CHEM 2261 - Nauman Exam 1 And
Exam 2 Test Questions with
Guaranteed Pass Solutions 2025-2026
Updated.
atomic number - Answer the number of protons in the nucleus of an element
isotopes - Answer two or more atoms of the same element having the same number of
protons in the nucleus but a different number of neutrons
have the same atomic number but different mass numbers
mass number - Answer total number of protons and neutrons in the nucleus
atomic weight - Answer the weighted average of the mass of all isotopes of a particular
element (amu)
heteroatom - Answer any atom other than carbon or hydrogen in an organic molecule
orbitals - Answer a region of space around the nucleus of an atom that is high in electron
density
s orbital - Answer sphere shaped, lowest in energy because electrons are closer to the
positively charged nucleus
holds 2 electrons maximum
p orbital - Answer dumbbell shaped, contains a node at the nucleus, higher in energy that s
orbital
3 orientations (px, py, and pz)
holds a max of 2 electrons each for a total of 6
valence electrons - Answer the electrons in the outermost shell of orbitals
determine the properties of a given element
Loosely held and participate in chemical reactions
bonding - Answer the joining of two atoms in a stable arrangement
atoms attain a complete outer shell of valence electrons
, atoms gain, lose, or share electrons to attain the electron configuration of the noble gas closest
to them in the periodic table
compounds - Answer the structure that results when two or more elements are joined
together in a stable arrangement
ionic bond - Answer a bond that results from the transfer of electrons from one element to
another
result from strong electrostatic interactions between ions with opposite charges
the transfer of electrons forms stable salts composed of cations and anions
covalent bond - Answer a bond that results from the sharing of electrons between two
nuclei
a two electron bond
occurs with elements like carbon in the middle of the periodic table
molecule - Answer a compound containing two or more atoms bonded together with
covalent bonds
isomer - Answer two different compounds that have the same molecular formula
constitutional/structural isomers - Answer two compounds that have the same molecular
formula, but differ in the way the atoms are connected to each other
skeletal isomers - Answer isomers that differ in the arrangement of the carbon chain
positional isomers - Answer constitutional isomers where a non-carbon/hydrogen atom
moves or a multiple bond moves (functional group stays the same)
functional isomer - Answer constitutional isomers where the functional group differs
because of the arrangement of non-carbon/hydrogen atoms with carbon and hydrogen
stereoisomerism - Answer isomer class with same connectivity among atoms but these
atoms differ in spatial orientation (geometric, conformational, and optical)
resonance structures - Answer two or more structures of a molecule that differ in the
placement of pi bonds and nonbonded electrons
Exam 2 Test Questions with
Guaranteed Pass Solutions 2025-2026
Updated.
atomic number - Answer the number of protons in the nucleus of an element
isotopes - Answer two or more atoms of the same element having the same number of
protons in the nucleus but a different number of neutrons
have the same atomic number but different mass numbers
mass number - Answer total number of protons and neutrons in the nucleus
atomic weight - Answer the weighted average of the mass of all isotopes of a particular
element (amu)
heteroatom - Answer any atom other than carbon or hydrogen in an organic molecule
orbitals - Answer a region of space around the nucleus of an atom that is high in electron
density
s orbital - Answer sphere shaped, lowest in energy because electrons are closer to the
positively charged nucleus
holds 2 electrons maximum
p orbital - Answer dumbbell shaped, contains a node at the nucleus, higher in energy that s
orbital
3 orientations (px, py, and pz)
holds a max of 2 electrons each for a total of 6
valence electrons - Answer the electrons in the outermost shell of orbitals
determine the properties of a given element
Loosely held and participate in chemical reactions
bonding - Answer the joining of two atoms in a stable arrangement
atoms attain a complete outer shell of valence electrons
, atoms gain, lose, or share electrons to attain the electron configuration of the noble gas closest
to them in the periodic table
compounds - Answer the structure that results when two or more elements are joined
together in a stable arrangement
ionic bond - Answer a bond that results from the transfer of electrons from one element to
another
result from strong electrostatic interactions between ions with opposite charges
the transfer of electrons forms stable salts composed of cations and anions
covalent bond - Answer a bond that results from the sharing of electrons between two
nuclei
a two electron bond
occurs with elements like carbon in the middle of the periodic table
molecule - Answer a compound containing two or more atoms bonded together with
covalent bonds
isomer - Answer two different compounds that have the same molecular formula
constitutional/structural isomers - Answer two compounds that have the same molecular
formula, but differ in the way the atoms are connected to each other
skeletal isomers - Answer isomers that differ in the arrangement of the carbon chain
positional isomers - Answer constitutional isomers where a non-carbon/hydrogen atom
moves or a multiple bond moves (functional group stays the same)
functional isomer - Answer constitutional isomers where the functional group differs
because of the arrangement of non-carbon/hydrogen atoms with carbon and hydrogen
stereoisomerism - Answer isomer class with same connectivity among atoms but these
atoms differ in spatial orientation (geometric, conformational, and optical)
resonance structures - Answer two or more structures of a molecule that differ in the
placement of pi bonds and nonbonded electrons
