CHEM300B Unit V exam ACTUAL
QUESTIONS AND CORRECT ANSWERS
All of the following except one are forms of matter - CORRECT
ANSWERS electronegativity
Which of the following is the correct statement about the effects of temperature (T) on the
average kinetic energy of gas particles (KE)? - CORRECT ANSWERS Decrease in T --)
decrease in KE
The forces of attraction between molecules of an ideal gas are - CORRECT
ANSWERS non-existent
The kinetic-molecular theory assumes that - CORRECT ANSWERS molecules are always
in motion
Gas molecules are far apart. True or False? - CORRECT ANSWERS True
An ideal gas is an imaginary gas. True or False? - CORRECT ANSWERS True
The kinetic-molecular theory only applies to gases. True or False? - CORRECT
ANSWERS False
Collisions between gas molecules result in loss of kinetic energy. True or False? - CORRECT
ANSWERS False
Pressure equals - CORRECT ANSWERS force/area
,The earth's atmosphere exerts pressure because - CORRECT ANSWERS gravity pulls gas
molecules down
A heavier rock exerts more pressure on the ground than a lighter rock. True or False? -
CORRECT ANSWERS True
Gas pressure would result from collisions of gas molecules with the sides of a container. True or
False? - CORRECT ANSWERS True
A barometer is used to measure - CORRECT ANSWERS atmospheric pressure
Only one of the following is not used to measure air pressure - CORRECT
ANSWERS sphygmomanometer
Evangelista Torricelli invented the barometer. True or False? - CORRECT
ANSWERS True
The mmHg is the standard unit of pressure. True or False? - CORRECT ANSWERS False
Convert 93.2 kPa to mm Hg - CORRECT ANSWERS 93.2 kPa x 760 mm Hg/101.3 kPa =
699 mm Hg
Convert 698 torr to kPa - CORRECT ANSWERS 698 torr×101.3 kPa/760 torr = 93.0 kPa
Convert 107 kPa to atm - CORRECT ANSWERS 107 kPa×1 atm/101.3 kPa = 1.06 atm
, Convert 0.900 atm to mmHg - CORRECT ANSWERS 0.900 atm×760 mmHg/1 atm=684
mmHg
One of the following statements about absolute zero is not true - CORRECT
ANSWERS absolute zero is the temperature at which there is no electron movement
The kinetic energy of particles in a sample of NaCl - CORRECT ANSWERS increase with
an increase in temperature
At room temperature, the average kinetic energy of ice is the same as the average kinetic energy
of steam. True or False? - CORRECT ANSWERS True
Absolute zero has been reached in the laboratory. True or False? - CORRECT
ANSWERS False
How does the average kinetic energy of an air sample near a campfire compare to air that is far
away from it? - CORRECT ANSWERS The kinetic energy near the campfire is greater
rather than it is far away.
One of the following statements about gases is incorrect - CORRECT ANSWERS gases
cannot be compressed
One of the following statements about liquids is false - CORRECT ANSWERS liquids can
be compressed
Liquids are much more dense than gases. True or False? - CORRECT ANSWERS True
QUESTIONS AND CORRECT ANSWERS
All of the following except one are forms of matter - CORRECT
ANSWERS electronegativity
Which of the following is the correct statement about the effects of temperature (T) on the
average kinetic energy of gas particles (KE)? - CORRECT ANSWERS Decrease in T --)
decrease in KE
The forces of attraction between molecules of an ideal gas are - CORRECT
ANSWERS non-existent
The kinetic-molecular theory assumes that - CORRECT ANSWERS molecules are always
in motion
Gas molecules are far apart. True or False? - CORRECT ANSWERS True
An ideal gas is an imaginary gas. True or False? - CORRECT ANSWERS True
The kinetic-molecular theory only applies to gases. True or False? - CORRECT
ANSWERS False
Collisions between gas molecules result in loss of kinetic energy. True or False? - CORRECT
ANSWERS False
Pressure equals - CORRECT ANSWERS force/area
,The earth's atmosphere exerts pressure because - CORRECT ANSWERS gravity pulls gas
molecules down
A heavier rock exerts more pressure on the ground than a lighter rock. True or False? -
CORRECT ANSWERS True
Gas pressure would result from collisions of gas molecules with the sides of a container. True or
False? - CORRECT ANSWERS True
A barometer is used to measure - CORRECT ANSWERS atmospheric pressure
Only one of the following is not used to measure air pressure - CORRECT
ANSWERS sphygmomanometer
Evangelista Torricelli invented the barometer. True or False? - CORRECT
ANSWERS True
The mmHg is the standard unit of pressure. True or False? - CORRECT ANSWERS False
Convert 93.2 kPa to mm Hg - CORRECT ANSWERS 93.2 kPa x 760 mm Hg/101.3 kPa =
699 mm Hg
Convert 698 torr to kPa - CORRECT ANSWERS 698 torr×101.3 kPa/760 torr = 93.0 kPa
Convert 107 kPa to atm - CORRECT ANSWERS 107 kPa×1 atm/101.3 kPa = 1.06 atm
, Convert 0.900 atm to mmHg - CORRECT ANSWERS 0.900 atm×760 mmHg/1 atm=684
mmHg
One of the following statements about absolute zero is not true - CORRECT
ANSWERS absolute zero is the temperature at which there is no electron movement
The kinetic energy of particles in a sample of NaCl - CORRECT ANSWERS increase with
an increase in temperature
At room temperature, the average kinetic energy of ice is the same as the average kinetic energy
of steam. True or False? - CORRECT ANSWERS True
Absolute zero has been reached in the laboratory. True or False? - CORRECT
ANSWERS False
How does the average kinetic energy of an air sample near a campfire compare to air that is far
away from it? - CORRECT ANSWERS The kinetic energy near the campfire is greater
rather than it is far away.
One of the following statements about gases is incorrect - CORRECT ANSWERS gases
cannot be compressed
One of the following statements about liquids is false - CORRECT ANSWERS liquids can
be compressed
Liquids are much more dense than gases. True or False? - CORRECT ANSWERS True
