Câu 1: Hoàn thành các PTHH sau:

1. Na​​+​O2​​--Ò​…….

2. K​​+​Cl2​​--Ò…..

3. BaO​​+​H2SO​​--Ò ……+ H2O

4. Al2O3​​+​HNO3​​---Ò …..+ H2O

5. …..​​+​O2​​---Ò​P2O5

6. ……​​+​Cl2​​---Ò​MgCl2

7. NaOH​​+   HCl ​​---Ò​….​+​H2O

8. CuO​​+​HCl​​---Ò ……+​H2O

9. Al2O3​​+​H2SO4​​---Ò​…..​​+​H2O

10. Fe2O3​​+​HCl​​---Ò​….​+​H2O

CÂN BẰNG PHƯƠNG TRÌNH HÓA HỌC

1. Na2O​​+​H2O ​​--Ò​NaOH

2. K2O​​+​H2O​​--Ò​KOH

3. BaO​​+​H2O​​--Ò​Ba(OH)2

4. N2O5​​+​H2O​​---Ò​HNO3

5. P2O5​​+​H2O​​---Ò​H3PO4

6. Cl2​​+​H2O​​---Ò​HCl​​+​HClO

7. SO2​​+​Br2​​---Ò​H2SO4​​+​HBr

8. K2O​​+​P2O5​​---Ò​K3PO4

9. Al2O3​​+​HCl​​---Ò​AlCl3​​+​H2O

10. Fe2O3​​+​H2SO4​​---Ò​Fe2(SO4)3​+​H2O

11. ZnO​​+​HNO3​​---Ò​Zn(NO3)2​+​H2O

12. Na2O​​+​H3PO4​​---Ò​Na3PO4​+​H2O

13. CO2​​+​NaOH​​---Ò​Na2CO3​+​H2O

14. P2O5​​+​Ba(OH)2​---Ò​Ba3(PO4)2​+​H2O

15. KOH​​+​H2SO4​​---Ò​K2SO4​​+​H2O

16. K3PO4​​+​MgSO4​---Ò​K2SO4​​+​Mg3(PO4)2

17. Al2(SO4)3​+​Ba(NO3)2​---Ò​Al(NO3)3​+​BaSO4​

18. Na​+​H2O​---Ò​NaOH​+​H2

19. Fe ​+​Cl2​---Ò​FeCl3

20. Cu​+​O2​---Ò​CuO

21. Fe​+​O2​---Ò​Fe3O4

22. Fe​+​O2​---Ò​Fe2O3

23. H2S​+​O2​---Ò​SO2​+​H2O

24. FeS​+​O2​---Ò​Fe2O3​+​SO2

25. Mg​+​HCl​--Ò​MgCl2​+​H2

26. Al​+​H2SO4​---Ò​Al2(SO4)3​+​H2

27. Zn​+​H3PO4​---Ò​Zn3(PO4)3​+​H2

28. Mg​+​Fe2(SO4)3​--Ò​MgSO4​+​Fe

29. Fe3O4​+​C​---Ò​FeO​+​CO2

30. Fe2O3​+​Al​--Ò​Fe​+​Al2O3

31. Fe3O4​+​H2​--Ò​Fe​+​H2O

32. Fe3O4​+​HCl​--Ò​FeCl2​+​FeCl3​+​H2O

Complete each blank ò the following sentences with ONE suitable word.

1. Every house in Da Nang há a fronyard and a .........

2. One think I don't like about the city is that the air is .......... because ò the smork from factories.

3.The weather in Hue is hotter than ........ in Ha Noi.

4. The street in Ho Chi Minh City are busy and crowded ............ a lot of motobikes.

5. .......... leftand take the second ...... on your left. Go straight and it's in ...... of you.

6. The houses, shops, and pagodas in Hoi An are older than ....... other cities in Viet Nam.

7. It is very .......... that your live near your school.

8. Hoi An is a .......... city with a lot of old houses, shops, buildings and theatres, ect.

9. Can you tell us the .......... to " Chua Cau ", please ?

10. There is a .......... of King Ly Thai To in a small park near Hoan Kiem Lake in Ha Noi.