CHEM 103 FINAL EXAM QUESTIONS
AND COMPLETE ANSWERS
Lewis Structures - Answer: represents the transfer or the sharing of electrons in chemical bonds
octet rule - Answer: EVERY ATOM WANTS 8 ELECTRONS IN THEIR OUTERSHELL
ionic bonding - Answer: chemical bond formed through the transfer of one or more electrons from
one atom or group of atoms to another group
EX : NaBr
metals - Answer: give
nonmetals - Answer: take
oxidation number - Answer: the superscript indicating the charge on an ion
ion - Answer: atom with either positive or negative charge
binary compound - Answer: compounds in which 2 elements are present , metal and non metal -
nonmetal changes to ide
ionization energy - Answer: energy required to remove the most loosley held electron from outer
shell ; up and to the right
polyatomic molecule - Answer: nonmetals that form one ion
covalent bond - Answer: sharing of electrons
EX : CO2
,polyatomic ions - Answer: Ag silver ion
Fe 2+ ferrous ion
Fe 3+ ferric ion
Cu 1+ cuprous ion
Cu 2+ cupric ion
binary molecule - Answer: 1st word : prefix and full name
2nd word : prefix and stem and ide
mono - Answer: 1
di - Answer: 2
tri - Answer: 3
tetra - Answer: 4
penta - Answer: 5
hexa - Answer: 6
hepta - Answer: 7
octa - Answer: 8
ennea - Answer: 9
deca - Answer: 10
bonding electrons - Answer: pairs of valence electrons that are shared between pairs
, non bonding electrons - Answer: lone pairs that
are not involved in electron sharing
Linus Pauling - Answer: Nobel prize Chemist
electronegativity - Answer: measure of atoms attraction for electrons it shares with another atom in
a chemical bond
electronegativity increases - Answer: left to right
electronegativity decreases - Answer: top to bottom
repulsion - Answer: gives molecule shape, describes distance b/w bonding and non bonding pairs of
electrons
molecular geometry - Answer: 3 dimensional arrangement of atom within a molecule
VSEPR - Answer: valence shell electron pair repulsion theory - set of procedures for predicting a 3
dimensional geometry molecule
NH4 - Answer: ammonium with 1 superscript
OH 1 - Answer: hydroxide
NO2 - Answer: nitrite with -1 superscript
NO3 - Answer: nitrate with -1 superscript
C2H3O2 - Answer: acetate with -1 superscript
HCO3 - Answer: bicarbonate with -1 superscript
AND COMPLETE ANSWERS
Lewis Structures - Answer: represents the transfer or the sharing of electrons in chemical bonds
octet rule - Answer: EVERY ATOM WANTS 8 ELECTRONS IN THEIR OUTERSHELL
ionic bonding - Answer: chemical bond formed through the transfer of one or more electrons from
one atom or group of atoms to another group
EX : NaBr
metals - Answer: give
nonmetals - Answer: take
oxidation number - Answer: the superscript indicating the charge on an ion
ion - Answer: atom with either positive or negative charge
binary compound - Answer: compounds in which 2 elements are present , metal and non metal -
nonmetal changes to ide
ionization energy - Answer: energy required to remove the most loosley held electron from outer
shell ; up and to the right
polyatomic molecule - Answer: nonmetals that form one ion
covalent bond - Answer: sharing of electrons
EX : CO2
,polyatomic ions - Answer: Ag silver ion
Fe 2+ ferrous ion
Fe 3+ ferric ion
Cu 1+ cuprous ion
Cu 2+ cupric ion
binary molecule - Answer: 1st word : prefix and full name
2nd word : prefix and stem and ide
mono - Answer: 1
di - Answer: 2
tri - Answer: 3
tetra - Answer: 4
penta - Answer: 5
hexa - Answer: 6
hepta - Answer: 7
octa - Answer: 8
ennea - Answer: 9
deca - Answer: 10
bonding electrons - Answer: pairs of valence electrons that are shared between pairs
, non bonding electrons - Answer: lone pairs that
are not involved in electron sharing
Linus Pauling - Answer: Nobel prize Chemist
electronegativity - Answer: measure of atoms attraction for electrons it shares with another atom in
a chemical bond
electronegativity increases - Answer: left to right
electronegativity decreases - Answer: top to bottom
repulsion - Answer: gives molecule shape, describes distance b/w bonding and non bonding pairs of
electrons
molecular geometry - Answer: 3 dimensional arrangement of atom within a molecule
VSEPR - Answer: valence shell electron pair repulsion theory - set of procedures for predicting a 3
dimensional geometry molecule
NH4 - Answer: ammonium with 1 superscript
OH 1 - Answer: hydroxide
NO2 - Answer: nitrite with -1 superscript
NO3 - Answer: nitrate with -1 superscript
C2H3O2 - Answer: acetate with -1 superscript
HCO3 - Answer: bicarbonate with -1 superscript
