1. Catalyst

2. Nothing in the world is worth having or worth doing unless it means effort, pain, and difficulty…I have never in my life envied a human being who led an easy life. -Theodore Roosevelt

3. Average % Correct for a 3 on the AP Chem Exam

4. Average % Correct for a 4 on the AP Chem Exam

5. Average % Correct for a 5 on the AP Chem Exam

6. Ask Yourself…

7. Unit 1 Test

8. Thoughts on Exam 1 Naming Compounds – Homework for the weekend Calculator training after school today. You all need to attend…way too many calculator errors were seen Saturday school in the near future! OPTIONAL but we all need it Don’t know the answer? Try to get something on the paper! Units? Units? Where for ought thou units? Homework…NOT OPTIONAL – Change in homework policy

13. Today’s Learning Targets

14. Analyze the Data

15. Ionic Bonding

16. Ionic Bond Formation

17. Coulomb’s Law

18. Lattice Energies

21. Covalent Bonding

23. Lewis Structures

25. Exceptions to the Octet Rule

29. Class Example

30. Table Talk

31. It’s 10 years in the future and you are teaching your own AP Chemistry course (since we all know that is what you all want to do after college) You give a quiz on Lewis Structures. Correct this struggling student’s paper and provide comments

32. Formal Charges Many compounds have more than 1 possible Lewis structure. Formal charges tells us the “right” Lewis structure. Formal Charge – The charge an element would have if all electrons were shared equally. The “best” structure has: 1. Atoms that have formal charges closest to 0 2. Highest negative charge on the most electronegative atom

33. Calculating Formal Charges To calculate formal charge:

34. Class Example

35. Table Talk

36. Class Example

37. Table Talk

38. White Board Practice Answer the following questions on your white board Don’t put up the boards until I tell you too!

39. Question 1 Label the formal charges on the molecule below

40. Question 2 Label the formal charges on the compound below

41. Question 3 Label the formal charges on the compound below

42. Question 4 Draw the Bohr structure for BI 3

43. Question 5 Draw the Bohr structure for SI 5

44. Question 6 Draw the Lewis structure for XeF 6

46. Closing Time Naming Practice Test Error Analysis Worksheet Post – Lab Questions for Lab 3 due Tuesday. NO LONGER A LAB REPORT! Your Welcome