### CH102 General Chemistry, Spring 2019

###### Updated Thursday, May 9, 2019 9:33:18 AM

The Final Exam is Wednesday, May 8, 6–8pm. It will not be given at any other time and failure to take the exam will result in a 0 for that exam, so please make end-of-semester plans accordingly.

Here are the locations, topics, and results of lecture exams, lab exams, and the final exam in this course. The duration of each exam may be shortened.

Your are required to abide by the following exam regulations:

We treat cheating with zero tolerance. The consequences of cheating are at a minimum that the score for work on which cheating occurs counts as 0, and a letter detailing the cheating is sent to the student's advisor, the dean of CAS, and placed in the student's academic file. Possible further consequences are referral to Academic Conduct Committee, and additional penalties, including possible expulsion from university.

Bring only your BU ID, a pen (black or blue ink only), and your Texas Instruments TI-30X IIS 2-Line Scientific Calculator (but you must not bring the calculator cover) to the exam room. No other electronic devices may be used; all electronic communication is forbidden, and all communication devices (including watches) must be placed in airplane mode and stowed away.

Please do your exam in black or blue ink only. Please use only the exam paper provided. Scrap paper may not be used. Points will be deducted for answers reported to an incorrect number of significant figures and if proper units are not used throughout each calculation. A periodic table, physical constants, and major formulas will be provided as appropriate. All work must be shown to receive credit.

Lecture exam 1, Monday, February 25. The exam is based on all lecture, lab, ALEKS, and discussion material through lab 1 (Gas laws) and Mahaffy et al., chapters 10, 11, and 12. You may use only the Texas Instruments TI-30X IIS 2-Line Scientific Calculator, but you must not bring the calculator cover.

The exam is held in the following locations, 6:30–8:15pm (the exam duration may be shortened). Go to the location below according to the first letter(s) of your last name. The building abbreviations below are here and the campus map is here.

• Last name starts with A–C, go to COM/101
• Last name starts with D–G, go to STO/B50
• Last name starts with H–O, go to MOR/101
• Last name starts with P–Z, go to LAW Auditorium

Results: The average score for exam 1 was 71.6/100 = 71.6% (shown as the vertical line); the dashed lines mark 1 and 2 standard deviations from the average; the high score was 100/100 = 100.%; 616 people took the exam. Last updated Tuesday, February 26, 2019 08:04:25.

Lecture exam 2, Monday, April 1. The exam is based on all lecture, lab, ALEKS, and discussion material through lab 5 (Solubility properties), Mahaffy et al., chapters 13, 14, and 15, the Logarithms Tutorial for Chemistry Students, and Overview of acid-base calculations. Note that while the exam focuses on the preceding, it assumes the material from exam 1. You may use only the Texas Instruments TI-30X IIS 2-Line Scientific Calculator, but you must not bring the calculator cover.

The exam is held in the following locations, 6:30–8:15pm (the exam duration may be shortened). Go to the location below according to the first letter(s) of your last name. The building abbreviations below are here and the campus map is here.

• Last name starts with A–C, go to COM/101
• Last name starts with D–G, go to STO/B50
• Last name starts with H–O, go to MOR/101
• Last name starts with P–Z, go to LAW Auditorium

Results: The average score for exam 2 was 63.6/100 = 63.6% (shown as the vertical line); the dashed lines mark 1 and 2 standard deviations from the average; the high score was 100/100 = 100.%; 598 people took the exam. Last updated Tuesday, April 2, 2019 07:55:04.

Lecture exam 3, Monday, April 22. The exam is based on all lecture, discussion, ALEKS, and lab material through lab 6 (Electrochemistry), Mahaffy et al., chapter 16 and the topics of chapter 17 through A1, A2, and A3 lecture 31, and A4 lecture 23,
http://quantum.bu.edu/courses/ch102-spring-2019/lectures.html,
and the following assigned notes:
Oxidation numbers and balancing redox equations,
Standard reduction potentials,
Spontaneity: Second law of thermodynamics,
While the exam focuses on the preceding, it assumes the material from exams 1 and 2. Note that the following topics will not be on this exam: Entropy change perspective of colligative properties, entropy change of reaction, Gibbs free energy change, and temperature dependence of $$K$$. You may use only the Texas Instruments TI-30X IIS 2-Line Scientific Calculator, but you must not bring the calculator cover.

The exam is held in the following locations, 6:30–8:15pm (the exam duration may be shortened). Go to the location below according to the first letter(s) of your last name. The building abbreviations below are here and the campus map is here.

• Last name starts with A–C, go to COM/101
• Last name starts with D–G, go to STO/B50
• Last name starts with H–O, go to MOR/101
• Last name starts with P–Z, go to LAW Auditorium

Results: The average score for exam 3 was 76.6/100 = 76.6% (shown as the vertical line); the dashed lines mark 1 and 2 standard deviations from the average; the high score was 100/100 = 100.%; 567 people took the exam. Last updated Tuesday, April 23, 2019 08:13:11.

Overall scores so far. As detailed here, course grades are assigned based on the distribution overall scores at the end of the course. Based on past experience, it is likely that the average overall score will correspond to a grade in the C+ range. The overall score so far is not a running total of the points earned in the course. Rather, it is an estimate of what your final score, out of 1000 points, would be if you continued to perform at the same level. This means that if you have received perfect scores on all work so far, your overall score so far would be 1000, and if you have received 50% scores on all work so far, your overall score so far would be 500.

Here is the distribution of overall course scores so far, on a 1000-point scale. These scores are based on lecture quizzes, the first nine discussion quizzes, the first six labs, and exams 1, 2, and 3. Your overall score so far will be available on Blackboard. There will be no further updates to the overall score so far

Overall score so far: The average overall score so far, after exam 3, is 725./1000 = 72.5% (shown as the vertical line); the dashed lines mark 1 and 2 standard deviations from the average; the high score was 975/1000 = 97.5%; 602 overall scores are shown. Last updated Wednesday, April 24, 2019 10:57:25.

Lab exam, Monday, April 29.

The exam is held in the following locations, 6:30–8:15pm (the exam duration may be shortened). Go to the location below according to the first letter(s) of your last name. The building abbreviations below are here and the campus map is here.

• Last name starts with A–C, go to COM/101
• Last name starts with D–G, go to STO/B50
• Last name starts with H–O, go to MOR/101
• Last name starts with P–Z, go to LAW Auditorium

Results: ...

Final exam, Wednesday, May 8, 6–8pm. The final exam is based everything covered this semester. Please note that this includes first-order half-life calculations and reaction mechanisms, as covered in ALEKS and in Discussion Plan 13 and Discussion Plan 14 .

The exam is held in the following locations. Go to the location below according to the first letter(s) of your last name. The building abbreviations below are here and the campus map is here.

• Last name starts with A–C, go to CAS/522
• Last name starts with D–H, go to SCI/109
• Last name starts with I–L, go to PHO/206
• Last name starts with M–S, go to LAW Auditorium
• Last name starts with T–Z, go to STO/B50

Results: The average score for the final exam was 90/150 = 60.% (shown as the vertical line); the dashed lines mark 1 and 2 standard deviations from the average; the high score was 150/150 = 100.%; 559 people took the exam. Last updated Thursday, May 9, 2019 09:30:21.