Of course, ice is made of water, but why can the temperature dissolve ice o ? Whoever says it, plus

The principle of fire is a strong chemical reaction between a substance reaching its ignition point and oxygen in the air. Water overcomes fire because water can isolate matter and oxygen on the one hand, and reduce the temperature of the substance on the other hand, so that it falls below the ignition point. Therefore, it is not absolute that water overcomes fire, and pouring a small amount of water into the burning furnace will make the combustion more intense.

Therefore, when the amount of water cannot reach the condition of insulating substances and oxygen, and the temperature is not lowered, the fire cannot be suppressed, but the French and British may produce flammable substances such as methane, which will make the fire burn more violently. The same is true for melting ice at temperature, ice is water in a solid state, and as the temperature rises, the water in the solid state reaches its melting point and liquefies. But if you throw a lot of ice on the fire, you will still put out the fire, and in the same way, you will isolate the oxygen on the one hand and lower the temperature on the other.

The necessary conditions for combustion are temperature and oxygen.

Water overcomes fire, but fire also overcomes water, depending on how it is used. Why does temperature melt ice? This is very simple, because water can freeze at minus zero, and of course, when the temperature is higher than (that is, above zero) the temperature will slowly dissolve, and the higher the temperature, the faster the ice will dissolve.

You can put the ice in a cup and pour in boiling water, and you will know that the ice also dissolves quickly.

If you want to say that, the high temperature of the fire can also make the water evaporate at once, who do you say? So none of these things are absolute, if you suddenly press a large piece of ice on the fire, the fire will be extinguished, who do you say? So let's analyze the specific problems in detail

Although the temperature does not change, the molecular structure changes, and the molecular potential energy increases, so the internal energy increases.

The first law of thermodynamics δe=q+w, which means that the increase in the internal energy of the system is equal to the sum of the heat absorbed by the system from the outside world and the work done by the outside world on the system. First, consider the situation where the outside world does not work on the system. w=0, because the temperature of the system increases, it can only be obtained by endothermy, q>0, then δe>0, the energy in the system increases.

If the system is endothermic and expands, then W0, at a rough glance, cannot tell the plus or minus signs of δe. It is not possible to use the heat absorbed by the system completely for work without causing other changes. The heat absorbed by the system from the outside world is partly used for work and partly for heating, and the heat absorbed is greater than the external work value of the system, that is, |q|>|w|, so back to δe>0, the internal energy of the system still increases.

The characteristics of water have long been familiar to everyone, but scientists have discovered an anti-physical property of water, water will freeze at a continuous high temperature of 105, this discovery has also made many experts and scholars fall through the glasses, and the reason why this kind of situation can occur is mainly because these water is put into carbon nano management, so the water will not evaporate with the increase of temperature, through reheating, you can easily make the temperature of the water reach 105, That's when the water miraculously freezes.

After the temperature of the water reaches 105, the water cannot be converted from liquid to gaseous, and the energy of its internal structure cannot be released, because there is no channel for release, these molecules will be reorganized, so it will condense into "ice", please believe me, this kind of "ice" is not the familiar "ice" and not the ice formed because of low temperature in the natural environment of winter, it is just some kind of crystal, after all, it is produced under 105, It is still very different from the ice produced below 0 degrees Celsius.

Another anti-physical property of water is known to everyone, that is, heat shrinkage and cold expansion, on the earth, all items known to human civilization will heat up and shrink, and water will freeze when the temperature decreases, the volume of ice is larger than water energy, it is precisely because of this anti-physical property, water will float on the surface of the lake after freezing instead of sinking to the bottom of the water, if the ice will sink to the bottom of the water, the whole earth will be transformed into a frozen world, and it is unlikely that there will be life.

Scientists believe that when water is heated directly to 105, it cannot quickly convert from liquid to gaseous state, releasing the energy inside, so it forms "ice". This kind of "ice" is not the "ice" we are familiar with, it is another kind of water crystal, and there is still a big gap between it and the ice formed below zero degrees Celsius.

Under normal circumstances, water does not freeze at 105, and this freezing phenomenon only occurs under certain circumstances. This so-called icing occurs when several water molecules are locked into a carbon nanotube with a certain diameter range. It's not so much an icing as it is a solid that has formed some kind of icing-like state.

Yes, scientists have added a nanotube material, when the water reaches 100 degrees, it changes from liquid to gaseous, but the sealing of nanotubes is strong, so the water will not be volatilized, the liquid state cannot become gaseous, and the internal energy cannot be released, so the "ice" crystal will be formed.

Why does water freeze when heated to 105? What conclusions do scientists conclude?

This is similar to the properties of hydrogen turning into solid hydrogen at a million atmospheres.

China has long boiled water for ice, you can check it.

The person who asked this question is already poor and doesn't know what a pressure cooker is.

The 3 states of an object, i.e., solid, too, and gaseous. Ice is the solid form of water, water stone is in liquid form, and water vapor is gaseous. All objects have their 3 states, except that the melting and boiling points are different.

The melting point refers to the critical temperature at which a solid state becomes a liquid state, and the boiling point refers to the critical temperature at which a liquid state becomes a gaseous state. Moreover, these critical temperatures are also related to the air pressure on the surface of the object.

The melting point of water at standard atmospheric pressure is 0 degrees, and the boiling point is 100 degrees. When the ears are high at zero, the ice will turn into water, and below zero, the water will freeze. 3. Water and ice are two different states of the same substance, just like people have times when they are angry and calm, but people are still the same person, as for why they become angry and calm, or calm and angry, it is like ice can turn into water, and water can turn into ice, this is a great masterpiece of God.

From a physical point of view, when the temperature of water drops below 0 degrees Celsius at standard atmospheric pressure, the structure of its branches and hands changes and it emits heat and becomes ice, and when it is above zero, the ice becomes water because of the change in its molecular structure due to the absorption of heat1, water can be put in the refrigerator can be ice, 0,

The temperature of the ice-water mixture has always been zero, for the ice-water mixture 1, if you put it at a very high temperature. (like a 40 room) it certainly has to absorb heat. But because there is ice, the heat is absorbed and melted by the ice first.

And the process of ice endothermic melting, the temperature remains the same, or 0So, as long as there is ice in it, the temperature will not rise (or 0).2. If you put it at a very low temperature.

Such as -40 rooms) it of course to be exothermic. But because there is water, the water is exothermic first. In the process of exothermic solidification of water, the temperature remains unchanged and is still 0

So, as long as there is water in it, the temperature will not drop (or 0).