Is chemistry harder than physics? 5, Is chemistry harder than physics?

Chemistry is not more difficult than physics, and there are more things to remember in chemistry, which is known as English in science.

The main difficulty of chemistry is that the knowledge system is much more fragile than physics.

Let me give you an example, the law of physical buoyancy.

Let's talk about it. [You know: The buoyancy of an object in a liquid is equal to the gravitational force that displaces the volume of liquid. This experiment was done in the first physics class

Chemistry hypothesizes that this law of buoyancy is also being studied, but what happens to it? --

First, we found that macroscopic wood floats on water, and we concluded: the law of object floating: objects can float on the surface of water.

But we soon found out that there was something wrong with this law, the iron was thrown in and sank, and we came to the conclusion: the law of floating wooden objects: wood can float on the surface of water. Block of iron.

No. But then we discovered that plastic can float too, so we started to define the law of wood-like objects: wood-like objects can float on the water, but iron-like substances cannot.

But then we found that if we changed the shape of the iron block and made it into a large iron ball, or a boat, it could float, so we got a new law: iron-like substances can float on the surface of the water under certain conditions.

So what is wood-like and what is iron-like? Then we threw all kinds of things into the water to test it, and we accidentally found that the salt and the like were thrown in and he was gone, so we made another salt-like substance.

After tossing and turning for a long time, we still haven't found out what the real law of floating is.

The difficulty of chemistry, in my opinion, is the study of material change, and the knowledge points are too scattered, so that in the popular science stage (before high school), there are too many things to memorize, and at the same time, it is too trivial, so that I can understand it in class, but I don't know anything after class. This is very different from physics.

At the undergraduate level, chemistry or related majors begin to combine physics and mathematics to build bridges for the knowledge system, and this stage is extremely long (almost 2 semesters). Take climbing a mountain as an example, that is, in order to see the scenery, most of the time is spent on the road, and it is extremely hard in the middle.

Those who really saw the scenery and came into contact with the beauty of chemistry finally didn't feel that it was difficult for him, after all, he was only the last few people.

If you think about it, physics and chemistry are both difficult, and the difficulty of combining them can be imagined.

Extended Information: Physical chemistry is developed on the basis of the two disciplines of physics and chemistry. It takes a wealth of chemical phenomena and systems as the object, a large number of theoretical achievements and experimental techniques of physics, explores, summarizes and studies the basic laws and theories of chemistry, and constitutes the theoretical foundation of chemical science.

The level of physical chemistry reflects to a considerable extent the depth of the development of chemistry.

Introduction to the subject. Physical chemistry is a discipline that studies the properties and behaviors of chemical systems based on physical principles and experimental techniques, and discovers and establishes special laws in chemical systems.

With the rapid development of science and the interpenetration of various disciplines, physical chemistry and physics, inorganic chemistry.

There are boundaries in organic chemistry that are difficult to accurately demarcate in terms of content, which constantly produces new sub-disciplines, such as physical organic chemistry, biophysical chemistry, chemical physics, etc. Physical chemistry is also closely related to many non-chemical disciplines, such as physical metallurgy in metallurgy, which is actually the physical chemistry of metals.

What to study. With the rapid development of science and the interpenetration of various disciplines, there are more and more overlapping new fields between physical chemistry and physics, inorganic chemistry and organic chemistry, which have continuously derived many new sub-disciplines, such as physical organic chemistry, biophysical chemistry, chemical physics, etc. Physical chemistry is also closely related to many non-chemical disciplines, such as physical chemistry of metallurgical processes and marine physical chemistry.

The generally accepted research content of physical chemistry can be roughly summarized into three aspects:

1.The macroscopic equilibrium properties of a chemical system in terms of thermodynamics.

Based on the three basic laws, the equilibrium physical and chemical properties and regularity of macroscopic chemical systems (systems containing molecular orders of about 10) in gaseous, liquid, solid, dissolved and highly dispersed states are studied. Since equilibrium is premised, time is no longer a variable. The physical chemistry sub-disciplines that fall into this area include chemical thermodynamics, chemical statistical mechanics, solution chemistry, colloidal chemistry and surface chemistry.

2.The microstructure and properties of chemical systems are measured by quantum mechanics.

As a theoretical basis, the structure of molecules, molecular clusters and crystals, the spatial structure of atoms and molecules in the bulk phase of objects, the structure of surface phases, and the relationship and regularity between structure and physical properties are studied. The sub-disciplines of physical chemistry that fall under this category are structural chemistry, crystal chemistry and quantum chemistry.

And so on......

I think chemistry is difficult for the following reasons.

1.The method of learning chemistry is very important, and if you don't master it, the more you learn, the slower you learn, and then you want to give up. (But I'm really a chemical scumbag, and I can't tell you how to learn it.) ）

2.The teacher's teaching style and influence (I only dare to speak for myself personally!) ）

3.Talent blessing (see below for details of my comparison with the representatives of the high school chemistry class below).

A little funny and very sad personal experience is as follows:

I started chemistry in junior high school, and I wasn't very repulsive at first. My attitude towards learning is positive.

But! One day, my chemistry teacher suddenly brought a little speaker that could be pinned to his waist...The teacher's voice is not small, and it is very thin and high-pitched. You can imagine....

I (a 166-year-old Lu child) sat gloriously in the first row closest to the teacher, and my eardrums have been tormented every day since then. The teacher often stepped down from the podium and leaned against my desk, and I remember that my ears were only a meter away from the trumpet...

I don't know if you have ever felt the feeling of over-current......Anyway, I couldn't hear what was being said at all, and I kept getting goosebumps, and then the muscles of my whole body would be agitated every once in a while. I really feel sorry for myself when I think about it, and I can't listen to the class at all.

Second, the teacher's teaching method is really important. I sometimes think that chemistry is actually a liberal arts subject in science...

Because there are too many to memorize, my junior high school teacher is very fast, and the experiment is very fast, I feel that she has been assume We all understand, and then I assign homework, and then I take a quiz, and then I take the exam....It's such a little loop.

Later, I had a psychological fear of chemistry, both in class and in exams.

In fact, if you think about how many years the teachers' minds have been immersed in chemicals, my little brain can't react at all. And then I often got so angry when the teacher was in class (because I couldn't understand anything) that maybe at that age my brain didn't have the cells and nerves to learn chemistry, ......

Anyway, I took a queen male small book every day, memorized it, and copied the wrong book, and I studied very hard.