instance), glass lacks the crystalline structure normally associated with solids, and instead retains the random molecular structure of a liquid. In effect, as molten glass cools, it progressively stiffens until rigid, but does so without setting up a network of interlocking crystals customarily associated with that process. This is why glass shatters so easily when dealt a blow. Why glass deteriorates over time, especially when exposed to moisture, and why glassware must be slowly reheated and uniformly cooled after manufacture to release internal stresses induced by uneven cooling.

Another unusual feature of glass is the manner in which its viscosity changes as it turns from a cold substance into a hot, ductile liquid. Unlike metals that flow or "freeze" at specific temperatures glass progressively softens as the temperature rises, going through varying stages of malleability until it flows like a thick syrup. Each stage of malleability allows the glass to be manipulated into various forms, by different techniques, and if suddenly cooled the object retains the shape achieved at that point. Glass is thus amenable to a greater number of heat-forming techniques than most other materials.

What does the author imply about the raw materials used to make glass?

A. They were the same for centuries

B. They are liquid.

C. They are transparent

D. They are very heavy

#Mẫu giáo

1

DH

Dương Hoàn Anh

6 tháng 2 2018

Đáp án A.

Key words: raw materials, make glass.

Clue: “It was first made from a mixture of silica, line and an alkali such as soda or potash, and these remained the basic ingredients of glass until the development of lead glass in the seventeenth century.” Thủy tinh được làm từ hỗ hợp silic, thép, chất kiềm ví dụ như Natri cacbonat hoặc Kali cacbonat, và đây vẫn là các nguyên liệu cơ bản của thủy tinh cho đến khi có sự phát triển của thủy tinh chì vào thế kỷ 17.

Phân tích: Đến thế kỷ 17, các nguyên liệu cơ bản để tạo ra thủy tinh vẫn không thay đổi. Do đó, chọn đáp án A. They were the same for centuries: Các nguyên liệu thô vẫn như vậy trong nhiều thế kỷ.

Các đáp án khác không phù hợp:

B. They are liquid: Các nguyên thô là chất lỏng.

C. They are transparent: Các nguyên liệu thô trong suốt.

D. They are very heavy: Các nguyên thô rất nặng.

Đúng(0)

LQ

Lê Quỳnh Anh

10 tháng 8 2019

Read the following passage and then choose the best answer A, B, C or D. Glass is a remarkable substance made from simplest raw materials. It can be colored or colorless, monochrome or polychrome, transparent, translucent or opaque. It is lightweight impermeable to liquids, readily cleaned and reused, durable yet fragile, and often very beautiful. Glass can be decorated in multiple ways and its optical properties are exceptional. In all its myriad forms-as table ware, containers, in...

Đọc tiếp

Read the following passage and then choose the best answer A, B, C or D.

Glass is a remarkable substance made from simplest raw materials. It can be colored or colorless, monochrome or polychrome, transparent, translucent or opaque. It is lightweight impermeable to liquids, readily cleaned and reused, durable yet fragile, and often very beautiful. Glass can be decorated in multiple ways and its optical properties are exceptional. In all its myriad forms-as table ware, containers, in architecture and design-glass represents a major achievement in the history of technological developments.

Since the Bronze Age about 3,000 B.C, glass has been used for making various kinds of objects. It was first made from a mixture of silica, line and an alkali such as soda or potash, and these remained the basic ingredients of glass until the development of lead glass in the seventeenth century. When heated, the mixture becomes soft, and malleable and can be formed by various techniques into a vast array of shapes and sizes. The homogeneous mass is thus formed by melting then cooling to create glass, but in contrast to most materials formed in this way (metals, for instance), glass lacks the crystalline structure normally associated with solids, and instead retains the random molecular structure of a liquid. In effect, as molten glass cools, it progressively stiffens until rigid, but does so without setting up a network of interlocking crystals customarily associated with that process. This is why glass shatters so easily when dealt a blow, why glass deteriorates over time, especially when exposed to moisture, and why glassware must be slowly reheated and uniformly cooled after manufacture to release internal stresses induced by uneven cooling.

Another unusual feature of glass is the manner in which its viscosity changes as it turns from a cold substance into a hot, ductile liquid. Unlike metals that flow or “freeze” at specific temperatures, glass progressively softens as the temperature rises, going through varying stages of malleability until it flows like a thick syrup. Each stage of malleability allows the glass to be manipulated into various forms, by different techniques, and if suddenly cooled the object retains the stage achieved at that point. Glass is thus amenable to a greater number of heat-forming techniques than most other materials

What does the author imply about the raw materials used to make glass?

A. They are transparent

B. They were the same for centuries

C. They are very heavy

D. They are liquid

#Mẫu giáo

1

DH

Dương Hoàn Anh

10 tháng 8 2019

Đáp án B
Nói về các nguyên liệu làm nên thủy tinh, đáp án của câu hỏi nằm ở dòng thứ 2 và 3 của đoạn số 2. Câu nói
đã nêu rõ nguồn gốc ban đầu thủy tinh được làm qua từ “made from a mixture of (được làm từ hỗn hợp)” và
“remained the basic ingredients of glass … in the seventeenth century (duy trì những nguyên liệu cơ bản của thủy
tinh..cho tới tận thế kỉ thứ 17)

Đúng(0)

LQ

Lê Quỳnh Anh

16 tháng 7 2017

Read the passage and choose the best answer.You can recycle many types of glass. Glass food and beverage containers can be reused and recycled many times. (In fact, only bulbs, ceramic glass, dishes and window glass can’t be recycled.)Glass is made from soda ash, sand and lime. If it’s thrown away, it stays there indefinitely because glass never breaks down into its original ingredients. To be recycled, glass is sorted by color, crushed into small pieces and melted down into a liquid. Then,...

Đọc tiếp

#Tiếng anh thí điểm lớp 7

1

DH

Dương Hoàn Anh

16 tháng 7 2017

Đáp án: A

Đúng(0)

LQ

Lê Quỳnh Anh

2 tháng 7 2019

Read the passage and choose the best answer.You can recycle many types of glass. Glass food and beverage containers can be reused and recycled many times. (In fact, only bulbs, ceramic glass, dishes and window glass can’t be recycled.)Glass is made from soda ash, sand and lime. If it’s thrown away, it stays there indefinitely because glass never breaks down into its original ingredients. To be recycled, glass is sorted by color, crushed into small pieces and melted down into a liquid. Then,...

Đọc tiếp

#Tiếng anh thí điểm lớp 7

1

DH

Dương Hoàn Anh

2 tháng 7 2019

Đáp án: A

Đúng(0)

LQ

Lê Quỳnh Anh

19 tháng 8 2017

Read the passage and choose the best answer.You can recycle many types of glass. Glass food and beverage containers can be reused and recycled many times. (In fact, only bulbs, ceramic glass, dishes and window glass can’t be recycled.)Glass is made from soda ash, sand and lime. If it’s thrown away, it stays there indefinitely because glass never breaks down into its original ingredients. To be recycled, glass is sorted by color, crushed into small pieces and melted down into a liquid. Then,...

Đọc tiếp

#Tiếng anh thí điểm lớp 7

1

DH

Dương Hoàn Anh

19 tháng 8 2017

Đáp án: A

Đúng(0)

LQ

Lê Quỳnh Anh

16 tháng 1 2018

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions. Glass is a remarkable substance made from the simplest raw materials. It can be colored or colorless, monochrome or polychrome, transparent, translucent, or opaque. It is lightweight impermeable to liquids, readily cleaned and reused, durable yet fragile, and often very beautiful. Glass can be decorated in multiple ways and its optical properties are...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

Glass is a remarkable substance made from the simplest raw materials. It can be colored or colorless, monochrome or polychrome, transparent, translucent, or opaque. It is lightweight impermeable to liquids, readily cleaned and reused, durable yet fragile, and often very beautiful. Glass can be decorated in multiple ways and its optical properties are exceptional. In all its myriad forms - as table ware, containers, in architecture and design - glass represents a major achievement in the history of technological developments.

Since the Bronze Age about 3, 000 B.C., glass has been used for making various kinds of objects. It was first made from a mixture of silica, line and an alkali such as soda or potash, and these remained the basic ingredients of glass until the development of lead glass in the seventeenth century. When heated, the mixture becomes soft and malleable and can be formed by various techniques into a vast array of shapes and sizes. The homogeneous mass thus formed by melting then cools to create glass, but in contrast to most materials formed in this way (metals, for instance), glass lacks the crystalline structure normally associated with solids, and instead retains the random molecular structure of a liquid. In effect, as molten glass cools, it progressively stiffens until rigid, but does so without setting up a network of interlocking crystals customarilyassociated with that process. This is why glass shatters so easily when dealt a blow. Why glass deteriorates over time, especially when exposed to moisture, and why glassware must be slowly reheated and uniformly cooled after manufacture to release internal stresses induced by uneven cooling.

Another unusual feature of glass is the manner in which its viscosity changes as it turns from a cold substance into a hot, ductile liquid. Unlike metals that flow or freeze at specific temperatures glass progressively softens as the temperature rises, going through varying stages of malleability until it flows like thick syrup. Each stage of malleability allows the glass to be manipulated into various forms, by different techniques, and if suddenly cooled the object retains the shape achieved at that point. Glass is thus amenable to a greater number of heat-forming techniques than most other materials.

The word “it” in paragraph 3 refers to_______.

A. feature

B. glass

C. manner

D. viscosity

#Mẫu giáo

1

DH

Dương Hoàn Anh

16 tháng 1 2018

Đáp án B.

Keywords: it, paragraph 3

Clue: “Another unusual feature of glass is the manner in which its viscosity changes as it turns from a cold substance into a hot...”: Một đặc tính lạ nữa của thủy tinh là cách mà độ dẻo của nó thay đổi khi nó chuyển từ một chất lạnh sang một chất nóng ...

Phân tích: Ta chiếu lên các từ phía trước. Chọn đáp án B. glass: thủy tinh.

Các đáp án khác không phù hợp:

A. feature: đặc tính

C. manner: kiểu, cách

D. viscosity: độ dẻo

Đúng(0)

Chúng tôi đề xuất

Tài nguyên

Ứng dụng mobile

Bảng xếp hạng

Các khóa học có thể bạn quan tâm

Yêu cầu VIP