1. 3 Types of Chemical Bonds
Ionic
Covalent
Metallic
What can you describe about each of these
bonds just by looking at the name?

2. IONIC BONDS
Form when metals bond with non-metals
Involve the transfer of valance electrons from metal atom to the non metal atom
-Sodium (Na) has 1 valance electron. Calcium has 7 valance electrons. They combine to make 8 valance electrons.
-Since sodium lost an electron it becomes positive
-Since Calcium gained an electron, it becomes negative
Example - Sodium Chloride (NaCl)

3. COVALENT BOND Form when non metals bond to non metals.
The atoms share electrons to add up to 8.
Flourine atoms have 7 valance electrons. They get together and share 1
with each other so they both have 8. They don’t give the electron away
like in ionic bonds

4. how the electrons do not just stay with one ion
Metallic Bond
Occurs between atoms of metals .
The electrons move freely from one atom to the next
The movement of electrons in metallic bonds explains electric conductivity of metals.
Al3+ - - -
Notice
how the electrons do not just stay with one ion - - - - - - - - - - -