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49 Cards in this Set

  • Front
  • Back
properties of gas
variable shape
expand uniformly
compress uniformly
mix uniformly with other gases
density of air
1 g / 1L (0.001 g/mL)
gas pressure
result of molecules constantly moving
inventor of barometer
Torrcelli
sea level
29.9 inches (1 atm)
units of gas
atmosphere- 1 atm exactly
in. of mercury- 29.9 in Hg exactly
cent. of mercury- 760 cm Hg exactly
mm. of mercury- 760 mm Hg exactly
torr- 760 torr exactly
pounds per sq. in.- 14.7 psi
kilopascal- 101 kPsa
increase of volume

decrease of volume
decrease of pressure

increase of pressure
increase of molecules

decrease of molecules
pressure increase

pressure decrease
V is equal to
P is equal to
R is equal to
Volume
Pressure
0.0821
charles law
directly proportional to Kelvins volume and temperature increase
Lussacs law
pressure proportional to temperature
absolute zero
where pressure and temperature meet at absolute zero
vapor pressure
pressure exerted by vapor when rates of condensation and
increase of temperature

decrease of temperature
increase in pressure

decrease in pressure
final pressure if volume changes
V1P1=V2P2
final volume with temperature change
V1T1=V2T2
final temperature
P1T2=P2T2
combined gas law
V1P1=V2P2
_____ _____
T1 T2
partial pressure
P1+ P2+ P3= P total
core electrons
not involved in bonding
valence electrons
involved in bonding
cations

anions
loses electrons

gain electrons
isoelectronic with
noble gas
ionic radii
positive ions smaller than original atoms
negative ion larger
energy is released
when a bond is formed
covalent two nonmetals share electrons
bond belong to both atoms
bond length
distance between two atoms and is smaller than radii ( less than sum of atomic radii)
electronegativity
ability of an atom to attract electrons
increases left to right across and bottom to top
Flourine

Cesium
most electronegative

lowest electronegative
diatomic elements
nonpolar; H2 N2 O2 F2 Cl2 Br2 I2
nonpolar
less than.5-.9
polar covalent
greater than .9-2
electrons not shared equally
ionic
greater than 2
coordinate covalent bonds
one dominating atom an electron pair to another atom
properties of liquids
variable shape, fixed volume
flow readily, does not compress or expand
high density and soluable mix homogeneously
intermolecular bond


intramolecular bond
weak attractions between molecules

between atoms an molecules
hydrogen bond
present when molecule has an N, F, or O bonded to an H
dipole force
permanent attraction
dispersion force
temporary dipole (wave)
hydrate
crystalline ionic compound containing water
boiling point
100 C 760 mm Hg(vapor pressure)
viscosity
resistance of liquid to flow
surface tension
attraction between surface molecules in a liquid
properties of a solid
fixed shape and volume
crystalline and noncrystalline
dont compress/expand
dont mix by diffusion
higher density than liquids
heat is
necessary to change physical change of a substance
melting/ vaporization/ fusion
ice values
specific heat 0.50
fusion 80.0
water values
specific heat 1.00
solid 80.0
vapor 540
steam values
specific heat 0.48
condensation 540
KE=1/2 mv ^2
lower molar mass greater speed
higher molar mass lower speed