Some conjectures about microscopic physics for high school students. Know how to advance

Your question is not as simple as it is ordinarily simple!

1) Molecular velocity only characterizes the kinetic energy of the molecule, and there is also potential energy between the molecules. The temperature of an object is a representation of the kinetic energy of the molecule. The same object, its liquid state can be hotter than the gaseous state!

When we heat a solid, we generally go through a liquid-to-gas transition. In this process, the intermolecular forces have been transformed into attraction, and the energy transported is not only to the kinetic energy of the molecule, but also to the potential energy. Therefore, it is impossible to judge the state of an object by its temporary velocity.

The state of matter of an object is determined by its internal energy to determine its molecular spacing, which in turn determines its state of matter!

2) The intermolecular force is the category of electromagnetic force, which is the manifestation of the interaction between electric and magnetic fields. Both the attraction and repulsion force are exhibited, and both decrease with the increase of the molecular spacing, but after the molecular spacing exceeds an order of magnitude (it seems to be a negative 10th meter of 10), the comprehensive performance is gravity, and less than this order of magnitude is the comprehensive performance of repulsion!

3) In the classical physics category (i.e., without considering the relativistic effect, without considering the relationship between mass and energy), the sum of the kinetic energy and potential energy of any object, regardless of the state of motion, is only related to the state of matter and temperature! The kinetic energy of the motion of the object in the macroscopic is interpreted in the microscopic as the part of the energy of the directional movement of the molecule, and is not included in the kinetic energy and potential energy of the molecule!

4) What about this object, how? I ask you, why is there an earth? Why is there a universe?

With the development of physics to the microscopic realm of molecules, the phenomena seen can only be explained by energy levels at present, and it is not denied that there can be better explanations in the future - let's assume that the better explanation is called "level energy", do you have to ask why there is "level energy" at that time?

5) According to the mass-energy equation derived from Einstein's theory of relativity, we can think of mass as a container full of energy, and how much mass there is, how much energy there is. If the speed of matter reaches the speed of light, then its mass (or energy) is infinite, which is impossible, so the speed of light is the ultimate speed!

What is the energy level structure I forgot about this.

As for matter and energy, I think they can be converted into each other, like e=mc means that matter can be converted into energy, such as nuclear reactions, but if energy is converted into matter, it is a creation, and I don't know if this is true.

1. The change of the state of matter depends on the distance between the molecules, the solid makes the molecular motion increase violently through heating, and the molecular spacing increases into liquid, and the liquid state continues to heat, the molecular spacing continues to increase, the range of molecular motion increases, and the object becomes gaseous.

2. If there is a charged body, the charged body is still moving, there is an electric field and a magnetic field, and there is a Coulomb force, Lorentz force, etc., which are collectively referred to as the result of electromagnetic force.

3. The kinetic energy of molecules should be distinguished from the irregular movement of molecules in the interior of matter and the macroscopic movement of matter. For example, the velocity of an object is zero, and the molecules inside the object still do irregular work, which is determined only by temperature and has nothing to do with other factors.

The first is an eternal principle: listen carefully.

It's important to listen carefully, but don't stare at the blackboard for 45 minutes, it will only make you dizzy and only understand very little of the content. Listen selectively, first of all, the example questions, the example questions are the best interpretation of the formula (practice makes true knowledge), the example questions are understood, and the formula can generally be understood. In addition, if you understand the deformation formula of the formula, e.g., e=f q, then you must also master f=qe and q=f e.

If there are no examples, you should listen carefully to the teacher's explanation of the formula. In short, formulas are the basis of physics, and if you don't understand formulas, everything is nonsense.

After that, it's one thing to understand the formula, it's another thing to use it, and understanding doesn't mean it will work. So you have to do more questions, you may not be able to do it at first, you can look at the explanation of the answer, and after you understand it, you can do it yourself, and when you do the question smoothly, you will also learn it.

In addition, I believe that not only physics but also science is made by doing questions, and only doing questions is the fundamental way to improve your grades, so it is important to do more questions.

I'm a science student in my third year of high school, and maybe what I mentioned can help you a little:

In order to learn physics well, first of all, a more diligent student learns it, because she needs to think carefully about each question, find out what the main points of each question are, and what knowledge points are examined. Physics can also be said to be lazy students to learn, it does not need to be memorized, because memorization is useless, physics problems as long as you figure out one type of problem, then your type of problem is almost not a problem, this is called"All-in-one".

If you want to learn physics well, you actually have to work hard, and you must preview before the course! Find out what you are doubting and go to the lecture with the questions. This is the key to learning physics well, and you must listen carefully in class and follow the teacher's train of thought.

I believe that if you really listen carefully, the practice after class will not take much effort, and if there is still confusion of concepts, it will be! Be sure to look at your notes, which is another crucial point: you have to take good notes in class.

My physics notes have always made me feel proud! After class, you have to complete your homework by yourself, and if you don't know how to do it, you can discuss it with your classmates, because everyone has an angle to think about problems, and you can ask teachers and classmates when you can't think of it. Teachers should also listen carefully when teaching exercises, see what you are doing wrong, and make a good record!

Before each exam, you can look at some important concepts, formulas, and exercises that are wrong, and others that are not necessary!

In fact, there are not many knowledge points in physics, and there are so many tests that come and go, so every time you make a mistake in the exam, you must understand the knowledge points that you have not been able to review in time, and the same is true when doing exercises, first of all, you must memorize and understand all the basic formulas. Then it's easy to memorize and understand the formulas that have been drawn out.

There don't seem to be many formulas in physics, especially the basic ones, read the explanation of the textbook several times, and understand it in connection with the test questions. (It's not okay to not connect with the test questions, and you may not know how to use it when you understand the surface to do the questions).

The teacher only plays the role of a guide, to adapt to the teacher, even if you don't like the teacher's teaching methods. If you know what you don't know through exams or questions, you just need to listen carefully when the teacher speaks. The teacher feels that he is very good at knowledge points, listen to it casually, and the teacher is playing tricks, don't ignore him.

Personal feeling physics questions are based on understanding the knowledge points and formulas.

Do more questions, practice makes perfect, I don't support the tactics of the sea of questions, but if you want to learn well, you must do more questions, and you have to grasp this yourself.

Look for a ...... between the physical definition and real lifeSometimes there are unexpected gains.

First of all, you must love physics and have an interest in learning physics.

As the saying goes, "love is half of what you will", the interest in learning physics is the most practical internal motivation to promote students to learn physics in depth, students with a strong interest in learning will learn physics with relish, and will actively participate in the activities of learning physics, which will help to overcome the difficulties in the process of learning physics, through the observation of physical phenomena, the novelty of experiments, and the understanding of physics and solving practical problems, so as to further make students have a strong interest in learning physics.

Linking theory with practice, and using the knowledge learned to explain the physical phenomena around you.

Deepen your understanding of physical concepts.

Emphasis on experimentation. Learn how to study physics. For example, the control variable method, etc.

Be familiar with physical formulas, use them flexibly, do more questions, and practice more. Find some classic question types!

There are quantum physics theories, electron cloud models, energy chemistry theories, quark theories, antimatter theories, etc.

There's something in the quark...

Do the questions appropriately and practice repeatedly, but do not advocate the tactics of the sea of questions. The key is that every time you finish the question, you must learn to analyze by yourself, how each formula comes from, why you use these formulas, and what is the test point of the question that can be reflected in the first time next time you encounter a similar question. Secondly, organize a set of wrong questions by yourself, after three years of high school, I believe that your wrong question set is already densely packed, and it is all questions that you are easy to ignore or not thoroughly understand from the first year of high school to the third year of high school, and it will be of great help to you in the college entrance examination to see more!

I wish you the title of the gold list of the college entrance examination!

The difficult manual is very good, and then you can do the questions after reading thoroughly, and you can also buy a problem solving dictionary, the question type is very complete, and you can do more questions.

Mathematics and physical sciences are divided into universities belonging to different areas of specialization according to the style. Mathematics faculties, such as Mathematics and Applied Mathematics, Biased Theory, as well as Information and Computing Sciences, Mathematics and Applied Mathematics (professional chapters), focus on applications like the professional colleges, while the latter is operational, it not only requires you to master all the subject knowledge of theoretical mathematics (mathematical analysis courses, classes of advanced algebra, calculus, lessons in real functions, etc.), but also needs to master certain computer language subjects such as (C language, C + language, data structure courses, etc.), Emphasis is placed on the application of mathematical methods to computer operations, computer language, and mathematical thinking. Generally, it can be divided into physical experimental physics and normal, more basic courses in the direction of optical physics, thermodynamics and statistical physics, quantum physics, general physics experiments, etc., such as the direction of direction, which can be selected according to one's own interests and professional knowledge.

Mathematics and physics are both sciences, but they are different fields of study at university. For example, the Department of Mathematics has a major in mathematics and applied mathematics, which is more theoretical, and information and computing science (which is a branch of mathematics and applied mathematics), which focuses on application, although it is a major in the School of Science, but the latter has strong practical operability, it not only requires you to master all the theoretical subject knowledge of mathematics majors such as (mathematical analysis courses, advanced algebra courses, calculus, real function courses, etc.), but also need to master certain computer language disciplines such as (C language, C++ language, Data Structures Course, etc.), emphasizing the application of mathematical methods to computer operations and the realization of mathematical ideas through computer language. For physics majors, they are generally divided into experimental physics and normal physics, and the basic courses include optical physics, thermodynamics and statistical physics, quantum physics, general physics experiments, etc., which can be selected according to your interests and strengths.

It's all about a point, and you don't necessarily understand it.

Don't worry too much! It can be determined according to your child's own situation, if your child's self-learning ability is very strong, then you can let him do more questions at home, if your child is not particularly smart or has a strong desire to explore knowledge, then it is recommended to enroll in cram schools, ask the teacher more, I believe it will be improved!

I hope it will be adopted, thank you.

Actually, learning still depends on interest, boys are still interested in physics, if you give him a promise, let him learn independently, than to go to cram school, there is also mathematics, physics and chemistry are generally sea of questions tactics, it is very helpful to do more questions.