Question | Answer |
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 |