Is it because there is repulsion between molecules that a broken mirror cannot be rerounded?

No, but because the distance has exceeded the limit, there is no force between the molecules.

Principle: The intermolecular forces should be expressed, and the distance between the molecules should reach the molecular diameter of about 10 to the 10th power.

And put the broken mirror together. They are felt to the naked eye, but almost all of the molecules are very far apart, and the gravitational pull between the molecules is not strong enough to draw them together.

The phrase that a broken mirror cannot be reunited has a double meaning. The first meaning is what we usually call slang for the maintenance of relationships between people around them. The second meaning and a chemical element.

Relate. This mysterious chemical element is called entropy. But this entropy does not refer to a specific matter, but to a degree of material chaos in the universe.

Broken mirror reunion idiom source:

Tang Dynasty Meng Di's "Ability Poems and Emotions" contains: The wife of Prince Chen Xu Deyan, the sister of the queen uncle Bao, Princess Feng Lechang, is the most talented. When Chen's politics were in turmoil, he knew that his words were not guaranteed, and his wife said:

With the talent of the king, the country will die and the house of the human rights and heroes will never be there. The relationship is not broken, and I still hope to see each other, so it is advisable to believe in it. ”

It is a broken mirror, and people hold half of it, and they say: "He will sell it in the city with the first month and the sun, and I should be there, that is, I will visit it on the day." "And Chen died, and his wife Guoren Yue Gong Yang Su.

Home, pampered and generous. Deyan was exiled from hard work, and could only go to Beijing, so he visited the city with the first month of the year.

There are people who sell half mirrors with pale heads, and the price is very high, and everyone laughs at it. Virtue leads directly to his residence, set up food, with the reason for the words, out of the half mirror to merge it, still inscribed the poem said: "The mirror and the people are gone, and the mirror is not returned."

There is no shadow of Chang'e, and the bright moon shines in the sky. "Chen's got poetry, weeping and not eating. Knowing it, he changed his face suddenly, that is, he called for virtue and returned his wife, but he still left it behind.

Everyone who heard it sighed.

Still drinking with Deyan and Chen, Chen's poetry, saying: "What is the move today? New officials against old officials.

Don't dare to laugh and cry, it's difficult to be a person. Then he returned to Jiangnan with virtue, and he died old. Later, the "broken mirror reunion" is used to refer to the reunion or reconciliation of husband and wife after separation or breakup.

Answer: This cannot be explained, because the gravitational force and repulsion force between molecules are within the molecular radius of 10 times the distance between molecules, and the distance between broken mirror molecules is much greater than 10 times the molecular radius, and when the distance between molecules is much greater than 10 times the molecular radius, the force between molecules (including the gravitational force and repulsion force between molecules) is very small, almost zero, therefore, the force between molecules is not considered, so it cannot be explained. When the distance between the molecules is within 10 times the radius of the molecule, the force between the molecules is considered, and when it is outside this range, the gravitational force between the molecules is considered.

No, it's because the molecular spacing is too large.

No, the force is too fragile.

Because there is repulsion between molecules.

No, it's because there is a gap between the molecules.

Why can't the broken mirror be reunited? As long as you solve this puzzle, you can easily go back to the universe.

Answer: This cannot be explained, because the gravitational force and repulsion force between molecules are within the molecular radius of 10 times the distance between the molecules, and the distance between the broken mirror molecules is much greater than the molecular radius of 10 times, and when the distance between the molecules is much greater than 10 times the molecular radius, the force between the molecules (including the gravitational force and repulsion force between molecules) is very small, almost zero, therefore, the force between the molecules is not considered, so it cannot be explained. When the distance between the macro-beams is within 10 times the radius of the molecule, the force between the molecules is considered, and when it is outside this range, the gravitational force between the molecules is considered.

The failure to reround a broken mirror does not prove that there is intermolecular repulsion. It only means that the distance between the glass fragments is too large, which is greater than the distance at which the molecules attract each other.

When the distance between molecules r=10-10m, the gravitational force is equal to the repulsive force, and the force between the molecules is zero; When the distance between molecules is < 10-10m, the gravitational force between the molecules is greater than the repulsive force, and the gravitational force between the molecules behaves. When the distance between molecules is greater than 10 times that of 10-10m, the intermolecular forces become very weak and negligible.

1. The distance between molecules in a solid is small, the interaction force is very large, and the molecules can only vibrate near a certain position, so they have a certain volume and a certain shape.

2. The distance between the molecules in the liquid is small, the interaction force is large, and it exists in the form of a molecular group, the molecules can vibrate near a certain position, but the molecular groups can slide through each other, so the liquid has a certain volume, but it has fluidity, and the shape changes with the container.

3. The distance between gas molecules is very large, the interaction force is very small, and almost every molecule can move freely, so the gas has neither a fixed volume nor a fixed shape, and can fill the entire space that can be reached.

4. It is difficult for homologous matter to be stretched because of the gravitational force between moleculesLiquids are difficult to compress because of the repulsive force between the molecules. The reason why a liquid can maintain a certain volume is because of the gravitational attraction between the molecules.

040 Lecture 40: The broken mirror cannot be reunited.

No, the spacing between the fragments of a broken mirror is already very large, beyond the range of molecular forces, and cannot be explained by molecular repulsion.

Yes, after the intermolecular force is greater than a certain distance of repulsion, gravitational force.

The molecules of the iron rod are already very close to each other, and it is difficult for the iron rod to be compressed due to the repulsion between the molecules

The reason why it is difficult to circle the broken mirror is that the distance between the molecules is large, and the distance between the broken objects can cause the force is very small, so the gravitational force between the molecules is very small, and the hungry liquid is not enough to recombine the broken mirror

So the answer is: repulsion;Greater than

To solve this problem, you need to grasp the conditions of intermolecular forces: when the intermolecular distance is greater than 10 times the diameter of the molecule, there is neither gravitational force nor repulsion force between molecules

Solution: The broken mirror cannot be rerounded because the hardness of the glass is large, unlike the small hardness of lead, the glass is not easy to deform when put together, and the distance between the glass molecules is more than 10 times the diameter of the molecule, which is beyond the scope of the molecular force

Therefore, the answer to this question is: the distance between molecules is too large, beyond the range of molecular forces.

040 Lecture 40: The broken mirror cannot be reunited.

b. The theory of the universe is that the universe was born from the great **, **caused.

The universe expands. That's right. So choose B.

a. "It is difficult to reunite when the mirror is broken" is because the distance between the fragments of the broken mirror does not reach the distance of molecular interaction, not because there is a repulsive force between the molecules, so A is wrong;

b. When smoking in an air-conditioned room, you will see smoke in the air, which is the irregular movement of molecular clusters, not the movement of molecules, so B is wrong;

c. In astronomy, "light years" is used as the unit of length, so c is correct;

d. Triboelectric is only the transfer of charge, and no charge is generated, and the statement that triboelectric electrolysis creates electric charge is wrong, so D is wrong

Therefore, C

The broken mirror can not be rerounded, because the hardness of the glass is large, unlike the small hardness of lead, the glass is not easy to deform when put together, and the distance between the glass molecules is more than 10 times the diameter of the molecule, which exceeds the scope of the molecular force, and the intermolecular force is very weak, and there is almost no intermolecular force

So the answer is: large, almost no interaction forces

When the distance between two molecules is 10 a (that is, ten to the minus 9th meter), there is no obvious difference in repulsion or gravitational force between the molecules, but when the distance between the two molecules is less than 10 a, the force of attraction decreases rapidly, and on the other hand, the repulsion force increases rapidly at the same time, so that the repulsion force is clearly indicated, and the smaller the distance, the greater the repulsion force

And vice versa, but if the distance is too great, the gravitational pull will be smaller, and it will be "insignificant" compared to the other parts of the object

It is because the distance between the molecules of the glass is too large, and the force between the molecules is negligible. Welcome!