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### 34 Cards in this Set

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 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... volume the _______ of a substance relates the mass of the substance to its volume density 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 v=m/d d is measured in... g/cm3 significant number rules for adding, sub, mult, and dividing +-= least number after the decimal x / = least total sig figs derived unit kilo....deci... isotopes of an element contain diff numbers of neutrons 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 4 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 wavelength distance b/t same pt of adjacent waves photon individual quantum of light spectroscope separates light into a spectrum frequency measured in hertz v photoelectric effect emission of electrons by metals with light on them lyman series ultraviolent wavelength in hydrogen spectrum grount 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