Unit 3.5 Flashcards
kinetic energy formula
KE=1/2mv^2
ideal gas laws (1-3)
-gas particles are in constant random rapid motion
-gases expand to fill their container completely
-two or more gases will form a homogeneous mixture when combined
ideal gas laws (4-7)
-gases are highly compressible
-the volume of the gas particles themselves is negligible compared to the volume occupied by the gas
-collisions of gas particles are perfectly elastic, meaning the energy is transferred but not lost during collisions
-there are no attractive or repulsive forces
x and y axis of maxwell-boltzmann distribution curve is
x- particle speed
y- # of particles
the peak in a maxwell-boltzmann distribution curve is
the most probable speed
higher, skinnier curve=
heavier particles slower avg speed
lower, fatter curve=
lighter particles, faster avg speed, moves more to the right
2 elements that have the same temp, do they have the same kinetic energy?
yes
when particles have attractive forces will they collide with smaller or stronger force of impact?
smaller
is the pressure of real gas less or greater than the value predicted by the ideal gas law
less
bc of less colliding forces bc of attractive forces
more collisions= ____ pressure
higher
a gas should exhibit ideal behavior at relatively _____ temperatures and ____pressures
high temperatures and low pressures
the greater the mass of an element the ____ the speed
slower
2 molecules, 1 polar and 1 nonpolar, which one will have relatively low temperatures
the polar one
periodic table:
He
Xe
which one will have relatively higher pressure
Xe bc larger atomic radius so bc its bigger there will be less space in the container so more collisions, higher pressure
what is an aqueous solution
a substance that was dissolve completely in water
when a aqueous solution is formed what will the change in strength be
stronger to weaker
(never reverse ever)
frequency from red->purple
wavelengths
lowest->highest
highest->lowest
electromagnetic spectrum from biggest wavelength to smallest
radio
microwave
infared
visable
ultraviolet
xray
gamma
2 light formulas
C=yv
E=hc/y or y=hc/E or E=hv
C
3.010^8m or
3.010^17nm
h
6.63*10^-34 J
convert kJ to J
multiply by 1000
“how many photons”
T/E
Photons given
E=T/photons
microwave effect and relative energy
rotate and low energy
infrared effect and relative energy
stretch and vibrate, medium energy
visible and ultraviolet effect and relative energy
electrons move up to higher energy level, high energy
convert J to KJ
divide by 1000
Al: vapor pressure:10 temp:1780
Ag: vapor pressure:10 temp:1540
which one has a stronger attractive force
Al bc Al requires more heat to overcome its molecular forces so it needs more energy
