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dịch :
Nếu bạn thêm oxi và hiđro vào cùng một lúc thì chất lỏng này sẽ có dạng như thế nào?
cái này là hóa học lớp 6 mà mik ko trả lời đc
/HT\
X Read the passage. Answer the questions below.
Scientists have discovered that the ozone layer is getting thinner. Some predict that the sun’s rays will cause a sharp increase in deaths from skin cancer over the next fifty years. These harmful rays can also damage the eyes, create wrinkles, and cause other health problems.
The stratosphere contains a form of oxygen called ozone. Ozone is a molecule composed of three oxygen atoms. The chemical formula of ozone is 03. Oxygen molecules make up about 21% of all gases in the Earth’s atmosphere. They consist of two atoms of oxygen and are labeled 02. Most ozone found in our atmosphere is formed by an interaction between oxygen molecules and ultraviolet radiation (UV) from the sun. When ultraviolet radiation hits an oxygen molecule, it may cause the molecule to break apart into single atoms of oxygen. These single atoms are very reactive, and a single oxygen atom can combine with a molecule of oxygen to form ozone.
1.What do people say about the rate of deaths from skin cancer in the future?
=> Some predict that the sun’s rays will cause a sharp increase in deaths from skin cancer over the next fifty years. These harmful rays can also damage the eyes, create wrinkles, and cause other health problems.
2. How many oxygen atoms are there in a molecule?
=> Oxygen molecules make up about 21% of all gases in the Earth’s atmosphere
3.What elements participate in the formation process of ozone?
=> Most ozone found in our atmosphere is formed by an interaction between oxygen molecules and ultraviolet radiation (UV) from the sun.
4.What happens when an oxygen molecule and an ultraviolet radiation hit each other?
=> When ultraviolet radiation hits an oxygen molecule, it may cause the molecule to break apart into single atoms of oxygen
5.What is the feature of single atoms?
=> These single atoms are very reactive, and a single oxygen atom can combine with a molecule of oxygen to form ozone.
I. Reorder the sentences
1. like/ What/ Seven Dwarfs/ are/ like? What are Seven Dwarfs like?
2. books/ are/ reading/ What/ you/ ? What books are you reading?
3. in/ your/ What/ do/ free/ you/ time/ do/ ?
What do you do in your free time?
4. The/ is/ called/ main/ a schoolboy/ character/ Kudo.
The main character is a schoolboy called Kudo.
5. She / and/ is/ The/ reading/ Crow/ Fox.
She is reading The Crow and Fox
6. He/ stays/ and/ home/ comic books/ at/ read/ often.
He often stays at home and reads comic books
7. very/ because/ I/ him/ he/ clever/ like/ much/ is/ and brave.
I like him very much because he is clever and brave
8. story/ I/ reading/ am/ Cinderella/ the.
I am reading the Cinderella story
9. in/ reading/ fairy tales/ her/ She/ time/ likes/ free.
She likes reading fairy tales in her free time
10. it/ when/ can/ finish/ You/ it/ have/ I
You can have it when I finish it
1.The life in the countryside makes us relaxed because it is very.......peaceful.......(peace)
2. She called him about her furniture...delivery.......(deliver)
3. You should do your test..carefully...if you want to get good marks (care)
4.There was still no .......agreement..... On what to do next (agree)
5. Bell and Thomas Watson started experimenting the way of........transmitting........speech over a long distance (transmit)
6. This river is very....dangerous........ For swimmers (danger)
7.this old man is.....deaf......in one ear (deafen)
Kiến thức: Đọc hiểu
Giải thích:
Những gì có thể được suy luận về tảo?
A. Tảo xanh ít phổ biến hơn các màu khác của tảo.
B. Tảo là sinh vật quang hợp.
C. Chúng khác nhau về mặt hóa học so với các cây khác.
D. Chúng là những nhà sản xuất đường không hiệu quả.
Thông tin: In a process called photosynthesis, plants, algae, and some other organisms capture the sun's energy and use it to make simple sugars such as glucose.
Tạm dịch: Trong một quá trình gọi là quang hợp, thực vật, tảo và một số sinh vật khác thu năng lượng của mặt trời và sử dụng nó để tạo ra các loại đường đơn giản như glucose.
Chọn B
The weather is not beautiful all of the time. Perhaps you can remember a day when bad weather made you afraid. One kind of bad weather that scares many people is called a thunderstorm. This is what happens when there is a thunderstorm. First, you see a sudden flash of bright light. A few seconds later you hear a loud rumbling sound. This quick flash is called lightning and the loud sound is called thunder. Lightning is colorful , but it can cause serious problems. Lightning is electricity that is moving very rapidly. It may be moving between a cloud and the ground, between two clouds, or between two parts of the same cloud. The lightning heats the air around it. This hot air expands, or get bigger, and it causes the air to move in waves. The air waves pass you in a series, one after another. For this reason, you may hear many rumbles and not just one sound.
__T__ 29/ Lightning may move between a cloud and the ground.
__F__ 30/ Thunder is a very bright light in a thunderstorm.
__T__ 31/ When you hear thunder you may hear a series of loud sounds and not one
big sound. This is because the air waves pass one after another.
__T__ 32/ Lightning always moves rapidly.
I love a lot of subjects, but there is the only one subject I the most. It's absolutely English. English helps me a lot. For example, when I go to another countries, I can talk with the foreigns by English, I don't have to worry anything 'bout my language anymore. So, I always spend 2 hours to prace and study this subject at home every evening. And I can learn English at school three time a week, too. The special thing of this subject is there are thousands or may be millions of difficult words I've ever seen before. It makes me feel interesting about English. It's really really great if you know all of the English word, right? But it's also very difficult to perform, so to improve your English vocabulary, there's only one way, patient and keep prace memorize the words. Not lucky, it's the best way! However, I always love this subject because it also helps me to improve my personality - patient!!!
Tìm và chữa lỗi
1, He let the letter falling ->fall on to the floor
2, What do > did you use to do felt
3, Lan wish she can - >could buy a car
4, This is the first time she forgot -> has forgotten to give me a message
5, we reached the nearest village after walk -> walking for five hours
6,if i will -> bỏ have to make a difficult decision ,i will discuss it with my parent
7,what about use -> using pulic buses instead of motobikes
8,if you called -> call me i will explain the home work to you
9,if i have -> had a car i would drive it to work
10,my father dislikes to play -> playing volleyball in evening
11,she promises talking -> to take me to zoo with her next sunday
12,when we look -> looked out of the window ,we saw him
13,i heaven't heard from maria since -> for a long time
14,she wishes she is -> were the most beautiful girl in the world
15, he has waited for you for -> since 9o'clock this morning
TL :
Khí ni tơ nhé
HT
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sẽ ra khí ni - tơ