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