I. Sentence building. 1. It/ easy/ answer/ these question. ………………………………………………………….. 2. Your writing/ difficult/ read. ->……………………………………………………… 3. It/ impossible/ understand/ his theory. ->………………………………………………………….. 4. The girl/ talk/ to Phan / Austalian …………………………………………………………….. 5. It/ difficult/ learn/ Japanese. à ……………………………………………………………………….. 6. The watch / make/ of gold / 1000 dollars. ………………………………………………………………………. 7. The boy /kick/the ball / An. ……………………………………………………………………… 8.The girl/ play/ the piano/ Mai ……………………………………………………………………. II. Write the sentences 1. May I sit this chair ? -> Would you mind ……………………………………………………..? 2. People break the glass into small pieces. The glass………………………………………………………………? 3.Hoa do her homework everyday. Her homework…………………………………………………………….? 8.They speak English all over the world. English…………………………………………………………………? 9. your sister clean her room everyday. Her room……………………………………………………………..? 10. Nam lived in the country in 2021 -> He has ………………………………………………………..? 1. They will buy a new house in HCM city next month. -> A new house …………………………………………………….. 2. Mr Ha will live a tall building next week ->……………………………………………………………………… 3. Could you open the door ? -> Would you mind………………………………………………..? 4. Can you take me to the hospital ? -> Do you mind ………………………………………………….….?

CÂU 1: LẬP PTHH CÁC PHẢN ỨNG SAU

1/ C02 + Ca(0H)2 CaC03 + H20

2/ Na + H20 Na0H + H2

4/ Al203 + HCl AlCl3 + H20

5/ P + 02 P205

6/ Fe0 + HCl FeCl2 + H20

7/ Fe203 + H2S04 Fe2(S04)3 + H20

8/ Na0H + H2S04 Na2S04 + H20

9/ Ca(0H)2 + FeCl3 CaCl2 + Fe(0H)3

10/ Fe(0H)3 + HCl FeCl3 + H20

11/ N205 + H20 HN03

12/ Al203 + H2S04 Al2(S04)3 + H20

CÂU 2: LẬP PTHH VÀ CHO BIẾT TỈ LỆ SỐ NGUYÊN TỬ, SỐ PHÂN TỬ CÁC CHẤT CÓ TRONG PHƯƠNG TRÌNH

1/ CaO + CO2 CaCO3

2/ Al2O3 + HCl AlCl3+ H2O

3/ KOH + AlCl3 KCl + Al(OH)3

4/ Mg + HCl MgCl2 + H2

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