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EXAM
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45
Chemistry
11th Grade
05/29/2012
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Term
means without water
 Definition
anhydrous
Term
crystals lose water of hydration to the atmosphere undergo
 Definition
efflorcentces
Term
substances that attract water from the air, AND completly dissolve (a puddle forms)
 Definition
deliquesecnt
Term
________ crystals have molecules in their stucture eventhough the crystals appear to be dry
 Definition
hydrated
Term
___________ means random arrangment
 Definition
amorphous
Term
crystals that attract water look wet, stick together are said to be...
 Definition
hygroscopic
Term
an ______ occurs when 2 opposing changes occur @ the same time
 Definition
dynamic equilibrum
Term
when the gaseous phase can hold no more vapor it is said to be ______
 Definition
saturated
Term
when substances (that are normally liquids or solids @ room temp) form the gasous state this gaseous state
 Definition
vapor
Term
TRUE/FALSE the melt point and freez are @ same temp
 Definition
true
Term
he temp @ which the vapor pressure of a liquid = the atmospheric
 Definition
boiling point
Term
pressure of liquid = 101.325
 Definition
normal boiling point
Term
volatile liquid have _________ attraction between their molecules
 Definition
weak
Term
sub with low melting points have ______ attraction between their molecules
 Definition
weak
Term
If stress is applied to a system @ equilibrium, the system will tend to readjust so that the stress is reduced
 Definition
LeChatelier
Term
the temp where the vapor pressure of the solid =the vapor pressure of the liquid is the ________ point
 Definition
melting
Term
sub with strong forces between molecules have _______ vapor pressure
 Definition
low
Term
as the atmospheric pressure increases, the boiling point )______________
 Definition
increases
Term
name a common substance that undergoes sublimation
 Definition
dry ice
Term
particles independent of each other
 Definition
gas
Term
mean free path
 Definition
particle travels between collision
Term
perfectly elastic
 Definition
collison between particles in which NO energy is lost
Term
what gas is almost "ideal"
 Definition
helium
Term
@ constant temp as the vol decreases, the pressure _________
 Definition
increases
Term
@ a constant pressuree as Kelvin temp increases, the vol _____________
 Definition
increases
Term
gases fail to be ideal at
 Definition
high pressure and low temp
Term
the temp @ which the vapor pressure of a liquid = the atmospheric
 Definition
101.325 kPa
Term
the value of standard temp
 Definition
273 K
Term
an ______ gas is a gas that obeys all gas laws perfectly under all conditions
 Definition
ideal
Term
________ law states the amoust and vol of a gas remains constant, the pressure varies ______ with the _______ temp.
 Definition
Guy-Lussac's
directly
Kelvin
Term
Charles law, Guy and boyle make
 Definition
combined gas laws
Term
____law states if the amount and temp of gas remains constant, the a volume varies ________ as the _______
 Definition
Boyles
inversly
pressure
Term
if pressure decreases, and volume decreases kelvin temp?
 Definition
decreases
Term
if pressure doubles, Kelvin temp triples volume
 Definition
increse
Term
two ways to speed up rate solid dissolves in a liquid
 Definition
crush, heat
Term
non polar solvent
 Definition
painthinner
Term
gas solute in liquid solvent
 Definition
sodapop
Term
solute
 Definition
being dissolved
Term
an alloy of mercury and some other metal is called
 Definition
amalgam
Term
__________ law states explains the effect pressure has on the solubility of a gas in a liquid
 Definition
Henry's
Term
_________ gas will dissolve in a liquid if the pressure above the liquid is decreased
 Definition
less
Term
_______ gas will dissolve in warm h2o than cold h20
 Definition
less
Term
to dissolve more sugar in water increase _______
 Definition
temp.
Term
tree sap is more likely soluble in water or rubbing alcohol?
 Definition
rubbing alcohol
Term
as the temp ^ a solid becomes ______ soluble in liquid
 Definition
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