Calorimetry
The measurements of the quantity of the heat is called calorimetry.
Heat
Heat is the internal energy of molecules constituting the body. It flows from a hot body to cold body.
Si unit of heat is joule (j)
The amount of heat contained in a body depends upon mass, temperature, and substance of the body.
Heat is measured by the principal of calorimetry.
Two bodies having the same quantity of heat may differ in their temperature.
HEAT CAPACITY
It is an amount of the heat energy required to raise the temperature of the entire body by 1oC.
It is donated by the symbol.C
Its unit is j k-1.
Heat capacity c’ = amount of heat energy supplied / rise in temperature
Specific heat capacity
It is the amount of heat energy required to raised the temperature of a unit mass of the body by 1oC.
It does not depend on the mass of the body, but it is the characteristic property of the substance of the body.
Specific heat capacity c = heat capacity of body C’ /mass of the body.
Its unit is J Kg-1 k-1.
Temperature
Temperature is a quantity which determines the direction of flow of heat on keeping the two bodies at different temperatures in contact.
The SI unit of temperature is (k).
The temperature of the body depends on the average kinetic energy o its molecules due to their random motion.
Temperature is measured by the thermometer.
When two bodies at different temperatures are placed in contact, the resultant temperature is a temperature in between the two temperatures.
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