he difference between boiling and evaporation lies in the conditions under which each process occurs and the characteristics of each process:

1. Boiling:
   • Temperature: Boiling occurs at a specific temperature known as the boiling point, which is different for each substance (e.g., 100°C for water at sea level).
   • Occurrence: Boiling happens throughout the entire liquid. Bubbles of vapor form within the liquid and rise to the surface.
   • Energy: It requires an external heat source to provide the energy needed for the liquid to reach its boiling point.
   • Pressure: Boiling is influenced by atmospheric pressure; at higher altitudes, where atmospheric pressure is lower, the boiling point of a liquid decreases.
   • Rate: Boiling is typically a rapid process once the boiling point is reached.
2. Evaporation:
   • Temperature: Evaporation can occur at any temperature, though it happens more quickly at higher temperatures.
   • Occurrence: Evaporation occurs only at the surface of the liquid. Molecules at the surface gain enough energy to escape into the gas phase.
   • Energy: It does not require an external heat source; instead, it relies on the kinetic energy of individual molecules at the surface of the liquid.
   • Pressure: Evaporation is less influenced by atmospheric pressure compared to boiling, though lower humidity can speed up the evaporation process.
   • Rate: Evaporation is generally a slower process and occurs over a longer period of time compared to boiling.