Bài 1: Có những dung dịch muối sau: Mg(NO3)2, CuCl2.Hãy cho biết muối nào có thể tác dụng với :

a.Dung dịch NaOH

b.Dung dịch H2SO4

c. Dung dịch AgNO3 . Viết PT minh họa.

Bài2: Bằng phương pháp hóa học hãy nhận biết các lọ đựng các dung dịch bị mất nhãn sau: NaCl, KNO3, H2SO4, NaOH

Vẽ tranh chủ đề : Thế giới quanh em

III. Choose the correct form of verbs. 

1. My father (buy) a new car 2 months ago.

_____________

2. She usually (wash) her hands before meals three years ago. 

_____________

3. I (be) busy last night, so I missed a good film on TV.

_____________

4. Liz (not go) to the dentist yesterday morning.

_____________

5. My mother and Hoa (cook) in the kitchen when I came yesterday.

_____________

6. The students (enjoy) reading books in the library for the last ten years.

_____________

7. She (do) homework last night.

_____________

II. Rewrite these sentences. 

1. He is very lazy. He often gets bad marks. (so)

→ _____________________________________________________. 

2. I began to study English 5 years ago.

→ I have ________________________________________________.

3. I don’t have a computer. 

→ I wish ________________________________________________.

4. They recycle old plastic bags.  

→ Old plastic bags ____________________________________________.

5. It is very cold today 

→ I wish _________________________________________________.

6. They have worked in that factory since 2001

→ They started ____________________________________________. 

7. She enjoys going swimming 

→ She is interested in ____________________________________________.     

8. What about going to the cinema tonight?  

 → Shall we ________________________________________?

9. I often go to bed late. 

 → I am used ____________________________________________. 

10. It is interesting to go out with friends at weekends.

→ Going out ____________________________________________.

11. She went out, but she didn’t say a word.

→ She went out without ____________________________________________.

I. Use the correct tense or forms of verb in brackets.

1. I’m busy at the moment. I (redecorate) the sitting room.

________________________________________________

2. He (be) good to me since I (be) a little girl. I (hope) I (not forget) his kindness. 

________________________________________________

3. They still (live) in a small house now. But they (move) to big building as soon as they (finish) repairing it.

________________________________________________

4. All the old furniture (take) away last week.

________________________________________________

5. The lessons (write) by the students now.

________________________________________________

6. I (to surprise) by what you just (to tell) me.

________________________________________________

7. You (paint) your house at that time?

________________________________________________

8. I (send) a letter last week. I was very happy (receive) it.

________________________________________________

9. Car tires (recycle) to make sandals and floor coverings.

________________________________________________

10. There is something wrong with my printer. It needs (repair)

________________________________________________

11. I wish she (not have) to work so hard.

________________________________________________

12. We wish they (be) here now. 

________________________________________________