Bài 5: Đốt cháy hoàn toàn 8,8 gam hiđrocacbon Y mạch hở người ta thu được 26,4 gam CO2 và 14,4 gam nước.
a) Xác định CTPT,CTCT của A. Biết MA= 44.
b) A phản ứng với chất nào sau đây: Br2/dd; Cl2/as.Viết PTPƯ nếu có

Bài 4: a/ Tinh chế CH4 có lẫn  khí C2H4
            b/ Tinh chế CH4 có lẫn CO2, C2H4

Bài 3: Phân biệt các chất khí không màu sau:
a) CH4, H2S, C2H4 b) CH4, CO2, C2H2

Bài 2: Hoàn thành các PTHH và ghi rõ điều kiện phản ứng( nếu có): 
a) C2H4    +   Br2                    ?
b) NaHCO3   +   ?               NaCl +  ? + ?  
c) C2H2   +   ?                 CO2   +   H2O             d) ...........                 C2H2  +  H2
e)  C2H4    +     ?                    CO2 +  H2O            
f) Ca(HCO3)2  +  ?               CaCl2 + ? + ?
g) C2H2  +   Br2                 ?
h)   CH4    +    Cl2                  ?  + ?

II/ Supply the correct form of the word or verbs in parentheses to complete each sentence
1. Ivan can write almost like a native speaker, but his _______________ is terrible. (PRONOUNCE)
2. On the ISS, _______________  have to attach themselves so they don’t float around. (ASTRONOMY)
3. If you spoke more slowly, he _______________   you. (UNDERSTAND)
4. They _______________  in Scotland for ten years. Now they live in London. (LIVE)

PART A: USE OF ENGLISH
I/ Underline the word or phrase that best complete each sentence or do as directed
1. If I didn’t have exams next week, I ____ camping with you this weekend. (will go/ will have gone/ would go)
2. The Earth, ____ is the fifth largest planet in the solar system, is the third planet from the Sun. (whom/ which/ who)
3. The 27-year-old Soviet cosmonaut became the first person to eat and drink in ____ (weight/ weightless/ weightlessness)
4. When he woke up this morning, his mother ____ breakfast. (has already prepared/ had already prepared/ is preparing)
5. Hung: What should I do to improve my English writing skill, Minh?
Minh: I think you should ____ as much as possible. (write essays/ imitate English speakers/ take spoken tests)
6. The Earth needs ____ days to orbit the Sun. (365.3/ 356.5/ 536.3)

PART A: USE OF ENGLISH
I.Choose the word or phrase that best completes each sentence or do as directed
1. Most students learn English as (official/ second/ global ) language
2. Sound symbolism means that we often (judge/ guess/ imagine) the meaning of a word from it sound
3. The spaceship was (orbited/built/ launched) last week
4. The English language mainly owes its (great/ dominant/ massive) status in the world to two factors
5. Can you talk more about the parabolic flights (who/ X/ when ) you took for training
6. The height of something above the sea is (microgravity/ altitude/ attitude)

II. Read the passage and fill in each gap with ONE suitable word from the box
translate                      matter                      meaning                    mistake
If you don’t know what a word means, try to guess the (1)..................., or look up the word in your dictionary. All foreign speakers have an accent, but that doesn’t (2).................. To make your pronunciation better, listen to English speakers and try to imitate. Don’t worry if you make mistakes or don’t try to correct a (3)........................ That’s normal! It’s often useful to (4)...................... words from one language to the others, but it’s best when you can start to think in the new language.

PART B: READING
I. Read the text, then answer the questions
The Earth, our beautiful home planet, is the only astronomical object to accommodate life as we know it.  Scientists believe the Earth was formed approximately 4. 5 billion years ago.  It is the fifth – largest planet in our solar system.  Its equatorial diameter is about 12,074 kilometres.  The Earth is the third – closet planet to the sun.  The distance from the Earth to the sun is roughly 149,600,000 kilometres.  It takes 365. 3 days for the Earth to orbit the sun, and 24 hours to rotate on its axis. The surface temperature ranges from -88 to 58oC.  Nearly 70% of the Earth’s surface is covered by ocean, which has an average depth of about 4 kilometres.  In 2015 it was estimated that 7. 3 billion humans are living on Earth

1. Is the Earth the fifth largest planet in our solar system?
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2. What is the distance between the Earth and the sun?
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3. How many planets are there between the Earth and the sun?
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 4. When was the Earth estimated that 7.3 billion humans are living on Earth?
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III. Use the correct form of the words in brackets to complete the sentences
1. Computer offer a much greater degree of. . . . . . . . . . . . . . .  in the way work is organized (flexible)
2. My English is a bit. . . . . . . . . . . . . . . . .  (rust)
3. He had been an. . . . . . . . . . . . . . . . . . . .  salesman before he decided to set up his own business (experience)
4. Trainees have to become familiar with crew activities in stimulated . . . . . . . . . . . . . . . . .   in order to perform spacewalk (gravity)