CHEM 103 MODULE 2 EXAM ATOMIC
STRUCTURE AND CHEMICAL BONDING
BREAKDOWN 2026
◉ 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
◉ CO3. Answer: carbonate with -2 superscript
◉ SO3. Answer: sulfite with -2 superscript
◉ SO4. Answer: sulfate with -2 superscript
◉ PO4. Answer: phosphate with -3 superscript
◉ CN 1. Answer: cyanide
,◉ molar mass. Answer: sum of all atomic masses in a compound
◉ moles conversion. Answer: division
( mass )
over
( atomic mass )
◉ grams conversion. Answer: multiplication
(moles) ( atomic mass )
◉ write balanced equation. Answer: step 1
◉ write given. Answer: step 2
◉ write unknown. Answer: step 3
◉ find moles of given. Answer: step 4
◉ determine mole ratio. Answer: step 5
◉ convert moles to grams. Answer: step 6
, ◉ limiting reagent. Answer: reagent that is used up first , calculate
moles of each reagent , least amount is limiting
◉ stoichiometry. Answer: mass-mass relationship quantile study of
chemical reaction
◉ bond polarity. Answer: measure of the degree of in equality in
sharing of electrons between 2 atoms in a chemical bond
◉ non polar bond. Answer: symmetrical distribution of electron
charge
H2 N2
◉ polar bond. Answer: a bond in which there is an unsymmetrical
distribution of electron charge
HCl and CO
◉ compressibility. Answer: measure of change in a volume due to a
change in pressure
◉ thermal expansion. Answer: measure of change in a volume due to
a change in temperature
STRUCTURE AND CHEMICAL BONDING
BREAKDOWN 2026
◉ 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
◉ CO3. Answer: carbonate with -2 superscript
◉ SO3. Answer: sulfite with -2 superscript
◉ SO4. Answer: sulfate with -2 superscript
◉ PO4. Answer: phosphate with -3 superscript
◉ CN 1. Answer: cyanide
,◉ molar mass. Answer: sum of all atomic masses in a compound
◉ moles conversion. Answer: division
( mass )
over
( atomic mass )
◉ grams conversion. Answer: multiplication
(moles) ( atomic mass )
◉ write balanced equation. Answer: step 1
◉ write given. Answer: step 2
◉ write unknown. Answer: step 3
◉ find moles of given. Answer: step 4
◉ determine mole ratio. Answer: step 5
◉ convert moles to grams. Answer: step 6
, ◉ limiting reagent. Answer: reagent that is used up first , calculate
moles of each reagent , least amount is limiting
◉ stoichiometry. Answer: mass-mass relationship quantile study of
chemical reaction
◉ bond polarity. Answer: measure of the degree of in equality in
sharing of electrons between 2 atoms in a chemical bond
◉ non polar bond. Answer: symmetrical distribution of electron
charge
H2 N2
◉ polar bond. Answer: a bond in which there is an unsymmetrical
distribution of electron charge
HCl and CO
◉ compressibility. Answer: measure of change in a volume due to a
change in pressure
◉ thermal expansion. Answer: measure of change in a volume due to
a change in temperature
