Phản ứng hoá học xảy ra trong trường hợp nào dưới đây không thuộc loại phản ứng nhiệt nhôm?

A. Al tác dụng với Fe₃O₄ nung nóng

B. Al tác dụng với CuO nung nóng

C. Al tác dụng với Fe₂O₃ nung nóng

D. Al tác dụng với axit H₂SO₄ đặc, nóng

mk tuần sau ms thi nè T^T

Lớp 7 có mặt !!! :P

Mô tả nào dưới đây không phù hợp các nguyên tố nhóm IIA?

A. Gồm các nguyên tố Be, Mg, Ca, Sr, Ba.

B. Tinh thể có cấu trúc lục phương.

C. Cấu hình electron hóa trị là ns².

D. Mức oxi hóa đặc trưng trong các hợp chất là +2,

1.She /not have / any friends / Ha Noi
→ She doesn't have any friends in Ha Noi.
2.I / live / grandparents / 21 Le Lai street
→ I live with my grandparents at 21 Le Lai street.
3.Nga / Lan / not visit / grandfather / next week
→ Nga and Lan won't visit their grandfather next week.
4. What /Mai / play /free time?
→ What does Mai play in her free time ?
5.Tai / have / small party / birthday / tomorow
→ Tai will have a small party on his birthday tomorrow.
6.Her father / grow /vegetables /farm
→ Her father grows vegetables on his farm.
7. This armchair / comfortable / that one
→ This armchair is more comfortable than that one.
8.My TV / mordren /this town
→ My TV is the most morden in this town.
9.Nam / An / listen / radio / at present
→ Nam and An are listening to the radio at present,
10.He / be / different / father
→ He is different from his father.
11. Students / often go /canteen / luchtime
→ Students often go to canteen at lunchtime.
12.You / learn /how / sing / song / play / piano / music
→ You learn how to sing songs and play the piano in Music class.
13.Your father / watch / news /TV ?
→ Does your father watch news on TV ?
14. Eat / talk / friends / be / most common way / relax /recess / many countries
→ Eat and talk with friends is the most common way to relax at recess in many countries.

1. You / be / home / dinner / tonight ?

=> Are you at home for dinner tonght ?

2. How far / be /it / garden / farm ?

=> How far is it from the garden to the farm ?

3. The movie / start / in / 10 minutes

=> The movie starts in for 10 minutes.

4.Those books / back / library / be / French

=> Those books in the back of the library are in French.

5. Which / most / suitable house / Mr. Lam / and / family

=> Which house is the most suitable house for Mr. Lam and his family ?

kt lại nha ^^

1. fruit : uncountable nouns

2. DVD : countable nouns

3. snack : uncountable nouns

4. glasses : countable nouns

5. gasoline : uncountable noun

Ể ~ đăng ảnh chi z

Cho các hợp chất hữu cơ sau: etyl axetat, anilin, vinyl axetat, metylamin, glyxin. Trong các chất đó, số chất làm mất màu nước brom ở nhiệt độ thường là

A. 3

B. 4

C. 2

D. 5

Mk cx cần đề cương ai có hong T^T