Thermochemistry
Subject:
Chemistry [1]
Thermochemistry heat a form of energy that is transferred in a difference of temperature Such energy transfer can occur in three ways: radiation, conduction, and convection Expressed in the unit of joules : 1 cal = 4.184 J The specific heat (s) [most books use lower case c] of a substance is the amount of heat (q) required to raise the temperature of one gram of the substance by one degree Celsius. The heat capacity (C) of a substance is the amount of heat (q) required to raise the temperature of a given quantity (m) of the substance by one degree Celsius. q = c ? m ? ?t CALORIMETER- insulated device used for measuring the amount of heat absorbed or released during a chemical or physical process. tHERMOCHEMIstry and Thermochemical EQUATIONS