It depends on what the landlord's paper is for: is it a small paper requested by the teacher? Exam paper? For publication? Or a graduation thesis? The topic selection method of each paper is different.

A short paper is also about a chemical problem. It depends on what the teacher said recently, what was discussed in class, or what the teacher will say and what kind of discussion will be caused. It is best to combine the course with the classroom closely. Such as: carbocation, football olefin, cement preparation, etc.

The exam paper, that is, what percentage does the teacher say this paper accounts for in the exam score, or it will be replaced by the exam paper this semester. Such a paper needs to be written in close combination with the knowledge taught in the class this semester, as well as related events, current affairs and politics experienced this semester. For example, the explosion of nuclear power plants caused by the earthquake in Japan can start with new energy and environmental protection at the same time.

Published papers: divided into popular science papers and professional papers. Popular science papers can be written for various recent events related to chemistry. For example: Sudan red, rice essence, ZPT, etc. It is more likely to be published in this way. Professional papers are divided into: summary papers and experimental support papers. Generally speaking, a comprehensive paper needs to find new research directions and hot issues. But it is generally not easy to publish. You'd better find a teacher in Niu Yi, make a name for yourself and give more opportunities. The paper supported by experiments depends on a large number of experiments, and the paper only expresses how the experiment is going and how it is progressing. However, before publishing becomes possible, innovation is also necessary. Several topics raised by the landlord: generally speaking, new energy and new materials are hot spots, and finding new and suitable breakthrough points that keep pace with the times is good for the environment and life.

Graduation thesis, in order to graduate smoothly, it is recommended to listen to the teacher. Generally, the boss told me to go east, so I must never go west. Ahem! -_-! ! !

In addition, no matter what paper you write, in order to avoid losing face after becoming famous, the landlord should honestly check the information, do the experiment in a down-to-earth manner, and remember not to copy! ! !