Is magnetization a physical or chemical change

Magnetization is a physical change because this whole process does not involve the recombination of atoms, so it is not a chemical change.

It is a process in which the object receives the influence of the magnetic field in the magnetic field, and the magnetic monads inside it are regularly combined.

Physical change. Ferromagnetic substances are inherently magnetic, but they form very small magnetic domains (micrometer scale), and the direction of each magnetic field is random and cancels each other, and there is no magnetism in general. The process of magnetization is to confine a part of the magnetic domains to the same direction with an applied magnetic field, so that the net magnetism is exhibited.

However, if the magnetic domains that were originally confined are dispersed in all directions after a violent impact or heating, the magnetism disappears.

It's not entirely certain yet.

How are magnets magnetic.

Probably think so.

It is produced by the fact that the electrons inside move in the same direction.

So magnetization. It can be thought of as changing the direction of movement of electrons.

It doesn't take any atom to gain electrons, or lose electrons.

There is no need for chemical changes.

It should be a physical change, a chemical change is the recombination of chemical atoms to form a new molecule, and magnetization is the rearrangement of molecules.

The magnetism of matter belongs to physical properties, and the magnetization of an object is only a change in the order of electrons in the matter, while the order of atoms does not change, that is to say, there is no chemical change, only a physical change.

It's a physical change.

This is because no new matter is formed during magnetization.

It is a physical change, and no new matter is generated.

The difference between physical change and chemical change is only to see if there is a new substance generated, if there is no physical change, if there is a chemical change!!

Physical change refers to the fact that although the state of matter has changed, generally speaking, the composition of the substance itself has not changed. For example, changes in position, volume, shape, temperature, pressure, and conversion between gaseous, liquid, and solid states. There are also physical changes in the interaction between matter and electromagnetic fields, the interaction between light and matter, and the interaction and transformation between microscopic particles such as electrons, atomic nuclei, and elementary particles.

Chemical change refers to the process of conversion or transfer of atoms or electrons between molecules in contact with each other to form new molecules accompanied by changes in energy, which is essentially the breaking of old bonds and the formation of new bonds. Chemical changes are always accompanied by physical changes. In the process of chemical change, there are usually luminescence, exothermia, and endothermy.

According to the atomic collision theory, the chemical change between molecules is accomplished by collision, and two conditions need to be met to complete the collision reaction molecule: sufficient energy and correct orientation. Because the reaction needs to overcome a certain molecular energy barrier, it must have a higher energy to overcome the molecular energy barrier.

Two colliding molecules must have the correct orientation for the old bond to break.

Summary. If the molecular magnetic moment of the magnetic medium is zero, no magnetic field is added, macroscopic magnetism is not magnetic, and the electrons in each molecule in the medium are precession under the action of the external magnetic field, and the direction of the additional magnetic field is opposite to the direction of the external magnetic field, so the external magnetic field is weakened, and the induced magnetic moment is mainly formed by the induced magnetic moment generated by the molecule - induced magnetizationFrom the perspective of the conductor cross-section, the sub-currents in the conductor are reversed in pairs and cancel each other.

Good. If the molecular magnetic moment of the magnetic medium is zero, no magnetic field is added, macroscopic magnetism is not magnetic, and the electrons in each molecule in the medium are precession under the action of the external magnetic field, and the direction of the additional magnetic field is opposite to the direction of the external magnetic field, so the external magnetic field is weakened, and the induced magnetic moment is mainly formed by the induced magnetic moment generated by the molecule - induced magnetizationFrom the perspective of the conductor cross-section, the sub-currents in the conductor are reversed in pairs and cancel each other.

There is a more detailed answer, no, can you talk about it specifically?

Please write about the physical process of magnetization of a magnetic medium in a magnetic field, and change the topic to this.

Microscopic Mechanism of Magnetization Molecular Circulation Model: The magnetic medium is composed of a large number of magnetic molecules, each of which constitutes a toroidal current—a molecular magnetic dipole. When the magnetic field is not loaded, the magnetic moment orientation of each molecule is chaotic, so the magnetic medium is not macroscopically magnetic.

The temperature of the factors that affect the magnetic force of the magnet There are dozens of types of magnets, such as ferrite magnets, NdFeB magnets, bonded NdFeB, Alnico cobalt, cobalt, injection ferrite, etc. Generally speaking, in the process of use, the temperature of the product is lower than the limit of the magnet, and there will be no demagnetization (for example, the maximum temperature of the brushless external motor is 80-100 degrees, and the material of the magnet 120 degrees is generally selected to ensure that the demagnetization will not exceed 5%). Of course, this is the material for NdFeB magnets).

Therefore, the demagnetization and service life require a combination of ambient temperature and the selection of temperature-resistant materials for magnets. The existence of the alternating magnetic field of the factors affecting the magnetic force of the magnet should generally know that the magnet is divided into n, s pole or multipole. During the use of the magnet, if there are other magnetic fields around the magnet, it will cancel out part of the magnetic force of the magnet.

This is the reason why users say that it is also demagnetized within the operating temperature range during use. The mechanical vibration of the factors that affect the magnetic force of the magnet has a certain relationship with the assembly, the magnet rubs against the product during the assembly process, and the magnet itself belongs.

Magnetization refers to the magnetic moment in the material due to the action of a magnetic field.

When arranged, the orientation tends to be the same, and there is a certain magnetic phenomenon.

The process of making a material that was not originally magnetic to acquire magnetism. Some objects will appear magnetic when silver dust is affected by magnets or electric currents, and this phenomenon is called magnetization. Wanton.

Physical change: In some changes, matter simply changes from one state to another without producing new matter. For example, the tri-state change of water.

Chemical change: In some changes, the substance involved in the process of change changes from one substance to another new substance. For example, rusting steel turns iron into another substance.

Difference: Whether new substances are produced.

Also, there is no chemical change in the physical change, whereas the chemical change is accompanied by a physical change.

What is produced by a new substance is a chemical change, and what is generated without a new substance is a physical change.

The absence of new matter is called a physical change, and the creation of a new substance is called a chemical change.

It is to see if there is any new substance produced.