Bonds

1
Bonds

• (Not James)

2
Review

• Covalent bonds
• Share outermost electrons

3
Review

• Ionic bonds
• Opposite charges attract
• Each element will change their number of
  electrons

4
Ions

• Cation
• Anion

5
Metallic Bonds

• Metallic cation is held by Free electrons

6
Metal Properties

• Melting and Boiling points
• Malleability
• Hardness
• Strength
• Thermal conductivity
• Electrical conductivity

7
Metallic Alloys

• An alloy is a mixture of elements that has
  metallic properties.

8
Alloys

• Brass
• Bronze
• Cast Iron
• 18-carat Gold
• Pewter
• Steel
• Sterling Silver

Page 228
9
Balancing Formulas

• Charty Dude 9 will help
• Page 218 and 219 will also help

10
Balancing Formulas

• Find the charge for each material
• Add up the charges
• If the total ? 0, add a subscript multiplier to
  get the total to 0
• Recheck

11
Balancing Formulas

• K2 O
• Mg Cl2
• Na3 N
• Al P
• Si F4

• K O
• Mg Cl
• Na N
• Al P
• Si F

12
Balancing Formulas

• Ag2 S
• Ni I2
• Zn3 P2
• C At4
• Mn P
• Mn3 P2

• Ag S
• Ni I
• Zn P
• C At
• Mn P

13
Balancing Formulas