MOLECULAR COMPOUNDS
Ms. Martino’s SNC2P
Molecular Compounds
Molecular compounds are formed when two
non-metals share
covalent
_______________
electrons in a _______
bond.
•
Example: _______________________
Carbon dioxide CO2
Molecular Compounds
A ____________
is the
covalent bond
sharing of electrons to fill
a ___________
valence shell
•
Whereas an _________
is
ionic bond
when electrons are
transferred
__________
causing atoms
to become _________
charged.
oppositely
•
Molecular Compounds
Different atoms require a different number of
electrons to fill their valence shells.
•
This means that atoms have different
_________________.
combining
capacities
•
•Combining
_________________:
number
capacities
of ________
bonds a
covalent
non-metal needs to form a stable molecule
Molecular Compounds
Most atoms follow the
_________:
each atom in a
Octet Rule
molecular compound will
form enough covalent
bonds to have _____
eightvalence
electrons
•
Molecular Compounds
A covalent bond consists of at least ________
of
one pair
shared electrons.
•
Each pair of shared electrons results in a ______
bond.
single
•
•Elements
that need only one more
electron to complete an outer shell
form ___________
single bonds
Hydrogen and chlorine)
(i.e.;
Molecular Compounds
Elements that need two electrons to complete
an outer shell can form _______________
or one
two single bonds
_______
doublebond
•
CH4
CO2
N2
Molecular Compounds
When two of the same type of atom
bond together, they are called diatomic
_______
elements or ________
diatomicmolecules.
•
•Diatomic
H2
Molecules: H
_______________
O F Br I N Cl
O2 F2
Br2 I2 N2
Cl2
COVALENT VERSUS IONIC BONDS
VIDEO
http://www.youtube.com/watch?v=QqjcCvzWw
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Naming Binary Molecular
Compounds
________
are added to
Prefixes
both non-metals in the
compound.
•
•The
prefixindicates the
_____
_______
of atoms of
number
each element in the
molecule.
MonoDiTriTetraPentaHexa-
1
2
3
4
5
6
Notes:
the prefix “mono-” is often left out when there is
only one atom of the first element in the name.
•
Example: _______________________________
CO2
carbon dioxide
When using the prefixes such as “mono-”, “tetra” (the prefix ends in an “a” or “o”) with oxygen, the
last “a” or “o” in the prefix is dropped
•
Example: _______________________________
Carbon monoxide, sulfur pentoxide