Câu 1. Oxit bazơ nào sau đây được dùng để làm khô nhiều nhất?

A. CuO

B. FeO

C. CaO

D. ZnO

Câu 2. Cho dãy các oxit sau: FeO, CaO, CuO, K2O, BaO, Ag2O. Số chất tác dụng được vơi H2O tạo thành dung dịch bazơ?

A. 1

B. 3

C. 4

D. 5

Câu 3. Cho các oxit sau: K2O, CO, SO2, CaO, CO2, Al2O3. Số cặp chất tác dụng được với nhau?

A. 5

B. 3

C. 4

D. 2

Câu 4. Để làm sạch khí O2 từ hỗn hợp khí gồm SO2 và O2, có thể dùng chất nào dưới đây?

A. Ca(OH)2

B. CaCl2

C. NaHSO3

D. H2SO4

Câu 5. Có thể dùng chất nào dưới đây KHÔNG DÙNG ĐỂ làm khô khí O2 có lẫn hơi nước

A. SO3

B. SO2

C. CuO

D. P2O5

Câu 6. Dùng thuốc thử nào sau đây để phân biệt được 2 chất bột P2O5 và CaO

A. H2O

B. Dung dịch HCl

C. Dung dịch NaCl

D. CO2

Câu 7. Hòa tan hết 11,2 gam CaO vào nước thu được 400 ml dung dịch A. Nồng độ mol của dung dịch A là?

A. 0,25M

B. 2,5M

C. 0,5M

D. 5M

Câu 8. Phản ứng giữa hai chất nào dưới đây không tạo thành khí lưu huỳnh đioxit?

A. Na2SO3 và HCl

B. Na2SO3 và Ca(OH)2

C. S và O2 (đốt S)

D. FeS2 và O2 (đốt quặng pirit sắt)

Câu 9. Đâu không phải ứng dụng của lưu huỳnh đioxit:

A. Phần lớn dùng để sản xuất axit sunfuric.

B. Chất diệt nấm mốc

C. Chất tẩy trắng bột gỗ.

D. Chất giặt rửa quần áo.

Câu 10. Ứng dụng của canxi oxit là:

A.Sử dụng trong công nghệ luyện kim

B.Nguyên liệu cho công nghiệp hóa học.

C. chua đất, xử lí nước thải, sát trùng,…

D.Tất cả đáp án trên

III. Give the correct word formation 1- We like their ___________________ (friendly). 2- The ________________ between Vietnam and China is good. (friend) 3- They seem to be ________________. We dislike them. (friend) 4- There will be a ___________________ in this street. (meet) 5- We saw ___________________ girls there. (beauty) 6- Can you give me some ________________ the next flights to Florida? ( inform ) . VI. Give the correct word formation 3- Islam is one of the great world __________________. (religious) 4- She felt alone and _______________. (friend) 5- Quebec wanted some form of ______________ from the rest of Canada. (separate) 6- Mathematics is an ________________ subject at school. (compel) 7- The garden is ________________ with trees and flowers. (beauty) 8- They enjoy the ___________________ atmosphere here. (peace) 9- The ___________________ unit of currency is the Ringgit. (Malaysia) 10- In ___________________, there are other religions. (add) 11- They like Pho Bo. ________________, they enjoy Bun Bo. (add) 12- The ___________________ anthem of Viet Nam is sung. (nation) 13- There is an ________________ match between Vietnam and Lebanon on VTV3. (nation) 14- The language of ___________________ is Bahasa Malaysia. (instruct) 15- Ao Dai is the ___________________ dress of Vietnamese women. (tradition) 16- ___________________, Ao Dai is worn by women. (tradition) 17- First ___________________ can be misleading. (impress) 18- I enjoy working there, everyone is so ___________________. (friend) 19- The editor welcomes ___________________ from readers on any subject. (correspond) 20- Some people have no ___________________ beliefs. (religion) 21- By the age of eighteen he was completely ___________________ of his parents. (depend) 22- English and French are Canada’s ___________________ languages. (office) 23- America’s ___________________ production fell for the fourth successive month. (industry) 24- How can we make the subject more ___________________ to young people? (interest) 25- Many parents opposed the ___________________ of the classes into different sets (divide) VIII. Hoàn thành bức sau dựa vào những từ gợi ý Dear Minh. 1) Thank /you /much /flowers / you send / while / I/ be / hospital 2) They / beautiful / and / they / really help / cheer /up. 3) I /be/ come out / hospital / Thursday morning. 4) you / come over /my place / weekend / because/ I/ very bored / now 5) I / look / forward / see / soon

Choose the correct answer for each following question. 1. ______ I warned her about the quality of the product, she bought it as a souvenir. A. However B. When C. Although 2. We traveled to a craft village ______ we had spent two hours in the gallery. A. before B. after C. while 3. ______ she was knitting the hat, I was cooking dinner. A. After B. While C. Before 4. We got a discount ______ we had spent more than $200. A. as B. although C. when 5. I’ll take my foreign friends to the local market ______ they can see how people sell and buy things. A. so B. because C. so that 6. He ______ his name on a tree and left. A. created B. carved C. cut 7. How many balls of wool do you need to ______ that sweater?                                                                                        1. She's not only beautiful_________ intelligent. a. but also b. but c. however d. yet 2. I was very tired. ________ I determined to walk on to the next village. a. therefore b. however c. and d. or 3. You can come here either on Monday__________ on Friday. a. or b. nor c. both d. and 4. He had to act immediately; ________ he would have been too late. a. consequently b. nevertheless c. still d. otherwise 5. They said both he_________ I were to come. a. and b. but c. or d. so 6. The weather in Dalat is neither too hot in summer________ too cold in winter. a. or b. nor c. or else d. otherwise 7. Jane is beautiful and intelligent________. a. too b. so c. both d. moreover 8. Jane is beautiful and intelligent; ________ she's very kind. a. moreover b. however c. for all that d. on the other hand 9. He never works_______ he gains all the prizes. a. furthermore b. whereas c. but d. accordingly 10. The sun is shining and there are very few clouds; _______, I am sure it is going to rain. a. what's more b. hence c. thus d. nevertheless 11. Bill is in class 12, _______ John, who is a year older, is only in class 4. a. and b. whereas c. either d. nevertheless 12. You must leave at once, ________ you miss the train. a. however b. yet c. still d. otherwise 13. You need to get some job retraining. _______ it, you risk being laid off. a. If so b. If not c. With d. Without 14. Could I have rice_______ potatoes, please? a. but b. but also c. instead d. instead of 15. _______ his denial, we knew that he was guilty. a. Despite b. In spite c. Because d. And 16. John's family is very happy_______his being a warded a scholarship. a. because of b. if c. either d. nor 17. Graphite is a soft, slippery solid that is a good conductor of _______ hear and electricity. a. not just b. and c. both d. moreover 18. The lecture was _______ interesting and instructive. a. as b. either c. neither d. both 19. Both Mary and Allen_______Jean are going on the tour. a. as well b. as well as c. nor d. but 20. He likes travel, and_______ does she. a. too b. such c. so d. but

7. How many balls of wool do you need to ______ that sweater? A. do B. weave C. knit 8. She is ______ boats on the pillow covers. A. embroidering B. making C. casting 9. This type of wool is ______ into fabric which will make jackets. A. knitted B. give C. woven 10. They ______ these statues in bronze. A. moulded B. cast C. Wove

Bài 1: Có những khí sau: CO2, H2, O2, SO2, N2. Hãy chi biết chất nào đổi màu quỳ tím ẩm thành đỏ?

Bài 2: Có các oxit sau: K2O, MgO, SO2, CaO, CuO, CO2, N2O, N2O5, Fe2O3, P2O5, SO3. Trong các oxit trên, oxit nào là oxit axit, oxit nào là oxit bazơ?

Bài 3: Cho 12,4 gam Na2O hòa tan hoàn toàn trong 200 gam H2O. Tính nồng độ phần trăm (C%) của dung dịch thu được.

Bài 4: Viết phương trình phản ứng hóa học của nước với:

a. Lưu huỳnh trioxit b. Cacbon đioxit

c. Điphotpho pentaoxit d. Canxi oxit  e. Natri oxit

Bài 5: Có những oxit sau: Fe2O3, CaO, Al2O3, CuO, SO2, SO3, CO. Những oxit nào tác dụng với:

a) H2O        b) Dd H2SO4

Viết các PTHH của các phản ứng xảy ra?

1. All the students here should be …………in listening to our songs.

A. interested

B. insulted

C. proud

D. suspicious

2. Their first concert was held ……… .

A. last week

B. last month

C. last Sunday

D. last night

3. Can you tell us ………you started being interested in music?

A. how

B. why

C. where

D. when

4. The man was given a guitar by his……when he was accepted as a professor of this band.

A. relative

B. friend

C. wife

D. girl

5. The new song of the band is named “……blues”.

A. task

B. examination

C. love

D. life

So sánh mà ko dùng máy tính:\(\sqrt{12+6\sqrt{ }3}\) và \(\sqrt{9+4\sqrt{ }5}\)

So sánh mà ko dùng máy tính:√9 + 4√5 & √12 + 6√3