Physics Chp. 9 Practice Test

Which of the following is a direct cause of a substance’s temperature increase?

• Energy is removed from the particles of the substance.

• Kinetic energy is added to the particles of the substance.

• The number of atoms and molecules in a substance changes.

• The volume of the substance decreases.

What happens to the internal energy of an ideal gas when it is heated from 0°C to 4°C?

• It increases.

• It decreases.

• It remains constant.

• It is impossible to determine.

Which of the following is proportional to the kinetic energy of atoms and molecules?

• elastic energy

• temperature

• potential energy

• thermal equilibrium

Which of the following is a form of kinetic energy that occurs within a molecule when the bonds are stretched or bent?

• translational

• rotational

• vibrational

• internal

What are the energies associated with atomic motion called?

• kinetic energy

• potential energy

• bond energy

• internal energy

Which of the following best describes the relationship between two systems in thermal equilibrium?

• No net energy is exchanged.

• The volumes are equal.

• The masses are equal.

• The velocity is zero.

As the temperature of a substance increases, its volume tends to increase due to

• thermal equilibrium.

• thermal energy.

• thermal expansion.

• thermal contraction.

What is the temperature of a system in thermal equilibrium with another system made up of water and steam at 1 atm of pressure?

• 0°F

• 273 K

• 0 K

• 100°C

What is the temperature of a system in thermal equilibrium with another system made up of ice and water at 1 atm of pressure?

• 0°F

• 273 K

• 0 K

• 100°C

If two small beakers of water, one at 70°C and one at 80°C, are emptied into a large beaker, what is the final temperature of the water?

• The final temperature is less than 70°C.

• The final temperature is greater than 80°C.

• The final temperature is between 70°C and 80°C.

• The water temperature will fluctuate.