Ch. 17.1 Vocabulary

thermochemistry
the study of energy changes that occur during chemical reactions and changes in state
chemical potential energy
the energy stored in the chemical bonds of a substance
heat
energy that transfers from one object to another because of temperature difference between them
system
the part of the universe on which you focus your attention
surrounding
everything else in the universe
law of conservation of energy
in any chemical or physical process, energy is neither created or destroyed
endothermic process
a process in which the system absorbs heat as the surroundings cool down
exothermic process
a process in which the system cools down as the surroundings absorb heat
heat capacity
the amount of heat required to increase the temperature of an object exactly 1°C
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