1. Do Now Describe the difference between an ionic bond and a covalent bond.

2. Aim What do we know about chemical bonding so far?

3. Basics Atoms form bonds to become stable When atoms bond, they attain the electron configuration of But which one?

4. Basics How do we know how many electrons an atom loses or gains?

5. Lewis Structures 1.Draw the atomic symbol 2.Draw one dot per the atom has

6. Ionic Bonding Ionic bonds form between and We call these compounds In an ionic bond, electrons are from one atom to another

7. Ionic Bonding Draw a Lewis Structure for NaCl Draw a Lewis Structure for K 2 S

8. Covalent Bonding Covalent bonds form between two We call these compounds In a covalent bond, electrons are between both atoms Each bond represents electrons

9. Covalent Bonding Draw a Lewis Structure for CH 4 Draw a Lewis Structure for NH 3

10. Covalent Bonding Two structures with the same chemical formula are called Draw two structures for C 2 H 6 O

11. Complex Ions A molecule can act as an ion Draw the Lewis Structure of the molecule, then make it look like a salt Example: CaCO 3

12. Complex Ions Some complex ions violate the For these we use oxidation states Oxidation states represent

13. Complex Ions Draw a Lewis Structure for SO 4 - Draw a Lewis Structure for CrO 4 2-

14. Questions, comments, concerns?