Transcript Stability in bonding

Stability in Bonding
You will be learning:
1. How a compound differs from its
component elements.
2. What a chemical formula
represents.
3. Why chemical bonding occurs.
• Compounds – two or more elements joined
together by a chemical bond
• Chemical bonds create new substance with
new properties
• Chemical formulas tell what elements are in
the compound, as well as the number of each
element
Subscript tells how many there are of each
element
Atomic Stability
• Noble gases have 8 valence electrons, so they
are stable and do not join with other elements
• Atomic stability comes :
– Opposites attract (positively/negatively charge
atoms)
– Shared electrons to make the valence level feel
full
Atoms join by chemically bonding
Which element is not part of the
compound NH4NO3?
A.
B.
C.
D.
nitrogen
nickel
oxygen
hydrogen
A, B, C, D
When an atom is chemically stable,
how many electrons are in its outer
energy level?
A. 0
B. 7
C. 4
D. 8
What type of chemical bond is
shown below.
F H