All Flashcards
What is the effect of adding heat to a closed system?
Increases the internal energy of the system, potentially leading to an increase in temperature or work done by the system.
What is the effect of doing work on a gas by compressing it?
Increases the internal energy of the gas, potentially leading to an increase in temperature.
What happens to the internal energy during an isothermal process?
The internal energy remains constant because the temperature is constant ().
What happens to the heat exchange during an adiabatic process?
There is no heat exchange with the surroundings (Q = 0).
What is the effect of a clockwise cycle on a PV diagram?
Net work done by the system is negative.
What is the effect of a counterclockwise cycle on a PV diagram?
Net work done by the system is positive.
On a PV diagram, what does the area under the curve represent?
The work done during the process.
On a PV diagram of a cycle, what does the area inside the loop represent?
The net work done during the cycle.
What is the definition of thermal equilibrium?
A state where two or more objects in contact have reached the same temperature, and there is no net heat flow between them.
What is internal energy?
The total energy of the molecules within a substance, including kinetic and potential energy.
What is heat in thermodynamics?
Energy transferred due to a temperature difference between two systems or objects.
What is work in thermodynamics?
Energy transferred when a force acts over a distance, often associated with changes in volume and pressure of a gas.
Define an isobaric process.
A thermodynamic process that occurs at constant pressure.
Define an isochoric process.
A thermodynamic process that occurs at constant volume.
Define an isothermal process.
A thermodynamic process that occurs at constant temperature.
Define an adiabatic process.
A thermodynamic process where no heat is exchanged with the surroundings (Q = 0).