Download ionic and covalent bonds

Pg. 56 of IAN
IONIC AND COVALENT
BONDS
OBJECTIVE: To learn the different
types of chemical bonds.
RESEARCH


Octet Rule: atoms want 8 electrons in
the valence (outer) energy level
Ionic Bond: bond in which one or more
electrons from one atom are removed
and attached to another atom. This
creates positive and negative ions which
attract each other. (Acids, bases, salts do
this):
H+ Cl- or
Na+Clusually a metal and a non-metal (Group I
& Group VII)
hydrogen
(group I)
1 valence e-
chlorine
(group VII)
8e-
1 proton
2e17 protons
H+
Cl-
7 valence e-



Covalent Bond: forms between atoms
when they share one or more electrons.
usually 2 nonmetals.
Carbon has 6 electrons (4 in the
valence level). Carbon forms covalent
bonds by sharing electrons.
Pg. 55 of IAN
OUTPUT- Electron Dot Diagrams


Examples: cut and paste CH4 and O2
electron dot diagrams:
Label your diagrams:
CH4 = methane
02 = oxygen
Homework:
 Create
an electron dot model of:
C2H4 (acetylene)
 Answer
the following question:
 What is the difference between
an ionic and a covalent bond?