Some key points are
1) Evaporation takes internal energy while for boiling we have to provide external energy or we have to reduce the pressure.
2) As Evaporation takes internal energy therefore evaporation results in cooling while this is not observed in boiling.
3) Evaporation occurs below saturated temperature while Boiling occurs at and above saturated temperature.
4) Evaporation occurs at liquid-vapor interface while Boiling occurs at solid liquid interface.
5) Vapor bubbles are formed in Boiling while in Evaporation there are no bubble formation and no bubble motion.
6) There are different regimes of boiling (like nucleate boiling, transition boiling, film boiling etc.) while these regimes are not present in Evaporation.
7) Rate of Evaporation is much slower than the Boiling.
8) Example of Evaporation are
Water in a lake at 20°C, evaporates to air at 20°C and 60 percent relative humidity since the saturation pressure of water at 20°C is 2.34 kPa, and the vapor pressure of air at 20°C and 60 percent relative humidity is 1.4 kPa. Other examples of evaporation are the drying of clothes, fruits, and vegetables; the evaporation of sweat to cool the human body; and the rejection of waste heat in wet cooling towers.
i am hoping that the above comparison will give you the clear picture about the evaporation and boiling.
Evaporation is completely natural. Boiling isn't. Hopefully this helps.
Evaporation is one of the 3 types of boiling.
Evaporation is the process of a liquid turning into a gas at the surface, while boiling is the process of a liquid turning into a gas throughout the entire substance due to the application of heat.
Boiling is a greatly expedited form of evaporation. When you heat something to its boiling point, it has enough energy for its molecules to rapidly escape. Evaporation is a much slower action, generally. It is just molecules at the surface gaining enough energy to escape. Both evaporation and boiling are endothermic processes. They will cool what ever the molecules are escaping from.
i think that u were asking about the difference between evaporation and boiling. Some key points are 1) Evaporation takes internal energy while for boiling we have to provide external energy or we have to reduce the pressure. 2) As Evaporation takes internal energy therefore evaporation results in cooling while this is not observed in boiling. 3) Evaporation occurs below saturated temperature while Boiling occurs at and above saturated temperature. 4) Evaporation occurs at liquid-vapor interface while Boiling occurs at solid liquid interface. 5) Vapor bubbles are formed in Boiling while in Evaporation there are no bubble formation and no bubble motion. 6) There are different regimes of boiling (like nucleate boiling, transition boiling, film boiling etc.) while these regimes are not present in Evaporation. 7) Rate of Evaporation is much slower than the Boiling. 8) Example of Evaporation are Water in a lake at 20°C, evaporates to air at 20°C and 60 percent relative humidity since the saturation pressure of water at 20°C is 2.34 kPa, and the vapor pressure of air at 20°C and 60 percent relative humidity is 1.4 kPa. Other examples of evaporation are the drying of clothes, fruits, and vegetables; the evaporation of sweat to cool the human body; and the rejection of waste heat in wet cooling towers. i am hoping that the above comparison will give you the clear picture about the evaporation and boiling.
Evaporation and boiling are similar because both of them allow water to go through a physical change and have the water turn into a gas, by gaining energy.
It can be called either boiling or evaporation.
Both boiling and evaporation are forms of vaporization. Vaporization is the process in which a liquid turns into a gas. Boiling is when vaporization occurs throughout the entire liquid, while evaporation is when vaporization occurs only at the surface of the liquid.
i think that u were asking about the difference between evaporation and boiling. Some key points are 1) Evaporation takes internal energy while for boiling we have to provide external energy or we have to reduce the pressure. 2) As Evaporation takes internal energy therefore evaporation results in cooling while this is not observed in boiling. 3) Evaporation occurs below saturated temperature while Boiling occurs at and above saturated temperature. 4) Evaporation occurs at liquid-vapor interface while Boiling occurs at solid liquid interface. 5) Vapor bubbles are formed in Boiling while in Evaporation there are no bubble formation and no bubble motion. 6) There are different regimes of boiling (like nucleate boiling, transition boiling, film boiling etc.) while these regimes are not present in Evaporation. 7) Rate of Evaporation is much slower than the Boiling. 8) Example of Evaporation are Water in a lake at 20°C, evaporates to air at 20°C and 60 percent relative humidity since the saturation pressure of water at 20°C is 2.34 kPa, and the vapor pressure of air at 20°C and 60 percent relative humidity is 1.4 kPa. Other examples of evaporation are the drying of clothes, fruits, and vegetables; the evaporation of sweat to cool the human body; and the rejection of waste heat in wet cooling towers. i am hoping that the above comparison will give you the clear picture about the evaporation and boiling.
Vaporization at the surface of a liquid that is not boiling is called evaporation. It is a process in which molecules of a liquid escape into the gas phase without the liquid reaching its boiling point. Evaporation occurs at temperatures below the boiling point of the liquid.
Evaporation is very slow at converting liquid to gas compared to boiling.
Boiling occurs more quickly than evaporation. Boiling is the rapid vaporization of a liquid when it is heated to its boiling point, whereas evaporation is the slower process of a liquid turning into a gas at temperatures below its boiling point.