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AAT Bioquest

What are the differences between evaporation and boiling?

Posted April 14, 2023


Answer

Basis of differentiation 

Evaporation 

Boiling 

Definition 

Evaporation is a natural process in which liquid is vaporized into a gas form

Boiling is a process in which liquid is vaporized when it is heated to its boiling point. 

Occurrence 

Vaporization usually occurs from the surface of the liquid. 

Boiling usually occurs throughout the mass of the liquid on being heated continuously. 

Rate of vaporization 

Rate of vaporization is slow. 

Rate of vaporization is faster 

Presence of bubbling 

Bubbling is absent

Bubbling is present

Dependence on temperature

Evaporation is independent of temperature – it can occur at any temperature

Boiling is highly dependent on temperature – it can occur only when the temperatures reaches the boiling point of the liquid and remains constant

Effect on temperature of the liquid body

Temperature of the liquid body is lowered when evaporation takes place

 

Temperature of the liquid remains constant throughout the boiling process

Examples

- Drying of wet clothes or any wet surface

- Melting ice cubes

- Heating water, oil, or any other liquid using a heating source

Additional resources

Smoothed particle hydrodynamics simulations of evaporation and explosive boiling of liquid drops in microgravity