Reactions

1
Reactions Molecules

• Chapters 9-10

2
Covalent Bonding

• H H gives H2
• O 2 H give H2O
• C 4 H gives CH4

3
Organic Molecules

• Carbon - needs 4 bonds
• Oxygen - needs 2 bonds
• Hydrogen - needs 1 bond
• Single, Double, Triple bonds
• Isomers and Rings
• Basic tetrahedral shape

4
Pentene - C5H10

• Straight chain (versus ring)
• Unsaturated (versus saturated)

5
Ionic Bonding

• NaCl, MgCl2, Na2SO4
• Why is Na and Mg2?
• Why is Cl and SO42?

6
Why does Salt Dissolve?

• Solvation (hydration)

7
Metallic Bonds

• Ion cores stay put
• Electrons act as bath of freely moving particles

8
In Class Assignment

• Model Kits
• C (black), H (white), O (red), N (blue)
• Build and draw picture
• CH4, C2H4, CH3CH2CH2OH
• HCN, NH3, H2O
• C6H6, CH3COCH3