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Chem Midterm

formula for finding energy E=hv
h= ??? 6.63x10^-34 J/s
Formula for finding wavelength C=v/\
C= ??? 3.00x10^8 m/s
covalent bond sharing of electrons between a nonmetal and a nonmetal
ionic bond gain and loss of electrons between a metal and a nonmetal
metallic strong bond between a metal and a metal
group 1= Alkali metals
group 2= alkaline earth metals
group 17= halogens
group 18= noble gases
periodic trends for atomic radius <---- increasing and down
periodic trends for ie, en, and ea ^ and ----> increasing
time si base unit second
length si base unit meter
mass si base unit kilogram
temperature si base unit kelvin
amount of a substance si base unit mole
giga (G) 1x10^9 m
mega (M) 1x10^6 m
kilo (k) 1x10^3 m
centi (c) 1x10^-2 m
mili (m) 1x10^-3 m
micro (ua) 1x10^-6 m
nano (n) 1x10^-9 m
accuracy how close a measurement is to some accepted or true value % error
precision reliability, repeatability, consistency of a measurement + or - uncertainty and significant digits
element simplest kind of mtter, all one kind of atom, can't be broken down
compound substances that can be broken down chemically
mixture physical blend of @least two substances
solid definite volume and shape; particles packed in fixed positions
liquid definite volume, indefinite shape; particles close together
gas indefinite volume and shape; particles @ great distances from one another in constant random motion
plasma high temperature, ionized phase of matter as found on the sun
phase changes that require energy melting, evaporation, sublimation
phase changesthat release energy condensation, freezing
Dalton Atomic theory
Thomson plum pudding model
Rutherford Gold Foil Experiment, nucleus, nuclear model
Bohr planetary model
schrodinger mathematical; quantum mechanical model
chadwick neutron
fission splitting a nucleus into 2+ smaller nuclei; nuclear energy and weapons
fusion combining of two nuclei to form one nucleus oflarger mass; H-bomb, sun
principal qn n- denotes energy level in which the electron is located; indicates distance from nucleus- n increases, distance increases
angular momentum qn l- sublevel
magenetic qn ml- orientation of electron's orbital; between -1 and 1; max # orbitals for each energy level is n^2
spin qn ms- direction of spin of an electron within a magnetic field; each orbital can contain 2 electrons; 1 cw 1 ccw
Created by: AlanaR



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