physical science 1111 self test
l. standard pressure
760 mm Hg
h. STP
760 mm Hg; 273 K
volume
As the ____________________________ of a gas decreases, its density increases.
k. gas laws
Boyle, Charles, Gay-Lussac
e. observable motion of tiny particles of matter being bumped by molecules
Brownian movement
c. discovered that air exerts pressure and has weight
Galileo and Torricelli
widely separated and moving rapidly
Gas molecules have little attraction for each other because they are __________________________________________________________.
elastic
In an _______________________________________ collision, no energy is lost upon impact.
d. absolute temperature
Kelvin scale
o. standard temperature
O C; 273 K
moving molecules
The kinetic theory of matter states that all matter consists of _______________________________________.
checkmark
at the same temperature, lighter molecules move faster than heavier ones.
n. caused by weight of atmosphere
atmospheric pressure
g. one factor increases as the other increases
direct relationship
no checkmark
doubling the size of gas molecules doesn't change the space between them.
f. a gas at normal temperatures and pressures
gas
no checkmark
gas molecules are greatly affected by the force of gravity.
checkmark
gas molecules are small compared with the space between them.
checkmark
gas molecules exert practically no attractive force upon one another.
checkmark
gas molecules frequently collide and change direction.
checkmark
gas molecules move faster at higher temperatures.
checkmark
gas molecules move rapidly and freely in all directions.
i. one factor increases as the other decreases
inverse relationship
a. curved lines on a weather map indicating areas of equal pressure
isobars
b. Hg
mercury
no checkmark
most gases in the natural state are molecules of two or more atoms.
j. caused by kinetic energy of molecules striking walls of container
pressure of a confined gas
checkmark
the collisions of gas molecules are elastic.
m. a gas when the temperatures and pressures are above normal
vapor
