Class 9 first chapter in Science Matter in our surroundings Difference between Evaporation and boiling ...... pls answer
Answers
Comparison Chart
BASIS FOR COMPARISON BOILING EVAPORATION
Meaning Boiling implies a vaporization process that turns liquid into gas, when continuously heated.
Evaporation is a natural process, wherein the liquid changes its form to gas due to the increase in temperature or pressure.
Phenomenon Bulk Surface
Temperature required Occurs only at boiling point. Occurs at any temperature.
Bubbles It forms bubbles It does not forms bubbles.
Energy Source of energy is required. Energy is supplied by the surrounding.
Temperature of liquid Remains constant Reduces
Evaporation:
Definition:
"Evaporation is the changing of liquid into vapours from the surface of liquid without heating it."
Temperature:
Evaporation takes place at all temperature.
Place of Occurance:
Evaporation occurs only from the surface of liquid.
Boiling:
Definition:
"Boiling is the rapid vapourization of liquid into vapours at the boiling point of liquid,the temperature at which vapour pressure of liquid becomes equal to atmospheric pressure."
Temperature:
Boiling occurs at a fixed temperature called Boiling Point of liquid.
Place of Occurance:
Boiling occurs from the surface of liquid as well as within the liquid.