Defintions Flashcards
Energy
the capacity to do work
Work
The result of a force acting through a distance
Heat
the flow of energy caused by temperature difference
Kinetic Energy
the energy associated with motion
thermal energy
associated with temperature.
potential energy
associated with the position of an object.
chemical energy
associated with the relative positions of electrons
system
tracks energy changes
surroundings
everything with which the system can exchange energy
thermodynamics
general study of energy and its interconventions.
internal energy(E)
sum of the kinetic and potential energies of all the particles.
Bomb Calorimeter
measures E for combustion reactions.
enthalpy (H)
the sum of its internal energy and the product of its pressure and volume.
exothermic reaction
gives off heat.
endothermic reaction
absorbs heat from its surroundings.
