Octet Rule Exceptions,Resonance
Read Chapter 8 (361-367)
End of Chapter problems: 5, 7, 9, 11, 13, 15
OWLs due Sunday, November 15
Octet Rule Exceptions,Resonance
Read Chapter 8 (361-367)
End of Chapter problems: 5, 7, 9, 11, 13, 15
OWLs due Sunday, November 15
Lewis symbols, Covalent Bonding, Lewis electron dot formulas, Formal Charge
Read chapter 8 (349-360)
OWLs due Thursday.
The makeup for Exam 2 will be on Tuesday, November 10 at the very popular time of 8:00AM – 9:00AM. This is due to the limited availability of rooms for testing use.
It will be in ISB 221.
It will be 26 questions, multiple choice in format. Bring pencils and a calculator.
****TEST # 2 ***** ***During Regularly Scheduled Class***
Answers for Exam 2: ExamView – Test2, 2009
Announcements:
1)The material covered for this exam was more difficult than that of the first exam – it is normal for the scores to be a little lower. Average = 64, as calculated below. I will post a histogram tomorrow.
2) The exam scores were calculated as follows: (# correct)x(4) + 4 = score.
3) one question was worded poorly, so I gave everybody 4 points for that question (see above)
4) the exam answer key had a mistake on each exam form: The correct answer to ion radius is Br- (Form A, #14; varies from form to form). This mistake was corrected prior to calculating the scores above.
5) In order to help normalize scores, I will do the following: Your percentage score on the final exam will replace that of your lowest midterm, provided that this will improve your score. (eg: MT = 62/100, final = 90/120. Your MT score would get dropped, and replaced by a “75”.)
Energy revisitation.
periodic trends in oxides, halide, hydrides
review Ch 5, 7, 21