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Samuels CHEM Thermodynamics
Test Description: Thermodynamics
Instructions: Answer all questions to get your test result.
1) Heat usually flows from
A
high to low
B
cold to hot
C
warm to warmer
D
hot to cold
2) The second law of thermodynamics describes a gradual increase in disorder for the universe. This is known as
A
heat of fusion
B
gibbs free energy
C
entropy
D
enthalpy
3) During the change in state from liquid water to a water vapor gas, what happens to heat energy?
A
heat is released
B
heat does not change
C
heat is both absorbed and released
D
heat is absorbed
4) What is defined as the ability to do work?
A
pressure
B
force
C
energy
D
mass
5) In an exothermic reaction, the change in enthalpy is
A
negative
B
neutral
C
the same
D
positive
6) If you wanted to measure the heat flow during a chemical reaction, what instrument would you use?
A
calorimeter
B
manometer
C
barometer
D
thermometer
7) The heat per unit mass required to vaporize a substance at its normal boiling point.
A
heat of vaporization
B
enthalpy of formation
C
heat of precipitation
D
heat of fusion
8) In thermodynamics, the part of the universe that is being studied is the ____ and everything outside of it is the _____.
A
surroundings; system
B
system; surroundings
C
focus; environment
D
part; whole
9) The type of energy associated with motion
A
kinetic energy
B
radiant energy
C
electromagnetic potential energy
D
potential energy
10) The amount of heat required to cause a unit rise in temperature of a unit mass of a substance
A
specific heat
B
heat of fusion
C
heat of vaporization
D
heat capacity
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