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ionic and covalent bonding notes - PowerPoint by cuiliqing

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									  IONIC AND COVALENT BONDING
1. What are the Two Types of Bonds?
    a. Ionic
    b. Covalent
2. What is an Ionic Bond?
    a. Ionic bonding occurs only between
       metals and non – metals.
    b. Electrons transfer from a metal to
       a non- metal to make 8 valence.
Ionic Bond Example:
a. Na = + 1 oxid. charge

b. Cl =   - 1 oxid. charge

c. NaCl = Sodium Chloride
      ( +1 + - 1 )= 0
What are the Properties
( Characteristics) of Ionic Bonds?
a. High melting and boiling points
   ( hard to melt and boil )
b. Form crystals in a lattice structure.
c. Usually very strong due to lattice
   structure.
d. Very soluble in water
   ( dissolves in water easily)
e. Not very flammable
f. Conducts electricity
What are examples of Ionic Bonds?

a. All Salts
b. Concrete
c. Computer chips
d. Granite
e. Baking Soda
f. Rust
g. Gemstones
4. What is a Covalent Bond?
    a. A bond between two non – metals

   b. Covalent bonds share
      electrons to complete each
      bond for 8 valence.
What are the Properties
( characteristics ) of Covalent Bonds?

a. Low melting and boiling points
  (easy to melt and boil )

b. Irregular shaped molecules

c. Usually soft and squishy

d. Flammable

e. Poor conductor of Electricity
What are examples of Covalent Bonds?

a. Non – metallic materials
b. Plastics - Tires
c. Food
d. Gasoline - Alcohols
e. Wood
f. Water
g. Polymers – Silly Putty, DNA
h. All Sugars

								
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