Write a cause and effect essay about a teen social issue. Write about 150 - 180 words.

Writing cause and effect essays

To write an effective cause and effect essay, you should:

1. Introduce the problem and explain the purpose of the essay.

Today, many teenagers use social media every day. Some teens spend too much time on it, which can cause problems. This essay will explain the causes and effects of teens’ addiction to social media.

2. Give causes for the problem. For each cause, add supporting evidence (reasons, opinions, examples).

One cause of social media addiction is that the apps are designed to keep people using them for a long time. …

3. State the effects of the problem. For each effect, add supporting evidence.

One effect of social media addiction is that it can make teens feel unhappy or less confident. … 

4. Give a conclusion. Restate the problem and the causes and effects that you described.

In conclusion, social media addiction happens because of app design and the desire to be popular. It can cause low self-confidence and problems with real-life relationships.

Write a passage about what skills and knowledge different generations have or could share with each other. Write about 150 - 180 words.

Writing Skill: Giving supporting evidence in body paragraphs

To write good body paragraphs in essays, you should:

1. Begin with a topic sentence. This tells the reader the key point of the paragraph. 

2. Give supporting evidence for your topic sentence. First, give extra details and examples to support your main point. Then, give your opinion about it. 

Details – Older generations could teach me how to plan for the future. They have more experience than I do. 

Examples – My uncle ran a business for 30 years. He is really good at planning. 

Opinions – I think he could help me plan my future career path.

3. Finish with closing sentences. This restates the topic sentence using different words and gives a final thought on the main point. 

Therefore, I think I could learn lots of planning skills from the older generations. It would really help me at school.

Write a short article in the form of a list about what people should do to live longer and healthier for your school’s newsletter. Write about at least four tips about 150 - 180 words. 

Writing short articles in the form of a list (listicles)

1. Create a title. Use words to get readers' attention such as simple, free, easy, secret, etc. Make sure your title tells the readers exactly what to expect.

Example: 5 secrets to a longer life; 10 easy habits you should have to live longer and happier

2. Write a short introduction. Start with a question or an interesting fact about your topic.

Example:

Do you want to live past 90? If the answer is yes, read this article to find out what you can do to add years to your life expectancy!

3. Write your list points. Use the same style for all of them. For lists of things to do, start each point with a verb.

Examples:

Get plenty of sleep

Take care of your teeth

Have a healthy social life

4. Provide detailed information for each point. Include explanations, facts, or extra details to support your points.

Example:

Sleep is the time our body restores its energy and stores new information. Lack of sleep can lead to many health problems. We should sleep seven to eight hours a night.

5. Write a short conclusion. Summarize your main points or suggest an action in your conclusion.

Example:

The secrets to a longer life aren't very difficult. Pay attention to your diet, exercise, sleep, and happiness, and you'll find yourself enjoying your 100th birthday!

1. Prices are too high and they will remain _____ until the crisis comes down.
2. so
3. there
4. that
5. as  
6. The confusion ______ the discovery of the body made everybody lose track of time.
7. had caused
8. was caused by
9. had been caused by
10. caused by
11. I had to admit _____ completely forgotten our wedding anniversary.
12. to having
13. to have
14. I have
15. having
16. I think he's an idiot. ______ , he's not very intelligent.
17. Having my say
18. That is to say
19. To say nothing
20. Say do
21. You are the only person _______ I can talk.
22. to whom
23. with whom
24. that
25. which
26. I'm a teacher and ______ my husband.
27. is a teach
28. is he
29. so is
30. such is
31. Why on earth ______ have done such a thing?
32. you
33. you would
34. would you
35. if you
36. Rather than ______ about how tired she was, she got on with her job.
37. to complain
38. complained
39. she complained
40. complain
41. I couldn't stay any longer due ______ having enough money to pay for the hotel.
42. to not
43. not
44. for
45. to
46. Your child was a bit out of control at the party, to ______ mildly.
47. put it
48. say
49. take it
50. tell
51. I wish he _______ that. My mother was so annoyed.
52. didn't say
53. wouldn't say
54. hasn't said
55. hadn't said
56. ______ she meets, they take an instant liking to her.
57. Wherever
58. Whoever
59. Who
60. If

Ethyl butyrate là một ester tự nhiên thường có trong nhiều loại trái cây với mùi hương ngọt ngào đặc trưng, đặc biệt là mùi dứa chín. Để điều chế ethyl butyrate, người ta trộn 1,76 gam butyric acid với 1,28 gam ethanol sau đó thêm 5 ml H₂SO₄ đặc rồi tiến hành phản ứng ester hóa, thu được m gam ester.

a. Viết phương trình phản ứng.

b. Tính giá trị của m. Biết phản ứng đạt hiệu suất 81%.

Isoamyl acetate là một ester có mùi hương ngọt ngào, dễ chịu tương tự mùi chuối chín nên được sử dụng phổ biến trong ngành công nghiệp thực phẩm, nước hoa và mỹ phẩm. Để điều chế isoamylic acetate, người ta trộn 2,2 gam isoamylic alcohol với 2,2 gam acetic acid, thêm 10 ml H₂SO₄ đặc rồi tiến hành phản ứng ester hóa. Sau phản ứng, thu được m gam ester. Biết isoamylic có công thức hóa học như sau:

a. Viết phương trình phản ứng.

b. Tính giá trị của m, biết hiệu suất của phản ứng ester hóa là 70%.