A) DEFINITION : heat is a form of energy. it measured in calories and B.T.U(Fahrenheit = 1 b.t.u )
B) UNITS:
CALORY : THE AMOUNT OF HEAT REQUIRE TO RAISE 1 DEGREE TEMP OF 1 GRAM WATER IS CALLED 1 CALORY.
B.T.U : ENERGY REQUIRE TO RAISE 1 DEGREE TEMP OF 1 POUND WATER ..
(1 B.T.U = 1 FAHRENHEIT )
C) SPECIFIC HEAT : ENERGY REQUIRED TO RAISE 1 DEGREE OF ANY 1 gm SUBSTANCE.
D) LATENT HEAT : 1. LATENT HEAT OF VAPORIZATION.
2. LATENT HEAT OF FREEZING
B) UNITS:
CALORY : THE AMOUNT OF HEAT REQUIRE TO RAISE 1 DEGREE TEMP OF 1 GRAM WATER IS CALLED 1 CALORY.
B.T.U : ENERGY REQUIRE TO RAISE 1 DEGREE TEMP OF 1 POUND WATER ..
(1 B.T.U = 1 FAHRENHEIT )
C) SPECIFIC HEAT : ENERGY REQUIRED TO RAISE 1 DEGREE OF ANY 1 gm SUBSTANCE.
D) LATENT HEAT : 1. LATENT HEAT OF VAPORIZATION.
2. LATENT HEAT OF FREEZING
LATENT HEAT OF VAPORIZATION. : amount of heat required to conver 1 gm of water in to vapor is called lattent heat of vaporization of water.(at 100 degree , 540 calories/gm needed for water)
LATENT HEAT OF FREEZING : amount of heat required to conver 1 gm of water in to solid ice is called lattent heat of vaporization of water.(at 0 degree , 80 calories/gm needed to convert water to ice)