CHEM 103 EXAMS 1 ALL QUESTIONS AND ANSWERS
SURE A+
✔✔electronegativity decreases - ✔✔top to bottom
✔✔repulsion - ✔✔gives molecule shape, describes distance b/w bonding and non
bonding pairs of electrons
✔✔molecular geometry - ✔✔3 dimensional arrangement of atom within a molecule
✔✔VSEPR - ✔✔valence shell electron pair repulsion theory - set of procedures for
predicting a 3 dimensional geometry molecule
✔✔NH4 - ✔✔ammonium with 1 superscript
✔✔OH 1 - ✔✔hydroxide
✔✔NO2 - ✔✔nitrite with -1 superscript
✔✔NO3 - ✔✔nitrate with -1 superscript
✔✔C2H3O2 - ✔✔acetate with -1 superscript
✔✔HCO3 - ✔✔bicarbonate with -1 superscript
✔✔CO3 - ✔✔carbonate with -2 superscript
✔✔SO3 - ✔✔sulfite with -2 superscript
✔✔SO4 - ✔✔sulfate with -2 superscript
,✔✔PO4 - ✔✔phosphate with -3 superscript
✔✔CN 1 - ✔✔cyanide
✔✔molar mass - ✔✔sum of all atomic masses in a compound
✔✔moles conversion - ✔✔division
( mass )
over
( atomic mass )
✔✔grams conversion - ✔✔multiplication
(moles) ( atomic mass )
✔✔write balanced equation - ✔✔step 1
✔✔write given - ✔✔step 2
✔✔write unknown - ✔✔step 3
✔✔find moles of given - ✔✔step 4
✔✔determine mole ratio - ✔✔step 5
✔✔convert moles to grams - ✔✔step 6
✔✔limiting reagent - ✔✔reagent that is used up first , calculate moles of each reagent ,
least amount is limiting
✔✔stoichiometry - ✔✔mass-mass relationship quantile study of chemical reaction
✔✔bond polarity - ✔✔measure of the degree of in equality in sharing of electrons
between 2 atoms in a chemical bond
✔✔non polar bond - ✔✔symmetrical distribution of electron charge
H2 N2
✔✔polar bond - ✔✔a bond in which there is an unsymmetrical distribution of electron
charge
HCl and CO
✔✔compressibility - ✔✔measure of change in a volume due to a change in pressure
, ✔✔thermal expansion - ✔✔measure of change in a volume due to a change in
temperature
✔✔kinetic energy - ✔✔energy that matter possesses because of the particle motion
- ENERGY IN MOTION
✔✔potential energy - ✔✔stored energy that matter possesses as a result of its position,
condition and / or composition
- ENERGY AT REST
✔✔electrostatic interaction - ✔✔an attraction or repulsion that occurs between charged
particles
✔✔kinetic molecular theory of matter - ✔✔explains physical behavior of the three states
of matter
✔✔what are the 5 parts of the kinetic molecular theory of matter? - ✔✔1. matter is
composed of tiny particles
2. particles possess potential energy
3. particles possess kinetic energy
4. velocity of the particles increase as the temperature is increased
5. particles transfer energy through collisions
✔✔solid - ✔✔definite volume and definite shape
high density
small compressibility
✔✔liquid - ✔✔definite volume and indefinite shape
high density
small compressibility
✔✔gas - ✔✔indefinite volume and indefinite shape
low density
large compressibilty
✔✔barometer - ✔✔device that measures atm pressure
✔✔760 mmHg equals .... - ✔✔1.00 atm
✔✔1.00 atm equals ...... - ✔✔1 torr
✔✔14.7 psi - ✔✔1.00 atm equals ....
SURE A+
✔✔electronegativity decreases - ✔✔top to bottom
✔✔repulsion - ✔✔gives molecule shape, describes distance b/w bonding and non
bonding pairs of electrons
✔✔molecular geometry - ✔✔3 dimensional arrangement of atom within a molecule
✔✔VSEPR - ✔✔valence shell electron pair repulsion theory - set of procedures for
predicting a 3 dimensional geometry molecule
✔✔NH4 - ✔✔ammonium with 1 superscript
✔✔OH 1 - ✔✔hydroxide
✔✔NO2 - ✔✔nitrite with -1 superscript
✔✔NO3 - ✔✔nitrate with -1 superscript
✔✔C2H3O2 - ✔✔acetate with -1 superscript
✔✔HCO3 - ✔✔bicarbonate with -1 superscript
✔✔CO3 - ✔✔carbonate with -2 superscript
✔✔SO3 - ✔✔sulfite with -2 superscript
✔✔SO4 - ✔✔sulfate with -2 superscript
,✔✔PO4 - ✔✔phosphate with -3 superscript
✔✔CN 1 - ✔✔cyanide
✔✔molar mass - ✔✔sum of all atomic masses in a compound
✔✔moles conversion - ✔✔division
( mass )
over
( atomic mass )
✔✔grams conversion - ✔✔multiplication
(moles) ( atomic mass )
✔✔write balanced equation - ✔✔step 1
✔✔write given - ✔✔step 2
✔✔write unknown - ✔✔step 3
✔✔find moles of given - ✔✔step 4
✔✔determine mole ratio - ✔✔step 5
✔✔convert moles to grams - ✔✔step 6
✔✔limiting reagent - ✔✔reagent that is used up first , calculate moles of each reagent ,
least amount is limiting
✔✔stoichiometry - ✔✔mass-mass relationship quantile study of chemical reaction
✔✔bond polarity - ✔✔measure of the degree of in equality in sharing of electrons
between 2 atoms in a chemical bond
✔✔non polar bond - ✔✔symmetrical distribution of electron charge
H2 N2
✔✔polar bond - ✔✔a bond in which there is an unsymmetrical distribution of electron
charge
HCl and CO
✔✔compressibility - ✔✔measure of change in a volume due to a change in pressure
, ✔✔thermal expansion - ✔✔measure of change in a volume due to a change in
temperature
✔✔kinetic energy - ✔✔energy that matter possesses because of the particle motion
- ENERGY IN MOTION
✔✔potential energy - ✔✔stored energy that matter possesses as a result of its position,
condition and / or composition
- ENERGY AT REST
✔✔electrostatic interaction - ✔✔an attraction or repulsion that occurs between charged
particles
✔✔kinetic molecular theory of matter - ✔✔explains physical behavior of the three states
of matter
✔✔what are the 5 parts of the kinetic molecular theory of matter? - ✔✔1. matter is
composed of tiny particles
2. particles possess potential energy
3. particles possess kinetic energy
4. velocity of the particles increase as the temperature is increased
5. particles transfer energy through collisions
✔✔solid - ✔✔definite volume and definite shape
high density
small compressibility
✔✔liquid - ✔✔definite volume and indefinite shape
high density
small compressibility
✔✔gas - ✔✔indefinite volume and indefinite shape
low density
large compressibilty
✔✔barometer - ✔✔device that measures atm pressure
✔✔760 mmHg equals .... - ✔✔1.00 atm
✔✔1.00 atm equals ...... - ✔✔1 torr
✔✔14.7 psi - ✔✔1.00 atm equals ....
