16 Questions
Which best defines the internal energy (E) of a system according to the text?
The total energy of a system, including kinetic and potential energies
What is the best example of a thermodynamic system according to the text?
The Earth's atmosphere
What is the transfer of thermal energy between two bodies at different temperatures called?
Heat
Which term refers to the state of the system with a definite value of dependent variable?
Thermodynamic state
What is the transfer of energy used to change the height of a weight of a system in respect to the surroundings called?
Work
Which term describes the surroundings of a system?
Surroundings
According to the Zero Law of Thermodynamics, what does it state about systems in thermal equilibrium?
They have the same temperature
What does the First Law of Thermodynamics state about energy?
Energy cannot be created nor destroyed under any circumstances
What is the equation for the change in internal energy in a closed system?
$ΔE=Q+W$
What does the increase in enthalpy, ∆H, represent?
The heat absorbed by the system at constant volume
What does the Second Law of Thermodynamics state about the flow of heat?
Heat always flows from a hotter body to a colder body
What is entropy a measure of?
Disorder or randomness in a system
What does a positive ΔH indicate for a reaction?
The reaction absorbs heat from the environment (endothermic)
What does ΔG indicate if its value is less than 0?
The process occurs spontaneously
What does a negative ΔG imply for a process?
The process occurs spontaneously
What does the Second Law of Thermodynamics state about the entropy of the entire universe?
Entropy in the universe can never be negative
Test your knowledge of thermodynamics in physical pharmacy with this quiz by Dr. Khalid T Maaroof. Explore concepts such as energy flow, transformation, control of chemical reactions, spontaneity of reactions, and forms of energy.
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