I'm so sad. I'm really a rare flower. I hover around 80 in Physics, but only 30 in Chemistry. What should I do?! Chemistry has been a trap for me for so long! It's the subject I'm most weak in right now! No matter how hard I study other subjects, it can't make up for the points I lose in Chemistry! Although it's like a toad wanting to eat a top high school, I still want to give it a try. I feel like as long as I do well in this subject, I still have a chance. Please, experts, help me. I'm a beginner right now. I haven't memorized the valence properly, let alone the equations. I don't understand how to balance them. Is the periodic table really important? Do I need to memorize it? Which parts should I memorize? Why do some symbols have numbers at the lower right corner? Should I memorize them, or should I calculate them? What are cations and anions? What properties do molecules and atoms have? Everyone, please help me. I would be extremely grateful. \ \ ╯ ╰\ ● ●\ " ^ "
Cramming chemistry for the high school entrance exam at the last minute, how should I cram? Asking the top students.
Replies (49)
Isn't the full score for physics 80... As for chemistry... you just need to memorize more equations... Judging by it, the classmate seems to know nothing about chemistry... Then you'll have to find a teacher, after all, it's only one year's content, and it can be made up in a week.
Physical chemistry full score is 100 points, English, Chinese, and mathematics full score is 120 points, politics and history full score is 60 points... Can't you memorize chemical valence like a poem?
Seize the hearts of beautiful women, offer interest subsidies over thousands of acres, and supply silver, platinum, and gold together?
I always scored 40 in the second year of junior high, but in the third year, when I got a new teacher, I scored 86 on the first unit. It's really possible for you to improve. Which parts do you not understand well?
OP, you need to be patient when cramming! Chemistry is a process of accumulation, but if you want to speed up learning, it's also possible! First, pay attention in class to the teacher's lectures, then find someone who studies well, or a teacher, to organize a knowledge framework, and then practice exercises according to the framework, memorize formulas, six formulas a day, first write and match them yourself, then memorize them. Doing more exercises can help you understand!
One week?! Is that really possible? Our teacher is very irresponsible. Is it possible for me to catch up by self-studying?
Thank you, but I don't quite understand what the teacher is saying. My foundation isn't solid yet. I want to pass. What should I do?
Don't be so lacking in confidence! Chemistry is interconnected, so think more, and after finishing a problem, consider what other knowledge could be tested!
Difficult calculation problems? Which aspects of circuits? Calculation problems or experimental problems?
We can't understand our chemistry teacher's Mandarin at all... Now we've kind of gotten used to it... but. Now we can't understand the content again...
It is generally multiple-choice and fill-in-the-blank questions, with some basic points from the experimental questions.
If I study carefully on my own with this reference book along with the textbook, is it possible to improve? Are there any methods or anything like that? What are the key points, and do I need to memorize the experimental phenomena?
Although I'm not good at chemistry either, I asked someone who is good at chemistry, and they said you need to memorize those reaction equations.
Ask your classmates, chemical valence also has mnemonics. Actually, you just need to remember the simple valences; the complex ones are usually what you're asked to calculate! The simplest way to determine valence is to look at the number of electrons outside the nucleus. For example, sodium is element number 11, its electron configuration is 2.8.1, so its valence is one. The principle is that elements want to form a stable structure! 2 and 8 electrons are considered stable structures, but in junior high chemistry, only the short periods are studied, so except for hydrogen and helium, a stable structure generally has 8 electrons.
It seems that your basics are solid, but when the questions test difficult points, you are helpless. You need to do more exercises. Everything else is just theoretical talk. If you don't understand something, ask the teacher or look it up on Baidu. For example, multiple-choice and fill-in-the-blank questions often test short circuit and open circuit fault problems. Are you clear on these? Do you understand series voltage division?
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