Thermodynamics Major Quiz

In the lab, a student places a 5 kg container of water on a hot plate. The heating of the water is constant. The student records the temperature and graphs it as a function of time on the graph below. Which point on the graph has the lowest entropy level?

• A

• B

• D

• E

A student is cooking an egg in a pan on a stovetop. What is the main method of heat transfer between the pan and the egg?

• conduction

• convection

• entropy

• radiation

A student decides to buy a new car and remembers from physics class that heat engines have a thermal efficiency that can be calculated. He asks the car dealer for a car that has a high thermal efficiency rating. The dealer says he has a car that is 100% efficient. Which law of thermodynamics best describes why the car cannot be 100% efficient?

• The Zeroth Law of Thermodynamics

• The First Law of Thermodynamics

• The Second Law of Thermodynamics

• The Third Law of Thermodynamics

A tray filled with ice is removed from the freezer. After a short period of time, the ice begins to melt. As the ice melts, it _________________

• decreases in specific heat capacity

• decreases in temperature

• increases in temperature

• increases in entropy

A student is investigating the relationship between pressure, temperature, and entropy. A student manages to obtain a sample of ice, water, and water vapor that all coexist at the same temperature, called the triple point. Which will have the greatest entropy at the triple point?

• Solid

• liquid

• gas

• Solid