EVAPORATION--- 1. it is not required temperature 2. it not released energy 3. it is surface phenomenon. BOILING-- 1. it is required temperature 2. it release energy 3. it is through out phenomenon.

Evaporation and boiling are both processes of converting a liquid into a gas. However, there are some key differences between the two processes. Let's explore them in detail:

**Evaporation:**

Evaporation is a process by which a liquid changes into a gas at a temperature below its boiling point. It occurs at the surface of the liquid when the molecules gain enough energy to escape from the liquid phase and become a gas. Here are some important points about evaporation:

1. **Temperature:** Evaporation occurs at any temperature, even below the boiling point of the liquid.
2. **Speed:** Evaporation is a relatively slow process as it takes place only at the surface of the liquid.
3. **Heat Transfer:** Evaporation causes cooling because it absorbs heat from the surroundings to provide the energy required for the liquid molecules to escape.
4. **Bubbles:** In evaporation, bubbles do not form as the process is not vigorous enough to create vapor bubbles throughout the liquid.
5. **Example:** An example of evaporation is the drying of clothes when they are hung out to dry. The water on the clothes slowly evaporates into the surrounding air.

**Boiling:**

Boiling is a process in which a liquid changes into a gas rapidly throughout the entire liquid at a specific temperature called the boiling point. It involves the formation of vapor bubbles within the liquid. Here are some important points about boiling:

1. **Temperature:** Boiling occurs at a specific temperature, known as the boiling point, which is different for each substance. It is the temperature at which the vapor pressure of the liquid equals the atmospheric pressure.
2. **Speed:** Boiling is a rapid process as it occurs throughout the entire liquid, not just at the surface.
3. **Heat Transfer:** Boiling requires the addition of heat to the liquid to provide the energy necessary for the vaporization process.
4. **Bubbles:** Boiling is characterized by the formation of vapor bubbles within the liquid, which rise to the surface and release the gas into the atmosphere.
5. **Example:** An example of boiling is the process of heating water in a kettle. As the water reaches its boiling point, it rapidly turns into steam, and bubbles are visible throughout the liquid.

In summary, while both evaporation and boiling involve the conversion of a liquid into a gas, they differ in terms of temperature, speed, heat transfer, and the formation of bubbles. Evaporation occurs at any temperature, is slower, causes cooling, and does not produce bubbles throughout the liquid. On the other hand, boiling occurs at a specific temperature, is rapid, requires heat input, and involves the formation of vapor bubbles within the liquid.