Why can t chemistry pass the exam, why is the chemistry exam always bad?

The key to the college entrance examination chemistry exam: combine watching and practicing and grasp the backbone.

1. Constantly make positive psychological cues.

Positive psychological cues can greatly improve the efficiency of revision, ensuring stable performance or even over-level performance. The following are for reference: Master several common psychological adjustment actions:

Take a deep breath, shift your attention, massage a certain acupuncture point, or do some other simple movements on a regular basis, etc.; Give up when you encounter a difficult problem to solve, and firmly believe that it will definitely not be covered in the college entrance examination questions (in fact, the probability of involving it is indeed very small); Choose some medium-difficulty or basic questions to build confidence.

2. Combine watching and practicing when reviewing.

It is recommended that you should look at the combination of practice when reviewing. Do comprehensive exercises every day during the college entrance examination, and you don't have to cover every subject every day. Please note that I am emphasizing the time of the college entrance examination.

For example, today from 9:00 a.m. to 11:30 a.m. do a set of language exercises, and 3:00 p.m

00 to 5:00 to do a set of science or literature comprehensive, tomorrow morning from 9:00 to 11:00

00 do a set of math exercises and a set of English from 3:00 pm to 5:00 pm.

In this way, in addition to maintaining the amount of training required for college entrance examination review, you can also adjust your biological clock to ensure a good mental state during the college entrance examination. When looking, we should also pay attention not only to see with our eyes, but also to record some feelings and experiences with a pen at any time, to think about the reasons for our problems at the beginning, and to return to the textbook when necessary, to clarify some concepts.

3. Highlight the main knowledge when reviewing.

The backbone knowledge in chemistry includes basic theories, basic concepts, knowledge of elemental compounds, chemical experiments, and several knowledge points in chemical calculations. One of the most taboo situations in revision is that I always feel that there are many knowledge points that I have not reviewed, and I am worried that I will get the college entrance examination when I see any question. This mindset is actually a sign of not having confidence in yourself.

I can responsibly say that after half a year of intensive training, students have seen all the question types that may appear in the college entrance examination. Taking a step back, there may be a new type of question in the college entrance examination, and it will never exactly match the question you see, and this probability is close to zero.

You can take a look at the articles in my blog, which will definitely be helpful to you.

Multiple choice questions... I hope you keep it up ... Observant!! IMPORTANT ...

As for the answer you said, because he is a subjective question that needs to be written... Therefore, the expression of the text, the completeness of the answer must be achieved... You have to answer all the knowledge points...

Inference questions, as the name suggests, are inferences. Pay attention to the method!

1.Read the questions first and pay careful attention to the description of the responses to the questions. If the precipitate is red, etc.

Write down possible reactions or reactants on scratch paper or test paper (you can omit it, you don't have to write the chemical formula completely, and match it to save time).

2.Combined with the block diagram of the problem, the reactants of 1 are substituted for inference. The basis for this is that you have to understand all the responses you have learned before.

3.Inference should pay attention to the direction, from the front to the back, from the back to the front. Extrapolation is carried out repeatedly.

Carefully memorize (not memorize) the [characteristics] of reactants and the [characteristics] of reactions, and slowly make them up, one by one, and the inference questions are all made up and tried out in this way.

Common substances and characteristics are preferred, and there are not many of them, just memorize them. Take a look at the previous questions and find out what substances are common.

Good luck. Come to Dalian Institute of Technology, the employment is leveraged!

It is recommended that you summarize your high school knowledge into a specific context of the response**. For example, the O element, you can summarize all your current reactions about the O element on a piece of paper, this kind of summary does not mean that the equation is simply copied, as long as the reaction is unfounded and the arrow is connected to familiarize yourself with the whole reaction context, you don't have to be afraid of inference, and then summarize the elements such as N, S, Cl, etc. Almost all of these equations have been memorized on the summary side, and if you don't summarize well, you can also find some tutorial books, many tutorial books have the overall context of this reaction.

In high school, my inference questions were generally good, and that's how I did it.

Starting from the properties of matter, remember the characteristic reactions of each substance, and inference can even react out, in fact, the discipline of chemistry is to remember more, of course, to remember the method, according to the horizontal and vertical laws of the periodic table of chemical elements, the properties of the same family are similar, the reaction is similar, and the transverse is the gradual reaction...Chemistry is actually a basic thing, it's not very difficult, as long as you have confidence, you will definitely be able to do well, I wish you a good exam...

Your basic knowledge is not good, you have to take classes seriously, provide it carefully, do your homework well, and read books well, so that you can do well in the exam.