1. Bonding

2. What are compounds? 2 or more elements chemically bonded together
Compounds have different properties than the elements that make them up

3. What Are Molecules?
The smallest unit of a substance that exhibits all it’s properties

4. Chemical structures Shows how a compound’s atoms are connected
Ball & Stick
Space filling

5. Types of Bonds

6. Ionic Bonds Electrons are transferred (not shared)
This is how we get IONS!
IONS are atoms with a charge, either + or -
The positive & negative ions are attracted to one another creating the ionic bond
ELECTROSTATIC ATTRACTION
Happens between a metal & a non-metal
(on opposite sides of the periodic table)

7. Ionic Bond Structure
The positive & negative ions form a repeating pattern that is held together by electrostatic attraction
This leads to the formation of CRYSTALS

8. Metallic Bonds Bonds between metal atoms Atoms are closely packed
Outer orbitals overlap
This allows electrons to move freely
Allows them to conduct electricity & be shaped

9. Covalent Bonds Form when molecules SHARE electrons
This allows both to have full orbitals, or 8 valence electrons
Usually between NON-METALS

10. Most large biological molecules have covalent bonds!

11. Multiple Covalent Bonds

12. Showing Covalent Bonds
Find the symbols
Figure out the Lewis Dot structure
Look for where bonds might form
Draw a line to show shared electrons

13. Sharing Multiple Electrons
If there is a double bond you draw 2 lines
If there is a triple (3) bonds you draw 3 lines