Chemical Bonds
How are chemical bonds made?
Chemical bonds result from the attraction of nuclei for electrons.
What is the Lewis Dot Structure?
It is a simplified representation of the valence electrons in a molecule.
What is a subscript?
Indicates the # of atoms of the preceding element in a molecule.
Sodium Carbonate
Na2(Co3)
HCI
Hydrochloric Acid
What is the octet rule?
The octet rule allows so that each atom can have 8 electrons in his highest energy level.
What rule does the Lewis dot structure demonstrate?
The octet rule
What charge does a cation have
positive
Aluminum Nitrite
Al N
Hydrobromic acid
What is the difference between Ionic and covalent bonds?
covalent bonds involve the sharing of electrons between 1 or more atom while Ionic bonds form when 2 or more atoms together.
C
.
. c .
.
what charge does a anion have?
Negative
Hydrogen Monofluoride
HF
HI
Hydroiodic acid
What are the properties of metallic bonds?
- high melting point temperatures
-hard substances
-good conductor of heat and electricity.
Si
.
. Si .
.
ZnO
Zinc Oxide
Xenon tetrafluoride
XeF4
HNO3
nitric acid
What are some exceptions?
Hydrogen and Boron
P
..
. P .
.
KClO3
Potassium Chlorate
Aluminum cyanide
Al(CN)3
H2SO3
sulfurous acid