CEM 141 MSU FINAL EXAM BANK 2026
EXAM QUESTIONS ACCURATE ACTUAL
EXAM / FREQUENTLY TESTED QUESTIONS
WITH DETAILED ANSWERS |
GUARANTEED PASS | GRADED A | LATEST
UPDATE
What happens to ionization energy across the Periodic
Table? - ....ANSWER...Increases across the periodic table
because the electrons are more strongly attracted to the
nucleus.
Why do two hydrogen atoms interact through covalent
bonds and He does not? - ....ANSWER...Hydrogen has
more electrons in the bonding orbitals than the anti-
bonding orbitals, whereas Helium has the same number in
both.
Does F2 or Br2 have the higher boiling point? -
....ANSWER...Br2 because it has stronger LDFs than F2
and therefore takes more energy to overcome the LDFs
when Br2 boils.
,Why don't metals shine in the dark? -
....ANSWER...Metals shine because they absorb and re-
emit photons. There are no photons to absorb in the dark.
Why does graphite conduct electricity while diamond does
not? - ....ANSWER...Some of the valence electrons in
graphite, but not in diamond, are delocalized in the pi
molecular orbitals that extend across the entire network, so
electrons can move freely in these orbitals.
According to the Valence Bond Theory, what types of
orbitals does carbon use for bonding in diamond? -
....ANSWER...The sp3 hybridized orbitals that form upon
mixing s and p orbitals.
What types of geometries can cancel out to become
nonpolar? - ....ANSWER...Linear and trigonal planar
because they are all the same distance away from one
another and if they are all pulled away, the inner atom
stays in place and is nonpolar.
The molecule CH2Cl2 is.. - ....ANSWER...always polar!
,Which is likely to have the highest melting point?
MgF2
MgBr2
NaBr - ....ANSWER...MgF2 because the magnitude of the
charges on the ions is the greatest and the radii of the ions
is the smallest.
What is the hybridization of the sulfur in SO3? -
....ANSWER...sp2.
What is the formal charge on the sulfur in SO3? -
....ANSWER...+2.
What is the formula for the compound formed between
aluminum and chlorine? - ....ANSWER...Al+3Cl-1
Which one would have the highest melting point?
Substances with purely LDFs or substances with hydrogen
bonding? - ....ANSWER...Substances with hydrogen
bonding because those IMFs are harder to break.
, Would Ar, CH4, or N2 be moving fastest on average? -
....ANSWER...Ar because it is the lightest mass of the
three.
In a system composed of two different molecules, one light
and one heavy. At the same temperature, which molecule
has a lower kinetic energy?
T=KE - ....ANSWER...Both are the same.
On a humid day, water in the air condenses on the outside
of a cold cup. The condensation of the water is.. -
....ANSWER...Exothermic and thermal energy is
transferred from the system to the surroundings.
From a gas to a liquid, energy is being released as IMFs are
being created.
When sweat evaporates from your skin you feel cooler.
What process is responsible for this? -
....ANSWER...Energy transfers from your skin to the
water and the energy makes the molecules vibrate more
strongly, and intermolecular forces between the water
molecules are overcome and the water evaporates.
EXAM QUESTIONS ACCURATE ACTUAL
EXAM / FREQUENTLY TESTED QUESTIONS
WITH DETAILED ANSWERS |
GUARANTEED PASS | GRADED A | LATEST
UPDATE
What happens to ionization energy across the Periodic
Table? - ....ANSWER...Increases across the periodic table
because the electrons are more strongly attracted to the
nucleus.
Why do two hydrogen atoms interact through covalent
bonds and He does not? - ....ANSWER...Hydrogen has
more electrons in the bonding orbitals than the anti-
bonding orbitals, whereas Helium has the same number in
both.
Does F2 or Br2 have the higher boiling point? -
....ANSWER...Br2 because it has stronger LDFs than F2
and therefore takes more energy to overcome the LDFs
when Br2 boils.
,Why don't metals shine in the dark? -
....ANSWER...Metals shine because they absorb and re-
emit photons. There are no photons to absorb in the dark.
Why does graphite conduct electricity while diamond does
not? - ....ANSWER...Some of the valence electrons in
graphite, but not in diamond, are delocalized in the pi
molecular orbitals that extend across the entire network, so
electrons can move freely in these orbitals.
According to the Valence Bond Theory, what types of
orbitals does carbon use for bonding in diamond? -
....ANSWER...The sp3 hybridized orbitals that form upon
mixing s and p orbitals.
What types of geometries can cancel out to become
nonpolar? - ....ANSWER...Linear and trigonal planar
because they are all the same distance away from one
another and if they are all pulled away, the inner atom
stays in place and is nonpolar.
The molecule CH2Cl2 is.. - ....ANSWER...always polar!
,Which is likely to have the highest melting point?
MgF2
MgBr2
NaBr - ....ANSWER...MgF2 because the magnitude of the
charges on the ions is the greatest and the radii of the ions
is the smallest.
What is the hybridization of the sulfur in SO3? -
....ANSWER...sp2.
What is the formal charge on the sulfur in SO3? -
....ANSWER...+2.
What is the formula for the compound formed between
aluminum and chlorine? - ....ANSWER...Al+3Cl-1
Which one would have the highest melting point?
Substances with purely LDFs or substances with hydrogen
bonding? - ....ANSWER...Substances with hydrogen
bonding because those IMFs are harder to break.
, Would Ar, CH4, or N2 be moving fastest on average? -
....ANSWER...Ar because it is the lightest mass of the
three.
In a system composed of two different molecules, one light
and one heavy. At the same temperature, which molecule
has a lower kinetic energy?
T=KE - ....ANSWER...Both are the same.
On a humid day, water in the air condenses on the outside
of a cold cup. The condensation of the water is.. -
....ANSWER...Exothermic and thermal energy is
transferred from the system to the surroundings.
From a gas to a liquid, energy is being released as IMFs are
being created.
When sweat evaporates from your skin you feel cooler.
What process is responsible for this? -
....ANSWER...Energy transfers from your skin to the
water and the energy makes the molecules vibrate more
strongly, and intermolecular forces between the water
molecules are overcome and the water evaporates.
