exam review Flashcards
properties of Ionic compounds
- high melting point
-hard and brittle - conducts electricity
-electrolytes - high solubility
properties of molecular compounds
- low melting point
soft - does not conduct electricity
-no electrolytes
low solubility
Dalton
featureless sphere
Rutherford
- protons in the nucleus
- electrons around nucleus
- NO Neutrons
Bohr
electrons are in a shell around the nucleus
-energy level module
Average atomic mass
AAM = M1(%) + M2(%)
isotope abundance
let X be % abundance as a decimal of isotope #1
let X+1 “ “ “ “ “ “ isotope 2
*use same formula as average atomic radius
heat capacity
q = mcT
calorimetry
Mhs = -(mcT)
^ ^
system surrounding
molecules/ non polar forces
LDF
polar forces
LDF , DDF, and it if it contains Hydrogen HB
bases
OH
- electrolytes
- blue litmus paper
saturated
contains the maximum quantity of the solute in at a given temp or pressure
Supersaturated
contains more than the maximum quantity of the solute at a given temp or pressure
unsaturated
a more solute can be dissolved at the given temp and pressure
PH acid
less than 7
PH base
greater than 7
PH formula
PH = -log [H(aq)]
H + formula
H = 10 ^PH
polar (electronegativity test)
< 0.5
non polar (electronegativity test)
> 0.5
Molecular
everything else
- no electrolytes
-
Ionic
metal and non metal
electrolytes
acid
contains and H
electrolytes
red litmus paper
