1.1 Flashcards
What is energy
Capacity to do work
Exothermic
Energy is lost to surrounding, so temp of surrounding increases
Endothermic
Energy is absorbed from surrounding to system, surrounding loses energy so temp decreases
OG source of energy
Sun
Energy in reactants vs products
R- endo
P- exo
Kinetic Energy in relationship to Temperature
Average temp of gas particle is directly proportional to eK
Temperature is measure of AVERAGE eK in system
Thermal energy
TOTAL eK in system
Difference between temp and thermal energy
TE- Total
T- Average
Specific heat capacity
Energy needed to raise temp of a unit of mass by one Celsius
Heat
Measure of thermal energy
Any change in temp is change in thermal energy
State change is also change in thermal energy
Heat
Measure of thermal energy
Any change in temp is change in thermal energy
State change is also change in thermal energy
Potential energy
Stored in intramolecular bonds or intermolecular forces
Bonds breaking and new bonds forming=eP
eK vs eP
P- phase change but no temp change
K- temp change
Enthalpy
Total eK and eP in system at constant pressure
