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The process of conversion of matter The process of conversion of matter
from liquid to gas at any temperature from liquid to gas at certain point
less than B.P “Temperature” B.P
It occurs to molecules on the surface of It occurs to all liquid molecules
liquid
It occurs by gaining thermal energy : It occurs by gaining thermal energy :
The surrounding medium/ Heat source
Heat source
It takes long period of time It takes short period of time
NO formation It is accompanied by formation of
of air bubbles (gas in liquid) air bubbles (gas in liquid)
Independent variable (Cause)
The variable that is changed during the experiment.
Dependent variable (Effect)
The variable to be tested which changes in response to changing the independent
Controlled variables
The variables that are controlled to remain constant through the experiment.
First Term 26
