Entropy
What is the symbol for entropy?
S or dS
What is the symbol for work?
w
What is internal energy?
The energy flow of the perspective of a chosen system
What is Enthalpy?
The sum of all energies
The total accessible energy in a system
What does it mean to have positive entropy?
For there to be unattainable energy leaving the system due to chaos
What is the symbol for heat?
q
What is the symbol for internal energy?
dU or U
What is the symbol for Enthalpy?
H or dH
What is the symbol for Gibbs free energy
G or dG
What does it mean to have negative entropy?
For outside energy to be added into the system to ensure order
w = F x dV
q = m x Cs x dT
What does it mean to have a positive work or heat value in regards to internal energy
That work is being done on the system
That heat is being added to the system
If the pressure of my system goes up at a constant volume then what happens to the value of my enthalpy?
It goes up as well
What two things are going to result in a typical decrease in enthalpy which will result in Gibbs free energy?
The temperature resulting from the chaotic entropy.
What is the natural entropy state of the universe?
Positive entropy or chaos
What do the symbols F and dV represent
F = force
dV = displacement or a change in volume
What does it mean to have a negative work or heat value in regards to internal energy
That heat is leaving the system
To find enthalpy you must know the internal energy. But what are you comparing the internal energy to to find the enthalpy?
Pressure and Volume
What does it mean to have a positive Gibbs free energy?
That there is stored and accessible energy in the system. Like having saved money in a bank account that you can spend.
Give me an example of how entropy can be viewed in the real world.
Natural disasters, friction, heat loss, etc...
What do the symbols m, Cs, and dT represent.
m = mass
Cs = specific heat
dT = change in temperature
What does it mean to have a positive internal energy?
It means that energy in the system is staying in the system rather then leaving.
What does it mean to have a negative enthalpy?
That energy is leaving the system typically seen as an exothermic process
What does it mean to have negative Gibbs free energy
For there to be a easy release of energy from the system. This is typically seen as chemical reactions that will be very spontaneous once they occur with a high output of energy.