unit 6 vocab Flashcards
endothermic
a reaction that takes heat from the surroundings
endo- heat ENTERS the reaction. feels cold
heat
the energy that moves from high to low temperature objects
potential energy
due to position of composition, can be converted into work
ex. water behind a dam
kinetic energy
due to the motion of an object
KE= 1/2 mv^2
system
the part we pay attention to
surroundings
everything else
exothermic
reaction that puts heat into the surroundings
exo- heat EXITS the system
feels warm
specific heat capacity (c)
heat absorbed per gram
J/C or J/Kg
molar heat capacity
heat capacity per mole
J/Cmol or J/Kmol
heat capacity (Cp)
heat absorbed per degree
J/C or J/K
law of conservation of energy
energy can be converted from one form to another, but not created or destroyed
specific heat of water
4.184 J/gC
thermodynamics
general study of energy and its introconversions
state function
its value only depends on the state of the system and not how it got there
enthalpy (H)
sum of the internal energy in a system and the product of its pressure and volume. also heat per mole
