Thermodynamics Modules

Question 1

As a scientist, we pick a specific part of the world that we are interested in and we call it “the _________.”

Answer 1

system

Question 2

An airtight greenhouse would be a rough example of a(n) _______ system.

Answer 2

closed

Question 3

Which of the following is true of a general thermodynamic state function?

Answer 3

The change of the value of a state function is independent of a path of a process.

Question 4

Which of the following is not a state function?

Answer 4

heat (q)

Question 5

Which of the following measurements is of an intensive property?

Answer 5

100 Kelvin (temperature)

Question 6

Which of the following properties of a substance does not change when the amount of the substance changes?

Answer 6

temperature

Question 7

The first law of thermodynamics states that ________ is conserved.

Answer 7

energy

Question 8

A CD player and its battery together do 500 kJ of work. In addition, the battery releases 250 kJ of energy as heat. Furthermore, the CD player releases 50 kJ as heat due to friction from spinning. What is the change in internal energy of the system, where the system is regarded as the battery and CD player together.

Answer 8

-800 kJ

Question 9

monatomic gas

Answer 9

(3/2)RT

Question 10

linear gas molecule

Answer 10

(5/2)RT

Question 11

nonlinear gas molecule

Answer 11

3RT

Question 12

When a system “does work” it will impart organized molecular motion in the surroundings such that molecules are moving __________.

Answer 12

in the same direction

Question 13

Water has a heat capacity that is approximately ten times larger than the heat capacity of copper metal. Assuming 100 J of energy is deposited into equal masses of the two materials as heat energy, what is true about the change in temperature?

Answer 13

The temperature change for Cu will be 10-fold higher than that for water.