the heat associated with a chemical reaction experimentally byusing a device called a calorimeter. Calorimetry, the science ofmeasuring heat, is based on observing the temperature changewhen a body absorbs or discharges energy as heat.` If the heat capacity is given per gram of substance, it is called thespecific heat capacity with units of J K–1 g–1 or J °C–1 g–1.` Specific heat capacity: The energy required to raise thetemperature of 1 g of a substance by 1°C. If the heat capacity isZumdahl/Decoste | Chemical Principles, 8e, © 2017 Cengage Learning 31given per mole of the substance, it is called the molar heat capacity.` Molar heat capacity: The energy has the units J K–1 mol–1 orJ °C–1 mol