Chem 102 Exam 1 Memorization

length

m

mass

Kg

time

s

temperature

K

electric current

ampere (A)

amount of substance

mol

lumnious intensity

candela (cd)

femto

f: 10e-15

pico

p: 10e-12

nano

n:10e-9

micro

10e-6 (mu thing)

milli

m: 10e-3

centi

c: 10e-2

deci

d: 10e-1

kilo

k; 10e3

mega

M: 10e6

giga

G: 10e9

tera

T: 10e12

peta

P: 10e15

exa

E: 10e18

Cathode Radiation Tube (CRT)

Thompson, found the electron and mass of electron

oil drop

millikan, exact charge of electron

gold foil

rutherford, nucleus and proton

radiation

chadwick, curies, and becquerel, neutron existence

low to high wavelength but high to low frequency

gamma, xray, uv, purple to red, infrared, terahert, microwave, radio

Hunds rule

school bus rule, each electron goes into each orbital first

Afbaus rule

need to go in order of energy levels 1s→2s→2p

Paulis rule

can’t have two upward arrows next to each other

ionization energy

energy to remove, up and to right

atomic radii

down and to left, for cation is smaller than parent, for anion is larger than parent

delta EN for pure covalent

<0.4

delta EN for polar covalent

0.4-1.8

delta EN for ionic

>1.8

covalent

share electrons

ionic

metal and nonmetal, + and -