When is the conversion of energy in the law of conservation of energy used for chemical energy, mech

Look at the name of that machine.

For example: generators. Generating electricity is converted into electricity. It is the conversion of mechanical energy into electrical energy.

Motor. Electricity, electricity is the conversion of electrical energy into xx energy; Motion, that is, mechanical energy. So electrical energy is converted into mechanical energy, and so on.

In fact, if you think about it carefully, the several energies you have listed can all be converted into each other.

Transformation of energy: Energy can neither be generated nor disappear, energy conversion refers to the transformation from one form to another or from one object to another, except that the universe can make energy disappear.

Conservation Law: The first law of thermodynamics states that the total energy in a closed system remains constant. Generally speaking, the total energy is no longer just the sum of kinetic energy and potential energy, but the total amount of stationary energy, kinetic energy and potential energy. 1. The Law of Conservation of Energy:

Energy is neither created nor disappeared out of thin air, it can only be transformed from one form to another, or transferred from one object to another, and its total amount remains the same in the process of transformation or transfer.

The law of conservation of energy tells us that various forms of energy can be converted into each other, and in all these transformations, energy is conserved. The first law of thermodynamics, based on Joule's experiments, is actually the law of conservation of energy when internal energy is transformed from other energies.

As a result of the law of conservation of energy, the first type of permanently moving machine cannot exist (such a machine does not consume any energy, but can do a steady stream of external work).

2. Conversion of motion energy and conservation law solution method:

The law of conservation of energy is one of the universally applicable laws in nature, and it is one of the powerful laws for the study of natural science. The mathematical expressions for the law of conservation of energy are generally of two types: constant and incremental

1. Constant formula: e1 e2, that is, the sum of the energy of each form (or each object) before transformation e1 is equal to the sum of the energy of various forms (or each object) after transformation e2.

2. Incremental: δe increases and δe decreases, that is, the increase in the energy of some forms (or some objects) is equal to the decrease in the energy of other forms (or other objects). When the problem does not involve all the energy involved in the transformation or all the objects involved in the energy transformation, the expression e1 e2 or δe increases and decreases δe with the energy conversion efficiency.

When applying the law of transformation and conservation of energy to solve the problem, the key is to analyze the form and direction of energy transformation, what forms of energy participate in the transformation in the problem, and what kind of work process does their transformation correspond to. At the same time, it is necessary to be good at applying mechanical knowledge such as kinetic energy theorem, the law of conservation of momentum, Newton's laws of motion, etc., to analyze the process of energy conversion and the process of doing work. Secondly, it is necessary to choose the mathematical expression of the law so that the listed equations are the most concise, and finally to unify the units.

It's one thing to ask a question, it's one thing to conserve energy, it's another thing to use energy to transform matter!

We know that there is no natural aluminum metal on the earth, but aluminum metal is used in large quantities in our production and life, and the common method used to produce metal aluminum is "electrolytic aluminum", which is alumina and then electrolysis!

The last few elements in the periodic table of chemical elements, which cannot exist in nature, are generated by scientists using energy and fusion.

I will give these two examples to show that human beings are using energy to transform matter!

200 years ago, energy and mass were two very different concepts. The former is kinematic, obeys the laws of thermodynamics, and has the property of increasing entropy; The latter, on the other hand, is stationary and obeys classical mechanics, and its very existence is the result of a decrease in entropy. At that time, energy and mass were conserved separately.

However, with the discovery of the decay of atoms, it was realized that energy and mass could be converted. As a result, the law of conservation of energy and the law of conservation of mass were replaced by the law of conservation of mass and energy, which further unified human understanding.

In 1905, through the analysis of the photoelectric effect, Einstein believed that the nature of light is particles, and derived the mass-energy conversion formula, so as to quantitatively determine the conversion ratio of energy and mass.

Since energy and mass are essentially the same, why do we often see mass as energy, but rarely as energy?

For example, fusion or fission of atomic nuclei reduces mass and releases energy. However, it is more difficult to convert energy into mass with the help of particle bombardment. Moreover, even if a high-quality particle is formed, it will decay back into a low-mass particle in a very short period of time, and the energy will be released again.

Since our universe is made of quanta, the essence of the universe is quantum motion. Discrete ground-state quanta make up space, the excited quanta are energy, and the closed system composed of high-energy particles is matter.

Thus, energy is a measure of the ability of a quantum to move, and mass is a measure of the effect of a closed quantum on its space.

Since there are far more paths for particles to move in open motion than for particles to move in a closed motion, it is a probabilistic event for an object to exist in the form of energy.

This is why we see far more events in the conversion of matter into energy than in the conversion of energy into mass. The formation of the latter requires specific conditions.

For example, with the help of chlorophyll, plants.

In eastern Africa, the local natives have an ingenious hunting method: they put a box of honey on a tree, hang a large piece of wood with a rope on the tree, and bury some sharpened wooden pegs in the ground under the tree. The scent of honey would attract gluttonous black bears, but when the bears climbed into the middle of the trees, they were blocked by wood.

The bear pushes the stake away with its claws, and the stake hits the bear's head as it falls. The bear pushed the stake away with more force, and the stake hit the bear harder. At this time, the bear was enraged.

It struggled to open the stake, and the stake hit the bear on the head again, and the bear and the stake had a fierce fight. Eventually, the bear was exhausted and fell from the tree, landed on a wooden peg and was captured. This device can be used continuously and is very effective.

So, who exactly knocked the bear out of the tree? It turned out to be the bear himself. When the bear pushes the stake away at a certain speed, the position of the stake rises during the swing, the gravitational potential energy increases, and the velocity decreases, and the kinetic energy is desensitized into the potential energy of the stake. When it reaches the highest point, all the kinetic energy is converted into potential energy, and then the stake swings back, and then the potential energy is converted into kinetic energy, so that the speed of the stake is faster and faster, and when it reaches the lowest point, all the potential energy is converted into kinetic energy.

The bear is at the lowest point, so the stake will hit the bear with the speed at which the bear pushes it away.

In this trap, in fact, the law of transformation and conservation of energy is utilized. This law is extremely important in physics'It is known as a "red line" running through physics, and Engels called it "the great law of motion". However, you may not believe it, but this great law of motion was not first proposed by physicists, but by a doctor named Meyer.

Meyer was a German doctor, but he was very interested in biology, chemistry and physics. And while practicing medicine, he also studied things from Hanna. In 1840, Meyer traveled from Surabaya to Java as a ship's doctor.

In Java, he found that the venous blood of the locals was not dark red like people in other high-altitude areas, but bright red like arterial blood. This discovery surprised and intrigued him. It caused him to think for a long time, and at the end of the voyage in 1841, he came to a more mature opinion.

He explained the above phenomenon with the combustion theory, arguing that because of the hot local climate, people do not need to take too much heat from food, so the burning process of food in the body is weakened, and more oxygen is left in the venous blood, so it is bright red. He went on to think that what chemists generally believed was that matter is immortal can also be applied to "force" (energy was also called force at the time). It is believed that force (i.e., energy) is as indestructible as matter, and that they are added in different combinations, destroyed in the old form, and formed into a new form.

In 1842, Meyer published his article "Commentary on Mechanical Forces" in the journal "Chemistry and Pharmacy" edited by the German biologist and chemist Liebig, thus becoming the first person to propose the law of transformation and conservation of energy.

In 1905, Albert Einstein proposed the famous special theory of relativity, and at the same time derived the far-reaching mass-energy conversion formula e=mc, so some people used this formula to calculate and produce huge nuclear warheads with kinetic energy. The universe was born 13.8 billion light-years ago when the singularity occurred**, and after the occurrence**, an infinite kinetic energy was formed, which was eventually transformed into a variety of chemicals. In fact, in real life, the kinetic energy of material transformation can also be seen everywhere.

For example, coal is converted into kinetic energy, small animals obtain kinetic energy from food, and electromagnetic energy is obtained from water.

Initially, the focus was on electronic devices, so some experts have proposed to elaborate on the collision of two optical quanta, which then causes electrons and positrons. His idea was to build a large particle collider for the collision of light quanta, rather than antiprotons. The first step to this is to use a high-energy laser to speed up the electronics close to light and knock it down against a glass pane, so that it produces a beam of light, but this light is hundreds of millions of times more pronounced than natural light.

In the environment, only the pre-expansion period of the universe has such a high ambient temperature, and the inner core temperature of the sun is only more than 10 million degrees, which means that most of the chemicals should have been produced at the birth of the universe. This is indeed the case, according to the basic theory of the expansion of the universe. The mass of a substance includes both the rest mass and the moving mass.

For example, optical quanta do not have static qualities, but they do have kinetic energy and kinetic qualities. It makes no sense to talk about kinetic energy without chemicals, and kinetic energy cannot exist independently. For example, in the process of thermonuclear reactions, the quality is damaged, but the part of the quality that is damaged is converted into other forms of chemicals.

The so-called zero point energy of the vacuum pump also corresponds to the quantum fluctuation in the vacuum, that is, the annihilation of virtual particles.

Because the whole process of converting chemicals into energy is very short-lived, it is difficult for people to release so much kinetic energy in a short period of time. Therefore, with today's know-how, it is very difficult to transfer heat into matter. Second, heat transfer to chemicals often requires more kinetic energy.

Like the birth of the universe, it is because of the singularity ** that the kinetic energy is much higher than that required by chemical matter, which gives rise to all kinds of substances in the universe. It's hard for people to gather so much kinetic energy, and 1 gram of chemicals can produce about 220 billion kcal of kinetic energy, which is just the essence of the analysis. In fact, even if there is so much kinetic energy, everyone has to wait for more energy to convert the energy into a population, and this time requires higher and higher technology.

All in all, although kinetic energy and mass are essentially the same and they can be exchanged, the specific direction of their transformation is determined by their environmental factors.

Energy itself can become matter, but energy requires a fairly high level of technology to do so. Albert Einstein mentioned this in his research materials.

It's not that it can't be converted into a substance, but the reaction conditions are more harsh, and they need to be converted into each other under fixed conditions.

The main reason is that the reaction conditions are very harsh, and theoretically there are such transformation conditions, but we do not yet have enough scientific and technological strength to support it.

The first law of thermodynamics is the application of energy conversion and conservation of energy to thermodynamics. The first law of thermodynamics, also known as the law of conservation of energy, states that energy can be converted into each other between various forms, but the total energy remains constant in a closed system.

The first law of thermodynamics states that in a closed system, the change in internal energy is equal to the sum of the perturbations of heating and work. Mathematically expressed as:

u = q + w

where δu is the change in the internal turbulence sensitivity of the system, q is the heat transferred to the system, and w is the work done by the system externally. This law states that the increase in the internal energy of a system can be achieved by absorbing heat or doing work on the system and vice versa. This law also reveals the relationship between the transformation of energy between heat, mechanics, and other forms.

The law of conservation of energy.

The content of the law: energy is neither created nor disappeared out of thin air, it can only be transformed from one form to another, or from one object to another, and its total amount remains unchanged in the process of transformation or transfer.

1) Different forms of energy in nature correspond to different forms of motion: the motion of objects has mechanical energy.

The motion of molecules has internal energy, the movement of electric charge has electrical energy, the nucleus.

The movement inside has atomic energy.

Wait a minute. 2) Different forms of energy can be converted into each other: "Frictional heat generation is the work done by overcoming friction.

Convert mechanical energy into internal energy; Water vapor when the water in the kettle boils.

Work on the lid of the pot to lift the lid of the pot indicates that the internal energy is converted into mechanical energy; The electric current does work through the heating wire, which converts electrical energy into internal energy, and so on." These examples illustrate the process by which different forms of energy can be converted into each other and by doing work.

3) If the energy of a certain form decreases, there must be an increase in the energy of other forms, and the amount of decrease and increase must be equal The decrease in the energy of a certain object must have an increase in the energy of other objects, and the amount of decrease and increase must be equal.

Conservation of energy and the law of transformation.

It was an important theoretical cornerstone of the natural sciences in the 19th century. The significance of energy conservation is first and foremost to establish an equiquantitative relationship between the physical quantities of a pure wild species in the process of material movement and change. In this regard, we do not need to know the actual interaction process between matter, nor do we need to know the transformation path between energy in the process of material motion change, as long as the relationship between energy and physical quantity corresponding to the state of matter motion is established, we can establish an equal relationship between the initial state and the final state in the process of material motion change, so as to facilitate the solution of the quantity of the material motion change process.