Thermodynamics notes Flashcards
Energy
Capacity to do work
Work
Directed energy change
Thermochemistry
Study of heat change in chemical reactions
Heat
The transfer of thermal energy between two bodies of different temperatures
System
Part of the universe in interest
Open system
Exchanges mass + energy with surroundings
Closed system
Exchanges energy only
Isolated system
No exchange of any kind
Endothermic
Gives off heat
Exothermic
Takes heat in
Thermodynamics
The study of the inner conversion of heat + other types of energy
State function
Property independent of the process to get there
Work
force x distance
Enthalpy
H = E+PV
Carloimetry
Measuring heat changes
Specific heat
Amount of heat required to raise the temp. of 1g of a substance by 1 C
Heat capacity
Amount of heat required to raise the temp. of a given quantity by 1 C
Constant pressure calorimetry
Assume an isolated system
Often neglect the small heat capcity of the container
