What is the white gas coming out of the spout when boiling water

The white gas coming out of the spout when boiling water is small droplets.

Water vapor coming out of the spout after the water boils.

When encountering cooler air, it will liquefy and form small water droplets, which are suspended in the air, which is what we see as "white gas". In summer, when the popsicle paper is opened, the air temperature around the popsicle is low, and the water vapor in the air will liquefy when it encounters the cold air around the popsicle to form "white gas", which is essentially small water droplets.

Mechanism of formation. Liquefaction is the process by which a substance changes from a gaseous state to a liquid state. Liquefaction is the reverse process of vaporization, where gas molecules attract each other and condense into a liquid. When liquefied, the substance emits heat. at critical temperatures.

The following gases can be liquefied. Liquefaction can be achieved by pressurization or cooling, or by pressurizing and cooling.

Gases with critical temperatures above or close to room temperature, such as ether, chlorine, ammonia, sulfur dioxide.

carbon dioxide and certain hydrocarbons.

It can be liquefied by compression at room temperature. Gases with very low critical temperatures, such as oxygen, nitrogen, hydrogen, helium, etc., must be cooled below their critical temperature and then liquefied by isothermal compression.

What is the "white gas" coming out of the spout when boiling water (b).

aWater vapor. b Small droplets.

c. Hot air. dNone of the above statements are true.

It is important to remember that water vapor is a gas, invisible to the naked eye, and whatever can be seen is certainly not water vapor. When boiling water, the temperature is high, water vapor is generated, and after volatilization, it encounters low temperature air and condenses into fine water droplets, which is the "white gas" we see, so "white gas" is also liquid water, but the water droplets are small and look like gas. In the same way, when the weather is cold in winter, the white breath exhaled from our mouth is also the condensed water vapor in our body.

Water vapor is easy to be mischosen, but water vapor is invisible, and white gas should be small water droplets that water vapor liquefies when cold. Pick B,

Be.

When the water in the pot reaches the boiling point, it begins to boil, is vaporized into water vapor, rises to a certain height and is cold, and then liquefied into small water droplets, that is, white gas that comes out when the water boils. Boiling is a phenomenon in which a liquid is heated beyond its saturation temperature, and violent vaporization occurs both inside and on the surface of the liquid.

Precautions for boiling water.

Tap water boils and opens the lid and boils for another 3 to 5 minutes: as soon as the flute of the kettle sounds, the housewife rushes to the stove and if the fire is turned off immediately, those harmful substances are retained in the boiling water.

Because the tap water contains precursors such as humic acid, it reacts to form trihalomethanes during the boiling of water, and reaches its highest point when the water is just boiled. At this time, you need to open the lid of the kettle and let the water continue to boil for another 3-5 minutes, and the concentration of the total trihalomethanes will quickly drop to less than one-tenth before it becomes safe to drink.

It is water vapor that comes out of the pot and comes into contact with the cold air outside, forming a white gas that is clearly visible to the naked eye.

Not what water vapor is. It must be water vapor, but the water vapor produced by the boiling process contains toxic carcinogenic compounds such as halogenated hydrocarbons and chloroform, which volatilize with the water vapor, so it is best to keep ventilation during the boiling process

The appearance of "white gas" is due to hot water vapor.

When condensed, it condenses into small water droplets. However, the gas flushed out of the spout has a fast flow rate and the highest temperature, and the high speed makes the water vapor less affected by the cold air, so after decelerating after a certain distance from the spout, it fully meets with the cold air to form "white gas". When the kettle is less open, there is no white gas near the spout pot because the temperature near the spout is higher, and the water in the kettle.

The vaporized water vapor does not liquefy near the spout, so there is no "white gas" near the spout.

The white gas seen when boiling water is formed by the liquefaction of the water vapor coming out of the kettle when it is cold, the temperature at the spout is relatively high, and the water vapor coming out of the kettle cannot be liquefied, and the air temperature is relatively low in the far away of the spout, and the water vapor coming out of the kettle liquefies into small water droplets when it is liquefied by the cold air.

After the water is boiled, the water at 100 degrees will become water vapor and come out, and then due to the low temperature of the air, the water vapor will be liquefied into small droplets, so the "white gas" we see is only a small water droplet after liquefaction, and the real water vapor is invisible, which is the real reason why there is no white gas in the place closest to the spout.

The cause of white gas is the formation of small water droplets formed by the liquefaction of water vapor when it is cold. But in fact, whether it is boiling water or the formation of car exhaust in winter, it is the spout of the pot.

There is some distance. This is because when heating, the metal body has the function of conducting heat, and the air around the spout and the spout are hot and almost at the same temperature as the water vapor, so the water vapor is not cold in this range, and it will not liquefy into small water droplets, and there will be no white gas. In a slightly farther place, the air is cold, and there is a large temperature difference between the high temperature water vapor, so the water vapor will be cold and form small nuclear water droplets.

Because, in winter, the ambient temperature is low, so the phenomenon is obvious. It's like the exhaust gas in winter, and when you breathe in winter, it doesn't form white gas in your mouth. Do you understand?

The appearance of white gas is due to the formation of small water droplets when the water vapor meets the cold air, and the position of the spout is very hot.

When the water is boiled, there will be rising "white gas" near the spout, which is formed by the liquefaction of water vapor; When the "white gas" rises to a certain level, it disappears, and Bu Shen knows that this is due to the vaporization of small water droplets, so there is no white gas near the spout.

The closer to the spout, the higher the temperature, it is not easy to form a hedge with the cold air, so it will not produce white gas.

It may be that the temperature near the spout itself is relatively high, so no white gas is generated.

What is the phenomenon that "white gas" will come out of the spout when water is boiled? (gasification or liquefaction) please explain in detail.

When boiling water, the white gas coming out near the spout is small droplets. When boiling water, the water vapor with a higher temperature comes out of the spout, and when it encounters the air with a lower temperature around the spout, it liquefies into small water droplets, forming "white gas", so the "white gas" is a small water droplet. Evaporation can occur at any temperature.

In the summer, when the temperature is high, the water can evaporate, and in the winter, when the temperature is low, the water can also evaporate. Therefore, evaporation is the vaporization of a liquid at any temperature, not only on the surface of the liquid.

When the water is boiled, a lot of white gas comes out of the spout, which is a phenomenon formed by the process of water changing from liquid to gaseous, and then gaseous water to liquid water. There is a lot of white gas coming out of the spout, and this white gas is the water vapor coming out of the spout when it is cold, and it liquefies, forming small water droplets.

A lot of white gas coming out of the spout is liquefied in physics, at this time, because the temperature of the spout is particularly high, the water vapor has not yet liquefied, it is in the form of gas, and it is colorless. When this gaseous water reaches a certain height, the gaseous water will quickly liquefy due to the influence of room temperature in the air, resulting in white gas. When this white gas disperses in the dry air, it will vaporize again and dissipate it in the air in the form of water vapor.

From junior high school physics classes, we know that water has three forms: liquid, solid, and gaseous. But at room temperature, water is liquid, but when it reaches a certain high temperature, the water vaporizes into a gaseous state, and when the temperature becomes very low, the water will condense into a solid state, such as ice and snow, which will exist in solid form.

Boiling water in a kettle is from a room temperature water to high temperature water, and in this process, there will be water slowly turning into a gaseous state because of high temperature, when a lot of gaseous water gathers together, and emitted to the air, it will become liquid, because the temperature in the air is room temperature, so the gaseous water will become liquid water will produce white gas.

There is also a kind of white gas, that is, we can see a white patch on the water surface in winter, because at a very low temperature, the water has some ice in a solid form, but these ice will slowly sublimate into gaseous water, so we will see a white patch on the water surface. You can go outside and observe how the form of water changes and what phenomena it will have.

When the water reaches a temperature of 100 degrees Celsius, some of it will turn into water vapor and slowly evaporate.

Those white gases are water vapors, and the liquid water vaporizes at a certain temperature, forming small water mist. Many small mist gathered together and came out of the spout, and it looked like white water vapor.

That's because the water in the pot has reached a high temperature of 100°, but the indoor temperature is not so high, and this white gas will be produced when the cold and heat intersect, which is caused by the huge temperature difference between the inside and outside of the pot.

When the water is boiled, a lot of white gas comes out, and this is because after the high temperature, the liquid water becomes gaseous and then comes out of the spout, which is the only outlet of the kettle.

The needle is good, the maker problem has finally been found, hahaha.