Chem 103 Module 5 UPDATED Exam
Questions and CORRECT Answers
gas pressure is caused by... - CORRECT ANSWER -the force exerted by gas molecules
colliding with the surfaces of objects
atmospheric pressure is caused by... - CORRECT ANSWER -the weight of the column of
air molecules in the atmosphere above an object
pressure - CORRECT ANSWER -the force exerted on a given area
P=F/A
unit= Pascal
pascal (Pa) - CORRECT ANSWER -1 Pa = I N/m^2
atmosphere (atm) - CORRECT ANSWER -I atm = 101,325 Pa
kilopascal (kPa) - CORRECT ANSWER -1 kPa = 1000 Pa
pounds per square inch (psi) - CORRECT ANSWER -air pressure at sea level is 14.7 psi
bar (b) - CORRECT ANSWER -1 bar = 100,000 Pa
millibar (mb) - CORRECT ANSWER -1000 mb = 1 b
inches of mercury (in Hg) - CORRECT ANSWER -1 in Hg = 3386 Pa
torr - CORRECT ANSWER -760 torr = 1 atm
, millimeters of mercury (mmHg) - CORRECT ANSWER -1 mm Hg = 1 torr
barometer - CORRECT ANSWER -a glass tube that is closed at one end, filled with a non-
volatile liquid, inverted, and then immersed in a container of that liquid
- the atmosphere exerts pressure on the liquid outside the tube, the weight of the column of liquid
exerts pressure inside the tube and the pressure at the liquid surface is the same inside and
outside the tube
- height of liquid in tube is proportional to the pressure exerted by the atmosphere
Increased Temperature = - CORRECT ANSWER -Increased Pressure
Decreased Temperature = - CORRECT ANSWER -Decreased Pressure
Amonton's Law (P-T relationship for gases) - CORRECT ANSWER -The pressure of a
given amount of gas is directly proportional to its temperature on the kelvin scale when the
volume is held constant
P1/T1 = P2/T2
Increased Temperature = - CORRECT ANSWER -Increased volume
Decreased Temperature = - CORRECT ANSWER -Decreased volume
Charles Law - CORRECT ANSWER -the volume of a given amount of gas is directly
proportional to its temperature on the kelvin scale when the pressure is held constant
V1/T1 = V2/T2
Questions and CORRECT Answers
gas pressure is caused by... - CORRECT ANSWER -the force exerted by gas molecules
colliding with the surfaces of objects
atmospheric pressure is caused by... - CORRECT ANSWER -the weight of the column of
air molecules in the atmosphere above an object
pressure - CORRECT ANSWER -the force exerted on a given area
P=F/A
unit= Pascal
pascal (Pa) - CORRECT ANSWER -1 Pa = I N/m^2
atmosphere (atm) - CORRECT ANSWER -I atm = 101,325 Pa
kilopascal (kPa) - CORRECT ANSWER -1 kPa = 1000 Pa
pounds per square inch (psi) - CORRECT ANSWER -air pressure at sea level is 14.7 psi
bar (b) - CORRECT ANSWER -1 bar = 100,000 Pa
millibar (mb) - CORRECT ANSWER -1000 mb = 1 b
inches of mercury (in Hg) - CORRECT ANSWER -1 in Hg = 3386 Pa
torr - CORRECT ANSWER -760 torr = 1 atm
, millimeters of mercury (mmHg) - CORRECT ANSWER -1 mm Hg = 1 torr
barometer - CORRECT ANSWER -a glass tube that is closed at one end, filled with a non-
volatile liquid, inverted, and then immersed in a container of that liquid
- the atmosphere exerts pressure on the liquid outside the tube, the weight of the column of liquid
exerts pressure inside the tube and the pressure at the liquid surface is the same inside and
outside the tube
- height of liquid in tube is proportional to the pressure exerted by the atmosphere
Increased Temperature = - CORRECT ANSWER -Increased Pressure
Decreased Temperature = - CORRECT ANSWER -Decreased Pressure
Amonton's Law (P-T relationship for gases) - CORRECT ANSWER -The pressure of a
given amount of gas is directly proportional to its temperature on the kelvin scale when the
volume is held constant
P1/T1 = P2/T2
Increased Temperature = - CORRECT ANSWER -Increased volume
Decreased Temperature = - CORRECT ANSWER -Decreased volume
Charles Law - CORRECT ANSWER -the volume of a given amount of gas is directly
proportional to its temperature on the kelvin scale when the pressure is held constant
V1/T1 = V2/T2
