6.4 Heat Capacity & Calorimetry/ AP CHEM

heat capacity

• energy required/ taken to raise the temp of an object by 1C

• energy released when an object is reduced by 1C

diff substances have diff “heat capacity constants”, varied by structure, composition, amount (larger amount needs more heat)

specific heat capacity

depends on

• type of substance (bond strength, molecular structure, etc)

grams

molar heat capacity

depends on

• quantity

mole

as Cp/cp goes up, more temp (q) can be absorbed; temp goes up by 1C

calorimetry

heat transfer technique

• assumes no loss of heat to container

qmetal = -qH₂O

• qmetal (loosing heat)

• -qH₂O (gaining heat)

heat is transferred

temperature refers to

measure of average thermal energy of a system

heat refers to

energy transferred from a system to its surroundings / (surroundings to system)