Chemistry 1010 Exam #2 Questions
with Correct Answers 2026 Updated.
Molecule - Answer A unit of matter that results when 2 or more atoms are joined by
covalent bonds (share electrons).
Ionic Bond - Answer A bond resulting from a complete transfer of one of more electrons
from one atom to another, resulting in the formation of 2 charged particles (ions). The
electrostatic attraction of a cation (loses electrons, + charge, roman numerals) for an anion
(gains electron, - charge).
Nonpolar Covalent Bond - Answer Simple Answer: 2 atoms evenly share 2 electrons.
Complex: A bond characterized by an even distribution of charge; electrons in the bonds are
shared equally by the two atoms.
Polyatomic ions - Answer A charged group of more than one kind of atom joined together by
covalent bond.
Electrostatic Potential - Answer The energy a charged particle has due to its position relative
to another charged particle.
Lattice Energy - Answer The energy released when 1 mole of an ionic compound forms from
its free ions in the gas phase.
Bond Energy - Answer The energy needed to break 1 mole of a particular covalent bond in a
molecule OR polyatomic ion in the gas phase.
Octet Rule - Answer States that atoms of main group elements make bonds by gaining,
losing, or sharing electrons to achieve a valence shell containing 8 electrons, or four electron
pairs.
Bond Length - Answer The distance between the nuclear centers of two atoms joined
together in a bond.
Bonding Pair - Answer A pair of electrons shared between two atoms.
Lone Pair - Answer A pair of electrons that is not shared between two atoms, it is only on
one atom.
, Electronegativity - Answer A relative measurement of the ability of an atom in a bond to
attract electrons to itself when bonded to another atom.
Resonance - Answer A characteristic of electron distributions when two or more equivalent
Lewis structures can be drawn for one compound.
Resonance Structures - Answer One of two or more Lewis structures with the same
arrangement of atoms but different arrangements of bonding pairs of electrons.
Resonance Stabilization - Answer The stability of a molecular structure due to the
delocalization of its electrons.
Formal Charge - Answer A value calculated for an atom in a molecule or polyatomic ion. (# of
valence electrons - (sum of lone pair electrons + number of bonds)).
Bond Order - Answer The number of bonds between atoms. Values are 1 for a single bond, 2
for double, and 3 for triple.
Polar Covalent Bond - Answer Simple Answer: 2 atoms share 2 electrons unevenly (unequal
sharing) and the electrons are more attracted to the more electronegative atom.
Complex:A bond resulting from unequal sharing of bonding pairs of electrons between two
atoms.
Down - Answer As electrostatic potential goes up the distance between particles goes
_______.
Up - Answer As electrostatic potential goes up the product of the charges of the particles
goes _______.
Shorter and stronger - Answer A double bond is _____ and _____ than a single bond.
Shorter and Stronger - Answer A triple bond is _____ and _____ than a double bond.
Cation - Answer Loses electrons, + charge, roman numbers Fe(II)= Fe 2+
Anion - Answer Gains electrons, - charge
Ammonium - Answer NH4+
with Correct Answers 2026 Updated.
Molecule - Answer A unit of matter that results when 2 or more atoms are joined by
covalent bonds (share electrons).
Ionic Bond - Answer A bond resulting from a complete transfer of one of more electrons
from one atom to another, resulting in the formation of 2 charged particles (ions). The
electrostatic attraction of a cation (loses electrons, + charge, roman numerals) for an anion
(gains electron, - charge).
Nonpolar Covalent Bond - Answer Simple Answer: 2 atoms evenly share 2 electrons.
Complex: A bond characterized by an even distribution of charge; electrons in the bonds are
shared equally by the two atoms.
Polyatomic ions - Answer A charged group of more than one kind of atom joined together by
covalent bond.
Electrostatic Potential - Answer The energy a charged particle has due to its position relative
to another charged particle.
Lattice Energy - Answer The energy released when 1 mole of an ionic compound forms from
its free ions in the gas phase.
Bond Energy - Answer The energy needed to break 1 mole of a particular covalent bond in a
molecule OR polyatomic ion in the gas phase.
Octet Rule - Answer States that atoms of main group elements make bonds by gaining,
losing, or sharing electrons to achieve a valence shell containing 8 electrons, or four electron
pairs.
Bond Length - Answer The distance between the nuclear centers of two atoms joined
together in a bond.
Bonding Pair - Answer A pair of electrons shared between two atoms.
Lone Pair - Answer A pair of electrons that is not shared between two atoms, it is only on
one atom.
, Electronegativity - Answer A relative measurement of the ability of an atom in a bond to
attract electrons to itself when bonded to another atom.
Resonance - Answer A characteristic of electron distributions when two or more equivalent
Lewis structures can be drawn for one compound.
Resonance Structures - Answer One of two or more Lewis structures with the same
arrangement of atoms but different arrangements of bonding pairs of electrons.
Resonance Stabilization - Answer The stability of a molecular structure due to the
delocalization of its electrons.
Formal Charge - Answer A value calculated for an atom in a molecule or polyatomic ion. (# of
valence electrons - (sum of lone pair electrons + number of bonds)).
Bond Order - Answer The number of bonds between atoms. Values are 1 for a single bond, 2
for double, and 3 for triple.
Polar Covalent Bond - Answer Simple Answer: 2 atoms share 2 electrons unevenly (unequal
sharing) and the electrons are more attracted to the more electronegative atom.
Complex:A bond resulting from unequal sharing of bonding pairs of electrons between two
atoms.
Down - Answer As electrostatic potential goes up the distance between particles goes
_______.
Up - Answer As electrostatic potential goes up the product of the charges of the particles
goes _______.
Shorter and stronger - Answer A double bond is _____ and _____ than a single bond.
Shorter and Stronger - Answer A triple bond is _____ and _____ than a double bond.
Cation - Answer Loses electrons, + charge, roman numbers Fe(II)= Fe 2+
Anion - Answer Gains electrons, - charge
Ammonium - Answer NH4+
