Question

9th class chemistry Difference between boiling and evaporation. three-three points .​

Answer 1

Answer:

Evaporation takes place at all temperatures, while boiling occurs at a particular temperature. ... Evaporation takes place from the surface, whereas the entire liquid boils. 3. Evaporation can occur using the internal energy of the system, while boiling requires an external source of heat.

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Answer 2

Evaporation:

1. the process of escaping of molecules from the surface of a liquid at any temperature is called evaporation

2.it is a cooling process

3.temperature of system falls during evaporation

4.evaporation takes place at any temperature

5.when the evaporation process starts,the temperature of system decreases.

Boiling:

1.the process in which the liquid phase changes into gaseous phase at a constant temperature is called boiling

2.it is a heating process

3.temperature of system remains constant during this process

4.boiling occurs at a definite temperature

5.when the boiling process starts the temperature of the liquid cannot be raised

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