Thermodynamics

Thermodynamics process in which the temperature remains constant is known as

• isobaric process

• isochoric process

• isovolumetric process

• isothermal process

1200 J of heat are added to a sample of gas while the gas does 400 J of work on the environment. What is the change in internal energy of the gas?

• 800 J

• 1600 J

• -800 J

• -1600 J

During process A, from state 1 to state 2, the temperature of the ideal gas

• stays the same

• increases

• decreases

• is half as much

During an adiabatic process, a sample of gas does 400 J of work on the environment. What change occurs with the internal energy of the gas?

• The internal energy increases by 400 J.

• The internal energy doesn't change.

• The internal energy decreases by 400 J.

• There is not enough information if we don't know how much heat was added or removed.

Process B on the PV diagram is an ______________ process.

• adiabatic

• isobaric

• isochoric

• isothermal

The first law of thermodynamics states that the change in the internal energy of a system is equal to the difference in energy transferred to or from the system as heat and

• mass
• work done
• force
• pressure

A thermodynamic system where no exchange of heat takes place between system and surrounding is...

• Isothermal process

• Adiabatic process

• Isobaric process

• Isochoric process

When applying the first law of thermodynamics to a system, when is heat a positive quantity?

• when the system does work
• when the system has work done on it
• when the system absorbs heat
• when the system loses heat
• when no work is done either on the system or by the system

For an isovolumetric process, which of the following statements is correct?

• a. Work, heat, and internal energy all undergo changes.

• b. Work and heat balance each other, so that there is no change in internal energy.

• c. No energy is transferred as heat; internal energy change is due to work.

• d. No work is done; internal energy change is due to heat.

For an isothermal process, which of the following statements is correct?

• a. Work, heat, and internal energy all undergo changes.

• d. No work is done; internal energy change is due to heat.

• c. Work and heat balance each other, so that there is no change in internal energy.

• d. No energy is transferred as heat; internal energy change is due to work.