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