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Of course, it can continue to boil, and when the water reaches its boiling point, it takes five percent of the fire to continue boiling.
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After the water is boiled at 100 degrees Celsius, it can still be boiled by heating it with a fire of 5 degrees.
Not a 5-degree fire to be exact.
For example, the lowest gear on the induction cooker can also be boiled, but it will slowly cool down, and then it will not boil.
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It depends on how long you have to leave it, if it boils immediately, you can boil if you continue to heat it at 5 degrees Celsius.
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In this case, if you add 5 degrees, it is basically possible to boil, because the boiling point of water is fixed, so boiling is a manifestation of water.
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The temperature does not change after the water boils.
To keep the water boiling, you need to continue to heat the water.
As long as the water can absorb heat, it can maintain the boiling state of the water.
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If you heat it with a 5 degree fire, you can't boil because the temperature can't be reached.
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If you say that the temperature of the fire is controlled at 5°C, this is unrealistic, because no fire has such a low temperature unless you are very far away from the source of fire or heating. Then there is a problem at this time, according to the knowledge that has been taught in physics. Energy is only spontaneously transferred from hot to cold objects.
Your water is 100° fire and only 5°, do you think the water can continue to heat up or stay at 100°? Obviously impossible.
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First, after the water boils, it is heated by a fire of 5 °, which should not be able to boil, because this should require it to reach a certain temperature, so that it should be able to renew the boiling.
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This is more difficult, because there is no five-way fire, so in this world, it is difficult for you to use five or six fires to heat, and you can't say that there is such a phenomenon, even if you have a big gap between the temperature of the atmosphere and him, so you will definitely not continue to fly.
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After the water boils at 100 degrees. If he continues to heat it with fire, he will always be able to keep it boiling.
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Boiling water is boiling at five degrees Celsius, but if the air pressure suddenly drops, it may boil again.
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A month later, I'm going to be able to on Fridays with 5 degrees of heat, drink some wine, and have a lot of water.
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There is no 5 degree fire at all, so this kind of thing is not true at all, if it is 5 degrees, the heat of the water will be transferred in reverse.
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Hello, after the water boils, heat it with a fire of 5 degrees Celsius, and you can no longer boil.
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Water boiling at 100 degrees Celsius and heating it with a fire of 5 degrees Celsius is not allowed to boil.
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After the water boils, heat it with a 5 degree fire because there is no 5 degree fire.
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After boiling more than 100 degrees of water, I don't think it can boil if it is heated at 5°C.
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Boiling is one of the ways of vaporization, and two conditions are required for boiling to occur: one is to reach the boiling point; The second is to continue to absorb heat. And both conditions are indispensable.
The boiling point of a liquid is related to pressure, and when the pressure increases, the boiling point increases; The pressure decreases and the boiling point decreases. The boiling point of water at 1 standard atmosphere is 100. The greater the air pressure in the pressure cooker, the higher the boiling point of the water, up to 125; The atmospheric pressure on the Tibetan Plateau is low, and the water boils at around 80.
The atmospheric pressure is variable, different places, the atmospheric pressure is different, even in the same place, the atmospheric pressure will be different, for example, the atmospheric pressure is higher on a sunny day than on a cloudy day, and the atmospheric pressure is higher in winter than in summer. Generally below the standard atmospheric pressure, but not too much, so the boiling point of water is slightly below 100.
Many bacteria in the water can be killed by 70, most bacteria by 100, but some bacteria by 120 are not killed. And the higher the temperature, the shorter the time to kill the bacteria. Purely from the point of view of killing bacteria, it should be that the higher the temperature, the better the effect, but the boiling point of the liquid is related to the air pressure, at a standard atmospheric pressure, the boiling point of water is 100, and the temperature of the liquid remains the same during the boiling process.
Therefore, to increase the boiling point of water, it is necessary to increase the pressure, such as using a pressure cooker.
In the past, there were no conditions, so the maximum boiling temperature of water could only reach the boiling point of water, and practice has also proved that it is safe to boil water for drinking. In addition, boiling water is a very obvious sign that it is easy to judge. Therefore, boiling is used as the standard for boiling water.
Similarly, eggs can be cooked at about 50 hours, and people also have to heat the water to a boil. But it doesn't have to be 100, as mentioned above, under a standard atmospheric pressure, the boiling point of water is 100, and the atmospheric pressure changes, so the boiling point of water also changes.
In general, the atmospheric pressure in the plains is below one standard atmosphere, and the boiling point of water is less than 100. If you don't believe it, you can use a thermometer to measure it when boiling water. In addition, the boiling water temperature of the water dispenser used in the family is generally about 85, the low is only 75, and the highest is 98, and many people are drinking, so the drinking water does not necessarily have to be heated to 100, and it is no problem to be a little lower.
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Yes, the maximum temperature of water is 100 degrees Celsius, so as long as the water is heated to a very boiling temperature, it can reach 100 degrees.
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Under normal circumstances, it is impossible to reach 100 degrees Celsius, because there are still many other factors that will generally lower the boiling point.
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It can go up to 100 degrees, because water at 100 degrees is not necessarily able to boil, and it will only boil after reaching 110 degrees.
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Of course, it can reach 100 degrees, and it is only higher than 100, and it cannot be lower than 100, because this is the boiling point of water.
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Yes, when water boils, it boils.
Because the water is boiled, it does not mean that it has reached 100 degrees, but that the water has been continuously boiling, in our understanding, do not think that 100 degrees is the water boiling, in fact, this is not the truth.
At the same time, in our drinking water safety, for the sake of our health, we should keep the water temperature at about 95 degrees to reach the normal drinking standard, because boiling water to a continuous boiling state is not conducive to our physical health.
Precautions for boiling water:
1. When the water is about to boil (80-90), the lid of the pot should be opened.
Because there are more and more organic pollutants in water now, some substances are volatile and will be volatilized with water vapor when heated. Therefore, when the water is about to boil, the lid of the kettle should be opened to allow these substances to be volatilized to the maximum.
2. Wait about 3 minutes for the water to boil before turning off the heat.
This is because after ordinary water is sent to the waterworks, it is chlorinated to remove impurities such as microorganisms. But at the same time, chlorine interacts with residual organic matter in water to form toxic carcinogenic compounds such as halogenated hydrocarbons and chloroform.
The contents of halogenated hydrocarbons and chloroform are closely related to the change of water temperature and the duration of boiling.
3. Water cannot be boiled repeatedly, it is best to drink it now.
The flowing water has a certain self-purifying effect, and the ideal drinking water is fresh water. Scientific studies have found that water ages quickly. Water molecules are in a chain-like structure, and if the water is not often hit strongly, that is to say, the water is not often in a state of motion, but in a static state, this chain-like structure will continue to expand and extend, becoming aging water, commonly known as "dead water".
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Temperature transfer requires a gradient, or a difference, (just as water needs a difference in water level to flow). In boiling water, the maximum temperature of the water outside is only 100 degrees Celsius, and it is difficult for the water inside the water to reach 100 degrees.
It's not difficult to understand that you can't boil water if you use a 100-degree heating plate to boil water.
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When boiling water, there is actually boiling in the water, but because it is not on the surface of the water, the phenomenon is not obvious. Boiling water to produce bubbles is boiling, but bubbles in water cannot produce splashes. Hope.
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When the school opened, that is, after the rice was hit at 100 degrees, the water kept turning into that kind of bubble.
Your statement is not right, as long as the water is boiling, it will always be in an extraordinary state.
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When the water boils, it boils. Bubbles are produced when boiling. In fact, bubbles are formed in the liquid when heated to a certain temperature (non-boiling point) before boiling.
The bubbles in the liquid before boiling are not the vapors after the liquid has vaporized, but the air that was originally dissolved in the liquid. Because the higher the temperature, the weaker the dissolution ability of the gas in the liquid, so that some of the air originally dissolved in the liquid cannot be dissolved after heating, and the liquid overflows.
Precautions for boiling water:When boiling water daily, we can first take a pot of tap water, let it stand for a period of time and then boil, let the harmful substances in it decompose off, and open the lid when the water is about to boil, so that the organic pollutants in it volatilize with the water vapor, the water can not be boiled repeatedly, it is best to boil and drink, the aging speed of water is very fast, and the water that is repeatedly boiled is easy to become aging water. Drinking cool, boiled water is beneficial. The so-called cold boiled water is to pour the boiled water into a teacup or kettle, cover it, and wait for it to cool down to 20 to 30 to become a cup of cold boiled water.
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This boiling point has a relationship with atmospheric pressure.
Boiling is a phenomenon of violent vaporization that occurs simultaneously inside and on the surface of a liquid at a certain temperature. The boiling point is the temperature at which the liquid boils, that is, the temperature at which the saturated vapor pressure of the liquid is equal to the external pressure. Boiling point refers to the temperature at which a pure substance boils at 1 standard atmosphere.
The boiling point of different liquids is different. The boiling point changes with the change of external pressure, and the low pressure is also the low boiling point.
The Chinese name is boiling point.
Foreign name boiling point
Basic definitions. When the liquid boils, the saturated vapor pressure in the bubble formed inside it must be equal to the pressure exerted by the outside before the bubble can grow and rise, so the boiling point is the temperature when the saturated vapor pressure of the liquid is equal to the external pressure. The boiling point of a liquid is related to the external pressure. When the pressure of the liquid increases, its boiling point increases; When the pressure decreases; The boiling point decreases.
For example, the steam pressure in a steam boiler is about a few tens of atmospheres, and the boiling point of water in a boiler can be more than 200. For another example, when cooking rice in a high mountain, the water is easy to boil, but the rice is not easy to cook. This is due to the fact that the atmospheric pressure decreases with the increase in the topography and the boiling point of water also gradually decreases with the increase in altitude.
At an altitude of 1,900 meters, the atmospheric pressure is about 79,800 Pa (600 mm Hg), and the boiling point of water is that those with a low boiling point generally vaporize first, while those with a high boiling point are generally more difficult to vaporize.
Different liquids. At the same atmospheric pressure, the boiling point of different kinds of liquids is also different. This is because the saturation vapor pressure is related to the type of liquid. At a certain temperature, the saturated vapor pressure of various liquids is also constant.
For example, at 20, the saturated air pressure of ether is Pa (44 cm Hg) lower than the atmospheric pressure, and the temperature rises slightly, so that the saturated vapor pressure of the ether is equal to the atmospheric pressure, and the ether can be boiled by heating it to 35. If the liquid contains impurities, it will also affect the boiling point of the liquid. The boiling point of a liquid containing solute is higher than that of a pure liquid, which is due to the fact that the gravitational force between the liquid molecules increases after the presence of a solute, the liquid is not easy to vaporize, and the saturated vapor pressure is also smaller.
To make the saturation vapor pressure the same as the atmospheric pressure, the boiling point must be raised. Different liquids have different boiling points under the same external pressure. The relationship between boiling point and pressure can be obtained from the Clausius equation.
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The boiling point of water is related to atmospheric pressure. The temperature at which water boils is called the boiling point of water, and what we usually call "the boiling point of water is 100" refers to the temperature at which water boils at a standard atmospheric pressure.
1. In different atmospheric pressure environments, the boiling point of water is also different. The lower the atmospheric pressure, the lower the boiling point, and the higher the atmospheric pressure, the higher the boiling point. When water is evaporated as a liquid, it produces vapors.
When the pressure of the vapor is equal to the pressure of the outside, the pressure of the vapor has reached a state of saturation at this time. At this point, the water boils, and the temperature at which the water boils is the boiling point of the water.
2. When the external pressure increases, the pressure of the vapor will also increase, at this time, the temperature needs to be raised to make the vapor pressure reach a saturated state, and at the same time, the boiling point of water will also increase, so the higher the atmospheric pressure, the higher the boiling point of water.
Third, it is related to the local air pressure.
1. If it is a standard atmospheric pressure, heat to 100, the water boils 2, if the altitude is higher, the boiling temperature decreases.
3. For every 1000m above sea level, the boiling point decreases by about 3
4. For example, the city of Lhasa is more than 3,000 meters above sea level, and the boiling point of water is about 90
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The boiling point of water is related to the surface air pressure.
The greater the air pressure, the higher the boiling point.
The boiling point of water at a standard atmospheric pressure is 100 degrees Celsius.
If it's less than 100 degrees Celsius, it's boiling.
Indicates that the air pressure is less than one standard atmosphere (e.g., on a plateau).
The pressure cooker uses this principle to increase the boiling point of water, so that the temperature rises when the temperature is raised, thereby shortening the time it takes to cook and cook.
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It is related to atmospheric pressure, and the greater the atmospheric pressure near the ground, the higher the boiling point of water.
That's why boiling water on the plateau is less than 100 degrees.
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