Chapter 6 Review Flashcards
Ionic Bond
Results from the electrical attraction between cations and anions
Covalent Bond
Results from sharing e- between 2 atoms
Metallic Bond
Results from attraction between metal atoms and the surrounding “sea of electrons”
Molecular Compound
A substance made up of molecules
Bond Energy
Energy required to break a covalent bond and form a neutral atom
Bond Length
Distance between 2 covalently bonded atoms at their minimum potential energy
Ionic Bond
A chemical bond resulting from the attraction between (+) and (-) ions
Lattice Energy
Energy released when one mole of an ionic crystalline compound is formed from gaseous ions
Higher Melting Point (Ionic vs. Molecular)
Ionic
Higher Boiling Point (Ionic vs. Molecular)
Ionic
Conducts Electricity (Ionic vs. Molecular)
Ionic
Gas at Room Temp (Ionic vs. Molecular)
Molecular
Dissolves in Water (Ionic vs. Molecular)
Ionic
What is meant by “sea of electrons”
Electrons flow through metals
What are 3 properties of metals
Good conductors of heat, electricity, and light
Chemical compounds tend to form so
that each atom has an octet of
electrons in its highest occupied energy
level is a statement called what?
Octet Rule
How are chemical bonds formed
They tend to form so that each atom can either gain, lose, or share electrons to have 8 in their highest energy level
Intermolecular Forces
Forces of attraction between molecules- specifically polar
Explain the impact of intermolecular forces on boiling and evaporation points
They can impact boiling and evaporation points because if they have weaker dipole then they can boil and evaporate quicker than if they had a strong dipole.
The property of metals stating that
they can be drawn into a wire is called what?
ductility
The ability of a metal to be hammered
into thin sheets is called what?
malleability
This force is very weak, only happens
momentarily, and only occurs in
nonpolar molecules.
London dispersion forces
T or F: Dipole-dipole forces are
forces of attraction between polar
molecules.
True
Simplest collection of atoms from
which an ionic compounds formula
can be established is called a what?
formula unit
Bond in which the bonding electrons
are shared equally is called _____.
nonpolar covalent
Bond in which the bonding electrons
are not shared equally is called
_____.
polar covalent
True or False: As bond energy
increases, the length of the bond
gets longer.
false, the higher the energy needed to
break the bond, the shorter the bond.
A neutral group of atoms that are held
together by covalent bonds is called
a(n) _____.
molecule
A pair of electrons that are not
involved in a chemical bond is called
a(n) _____.
unshared pair
Attraction between a hydrogen atom
and an unshared pair of electrons on a
N, O, or F atom on a nearby molecule is
called a(n) _____.
hydrogen bond
