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34 Cards in this Set

  • Front
  • Back
the general formula used to solve factor-label conversions
q+y=q+y sought
Given # x # + label you need / conversion factor
the amount of space occupied by an object is called...
the _______ of a substance relates the mass of the substance to its volume
40.0 cm3 sample of quartz has a density of 2.65 g/cm3. What is the mass of the quartz sample?
2.65g/cm3 x xg/ 40cm3
2.65 x 40 cm3= mass is 106g
d is
d= m/v
mass is
m= d x v
volume is
d is measured in...
significant number rules for adding, sub, mult, and dividing
+-= least number after the decimal
x / = least total sig figs
derived unit
isotopes of an element contain diff numbers of
protium... of hydrogen
0 neutrons.... most common
rutherford concluded....
in atom most of the mass is in the nucleus
mass of neutron
about same as proton
a helium isotope consists of 2 protons, 2 electrons, and 2 neutrons... it's mass # is
what scientific discovery caused dalton's atomic theory to be altered?
the discovery of isotopes, and the invention of the cathode ray tube
oxygen can combine with carbon to form 2 compounds is an example of
law of multiple proportions
avagadro's theory
6.02 x 10'23
atomic mass
total # of protons plus neutrons in an atom
how you determine the identity of an atom
atomic mass
mass number
number of neutrons
finding average %
multiply atomic mass and percent of each element then add them together
speed of light
3 x 10'8
distance b/t same pt of adjacent waves
individual quantum of light
separates light into a spectrum
measured in hertz v
photoelectric effect
emission of electrons by metals with light on them
lyman series
ultraviolent wavelength in hydrogen spectrum
lowest energy state of an atom
balmer series
visible wavelength in hydrogen spectrum
angular momentum quantum number
tells shape of the orbital
d orbitals
number of orbitals in a main energy leven n=1
spin quantum number
indicates spin states of an electron