18 Questions
What is the term for the pressure of the vapor phase of a substance that is in equilibrium with the liquid or solid phase?
Equilibrium Vapor Pressure
What is the physical quantity that determines the slope of a phase diagram?
Temperature
What is the term for the amount of heat required to change the temperature of 1 gram of water by 1 Celsius degree?
Specific Heat
What is the term for the grand total of all energies inside a substance?
Internal Energy
If a temperature is changed from 20˚C to 30˚C, what is the equivalent change in Kelvin?
293 K to 303 K
What is the term for a thermodynamic potential that measures the 'useful' work obtainable from a closed thermodynamic system at a constant temperature and volume?
Helmholtz Free Energy
What is the change in length of a 1.0 km section of concrete highway if the temperature varies from -15°C in winter to 41°C in summer?
0.47 m
What is the upper limit of efficiency for a simple steam engine receiving steam from a boiler at 180°C and exhausting directly into the air at 100°C?
36.77 %
Which type of heat causes a change in temperature of a substance?
Sensible heat
What is the gap that should be left between two 12 ft sections of aluminum siding to prevent buckling if the temperature can change by 55°C?
0.21 m
Who coined the term 'latent heat'?
Joseph Black
What is the thermodynamic potential that measures the 'useful' or process-initiating work obtainable from an isothermal, isobaric thermodynamic system?
Gibbs free energy
Which of the following cannot be measured by a thermometer?
Specific Heat
What is the final state of all the energy we consume?
heat
One calorie is equal to how many Watt-hours?
1/860 W.h
What is the term for the transition of a substance from the solid to the gas phase with no intermediate liquid stage?
Sublimation
What type of process is characterized by the relation pV^n=C, where n is any constant?
Polytropic process
What is the process in which heat energy is transferred by the flow of fluid?
Convection
This quiz covers the concepts of vapor pressure, phase changes, and equilibrium in chemistry. It includes questions on the definition of vapor pressure, factors affecting it, and phase diagrams.
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