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Thermodynamics Questions - All Grades

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Grade 6 Thermodynamics
What is the difference between temperature and heat?
  1. Temperature is measured by a thermometer, and heat is measured by a barometer
  2. Heat is measured in calories and temperature is measured in joules
  3. Temperature measures the motion of molecules, and heat is the energy of that motion
  4. Heat is caused by the sun, and temperature is caused by conditions in the atmosphere.
Grade 6 Thermodynamics
Compared with the Pacific Ocean, a cup of hot chocolate has
  1. more thermal energy and a higher temperature.
  2. less thermal energy and a higher temperature.
  3. more thermal energy and a lower temperature.
  4. less thermal energy and a lower temperature.
Grade 11 Thermodynamics
The First Law of Thermodynamics is another version of the law of                        .
  1. conservation of entropy
  2. conservation of energy
  3. perpetual motion
  4. enthalpy
Grade 11 Thermodynamics
The Kinetic Molecular Theory of gases describes a gas as a large number of small particles (atoms or molecules), all of which are
  1. at rest.
  2. in constant random motion.
  3. in thermodynamic equilibrium.
  4. in static equilibrium.
Grade 11 Thermodynamics
Entropy can be considered a measure of                 .
  1. order
  2. disorder
  3. state functions
  4. process funtions
Grade 12 Thermodynamics
According to second law of thermodynamics, heat energy cannot be completely converted into useful work owing to
  1. the entropy of the system
  2. the enthalpy of the system
  3. the internal energy of the system
  4. the translational energy of the system
Grade 11 Thermodynamics
Which situation is a good example of the transfer of energy through radiation?
  1. A fan cools the CPU in a computer.
  2. Energy passes from one person’s hand to another person when they shake hands.
  3. Warm air that is less dense rises to the ceiling of a room.
  4. A snake’s body temperature increases when the snake lies in the sun.
College Thermodynamics
Which of the following can be used to calculate entropy changes in reactions?
  1. [math]∆Gº_{reaction}=∑n_{r}∆Gº_f{"reactants"}-∑n_{p}∆Gº_f{"products"}[/math]
  2. [math]∆Gº_{reaction}=∑n_{r}∆Gº_f{"reactants"}+∑n_{p}∆Gº_f{"products"}[/math]
  3. [math]∆Gº_{reaction}=∑n_{p}∆Gº_f{"products"}-∑n_{r}∆Gº_f{"reactants"}[/math]
  4. None of the above
Grade 11 Thermodynamics
Which of these is an assumption of Kinetic Molecular Theory?
  1. There are constant forces of attraction between the molecules.
  2. There are constant forces of repulsion between the molecules.
  3. There are constant forces of attraction and repulsion between the molecules.
  4. There are no attractive or repulsive forces between the molecules.
Grade 11 Thermodynamics
According to Kinetic Molecular Theory, gas pressure is due to
  1. the mass of particles.
  2. the collisions of particles on the walls of a container.
  3. the forces of repulsion between the particles.
  4. the energy loss experienced by each particle.
Grade 12 Thermodynamics
Which of the following equations is used to represent the First Law of Thermodynamics for a closed system, according to the IUPAC convention?
  1. [math]DeltaU=Q+W[/math]
  2. [math]DeltaU=W-Q[/math]
  3. [math]DeltaU=Q-W[/math]
  4. [math]DeltaU=Q+2W[/math]
Grade 12 Thermodynamics
Grade 12 Thermodynamics
If [math]DeltaS[/math] denotes entropy change, then what is the entropy change for a reversible adiabatic process?
  1. [math]DeltaS = 0[/math]
  2. [math]DeltaS = 1[/math]
  3. [math]Delta S < 1[/math]
  4. [math]DeltaS >1[/math]
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