Chemistry 102: General Chemistry II

Transcription

1 Chemistry 102: General Chemistry II Section 3 - Fall 2015 & : 11:00 12:15 in Chapman Hall Room 211 Instructors: Dr. Domenic J. Tiani Office: Kenan Labs Room B128 tiani@ .unc.edu OFFICE HOURS: Wednesday and : 3:00 p.m. 4:00 p.m. in Kenan Labs Room B128 or by appointment. You may also stop by my office anytime and if I will be happy to talk with you if I am available. CLASS WEBSITE: The website for this class is located at http//sakai.unc.edu. You will need to check this site daily for any new class announcements. I will also use this site to post a variety of other course information and material: course syllabus, reading assignments, problem assignments, articles, exam keys, useful websites, and grades. PREREQUISITES: Chemistry 101 (C- or better) and 101L. REQUIRED TEXTBOOKS & EQUIPMENT Required: Chemistry: The Central Science, 12 th ed., Brown and LeMay Student Stores (2 nd Floor), on campus by the Pit. Please do not to ask if you may use a different edition. Solutions to Red Exercises to Accompany Chemistry: The Central Science, 12 th ed., Roxy Wilson. Required: Register for a Poll Everywhere account (Free). o If you have not already registered for Poll Everywhere for another course, you will need to register to enable your poll answers to be associated you. Registration instructions are available at DO NOT sign-up at polleverywhere.com. o Poll Everywhere is free, but you will need to bring a cell phone or laptop to class in order to enter your responses. o If you encounter any technical difficulties, the IT Response Center will be able to help. There are a number of options to receive help: call 962-HELP, drop by the basement of the Undergraduate Library, or submit an online help request at Required: Sapling Learning: Go to the following link and follow the instructions therein to create an account and to register for Sapling: o Course: The University of North Carolina, Chapel Hill CHEM 102 FALL15 Tiani: General Descriptive Chemistry II.

2 o Instructor: Domenic Tiani o Cost: $38.00 v You may purchase your Access Code online through the account creation and registration process online. The bookstore will also have access codes available to be purchased (Help Desk 2 nd Floor of Student Stores) if you are unable to purchase the access code via credit card online. v You will be able to enroll in your course site two weeks before the first day of the term. v Sapling Learning offers a grace period on payment; for most courses, this is 14 days from the first day of the term. During sign up or throughout the term. v If you have any technical problems or grading issues, please direct them to send an to support@saplinglearning.com explaining the issue. Required: ALEKS access code and Registration o You may purchase your ALEKS Access Code online as part of your registration (see ALEKS Instruction & Information document). If you cannot purchase your access code online, the bookstore will also have access codes available to be purchased at the Help Desk (2 nd Floor of Student Stores). o Read the ALEKS Instruction & Information document (Sakai à Handouts à ALEKS Instruction & Information). It is very important that you read this document and follow the instructions to be ready to go with the ALEKS objectives and assessments. For all of you, this will be new and unfamiliar, but it has been shown to be effective in helping students succeed in general chemistry courses. o ALEKS will only be used to help you review your Chemistry 101 topics that you should know coming into Chemistry 102, as well as basic math and physical concepts, through the summer prep assignment. ALEKS will not be used in the course during the semester. Two scientific calculators. Most students have a good scientific calculator (TI-XX). I strongly encourage you to purchase a less expensive basic scientific calculator as a backup calculator. Bring a back-up calculator and extra batteries to every exam. You will not be allowed to share calculators during exams and calculators will not be provided. You are not permitted to use your cellular phone in place of a calculator. SUPPLEMENTAL HELP SESSIONS: There will be supplemental help sessions held each week at various times for anyone who wishes to attend. The time and location of these sessions will be announced in class and under Announcements on Sakai. The help sessions are not required. Please come to these sessions with your textbook, class notes, calculator and questions. The goals of the help sessions are to work on problem solving skills and strategies and to help clarify, as well as reinforce, chemical concepts and lecture material. The help sessions are not required and no new lecture material will be presented.

3 ATTENDANCE: Regular attendance is important to your ability to succeed in this class. I understand that sometimes you may need to miss class. In these circumstances, talk to a fellow classmate to obtain the class notes and come see me if you have questions regarding the material you missed. If you do miss a class, regardless of the reason, you will receive a zero for that day s reading quiz and poll activities grade. Be punctual to class and exams. READING QUIZZES & IN-CLASS ACTIVITIES POLL EVERYWERE Each lecture day, except for the first class of the semester, you will be given a reading quiz at the start of the lecture and you will graded on your in-class participation to poll questions given throughout the lecture using Poll Everywhere. o Reading Quiz: At the start of class, 1 or 2 questions will be asked from the reading assigned for that days lecture. The reading quiz portion of your responses is worth 1.5 points if answered correctly and zero if answered incorrectly. You will use your cell phone or laptop and Poll Everywhere to respond. o In-Class Responses: You will receive 1.5 points for responding to all the in class poll questions presented throughout the lecture, regardless of whether your responses are correct or not. The goal of the in-class questions are to assess your understanding of the material being presented, to allow all students to be participate and engage with the material, and to actively engage students with the material in a variety of ways (clickable images, Word Clouds, problem solving, conceptual questions to critically think about ). The top 21 (out of 24) scores will be used towards this portion of your class grade (see the Exams & Grades section of this syllabus). You must bring your laptop or cell phone to every lecture in order to enter your responses; there is no response device that you need to purchase. There are no make-up activities or assignments for missed reading quizzes and in class poll questions/activities, regardless of the reason. Remember that you will be allowed to drop your three lowest scores. If you forget to bring your cell phone or laptop to enter your responses, you will not receive credit for that day s class participation grade. ALEKS Read the ALEKS Instruction & Information Sheet that was ed to the class and that can be found on the Sakai site for this course under Handouts. This is a long document, but it is detailed and has all the information and requirements that you will need. Take the initial assessment with no help, no aid from textbooks, friends, tutors, anyone. The assessment is just establishing a baseline for you and if you try to game this by using your textbook or other resources, ALEKS will not have an accurate assessment of

4 where you stand with your chemistry knowledge and you will ultimately create more work for yourself. The Chemistry 102 Summer Prep assignment is part of your grade this semester. This assignment is long and can take hours to complete, so start it over the summer and work a little bit at a time. This assignment will bring you up to the level you need to be at for the start of Chemistry 102 with regards to your chemistry foundation. GRADED SAPLING LEARNING PROBLEM ASSIGNMENTS Sapling Learning, will be used to administer prelecture (Warm-Up) problem sets and graded homework assignments throughout the semester. I set up a link to the Sapling Learning website within our class Sakai site. o Graded Warm-Up Assignments: There is a graded warm-up assignment due before each class period, except for the first day of classes. The warm-up assignments start right after class ends and are due the day of the next class by 10:50 am. These warm-up assignments are set up to be 30 min assignments, if you are keeping up with your reading and working end of chapter problems regularly. There is no penalty for incorrect responses and you can keep trying a question up until the due date/time. You can check your answers when you are finished and I recommend that you check the guided solutions for each question, even if you get the question correct. o Graded Homework Assignments: A total of 13 graded Sapling Learning homework assignments will be given throughout the semester, the dates of which are listed on the class schedule at the end of this syllabus. The top 11 (out of 13) graded homework assignments will be used toward your class grade. All graded assignments are to be worked on independently, with no outside help of any kind: fellow students, friends, TAs and teachers. Any collaboration will be treated as a violation of the student Honor Code and will be handled accordingly. Graded HW assignments will begin on s at 9:00 pm and be due the following Monday by 12:00 noon. You will be given 4 attempts for each problem and you will lose 10 % of the points for each incorrect answer. These grading parameters will be provided with each assignment. Take the time to think about how to work through the problems and look at problems you have worked in class, at the end of the chapter and within the chapter, if you get stuck with how you think you should work a problem.

5 No late assignments will be accepted for any reason, and extensions are not permitted except under extenuating circumstances. The Sapling Learning clock will be used in deciding if an assignment has been completed on time. This clock may differ from your computer s clock, your dorm clock or your watch, so DO NOT wait until the last minute to complete and submit your graded assignments. READING & PROBLEM ASSIGNMENTS The end-of-chapter problems assigned are not graded. The end-of-chapter problems assigned are meant to assess your understanding of the lecture material and I strongly encourage you to work through these problems as we cover the material in class. Problems from the end-of-the chapter will be assigned for you to work after each lecture. Typically the red problems will be assigned because you can check the answers to these problems in your solutions manual. However, I recommend that you work the black problems if you need extra practice and want to further assess your understanding of the material. If you work the black problems, there is a solutions manual for all the exercises in your textbook located in the Chemistry Resource Center (Kenan Labs Room C143) that you can use to check your answers to these problem. I am also happy to talk with you regarding any problems you are having difficulties with. Do not put off the reading and problem assignments. There is a lot of material covered between exams and you want to make sure you have the time to reinforce the concepts you are learning, identify those areas you are having trouble with, or have questions on, and to seek help from us to solidify your understanding and master the concepts before the exams. Problem and reading assignments from your textbook will be posted on Sakai under Assignments. Read the assigned sections before each lecture and re-read the sections after each lecture, while the material is fresh in your mind. When working through problems, it is also useful to go back and reread those sections that are pertinent to the type of problem you are working. Try to work problems with as little aid from your solutions manual as possible. If you consistently find yourself turning to the solutions manual to work a problem or problems, go back and re-read the text and your notes, and then try to work the problem(s) again. Try to avoid working problems to simply come up with an answer. Focus on understanding the concepts and problem solving strategy behind each problem. Work the sample and practice exercises in each chapter. As you finish reading a section, take the time to work these exercises to assess your understanding of what you just read. In addition, I strongly encourage you to work the Give It Some Thought questions throughout each chapter. The answers to these questions can be found at the end of your textbook on pages A-33-A-40.

6 EXAMS & GRADES Three exams will be given throughout the semester on the following days: Exam 1:, 9/15 Exam 2:, 10/13 Exam 3:, 11/17 The Final Exam is cumulative and is scheduled for, December 10 (12:00 noon 3:00 pm) in Chapman Hall Room 211. There are no make-up exams. If you miss an exam for any reason, this will become your dropped exam score and your grades will be determined based on Option 2 below. Your letter grade for the course will be based on your overall weighted percent score from the following list of graded work this semester. There are two options that will be used to determine student grades and I will use the option that gives you the highest overall grade. In Option 1, all three one-hour exams (each worth 18 %) are used. In this option, the final is weighted 30 %. In Option 2, the top two one-hour exams (each worth 22 %) are used and the final is weighted 40 % of your grade. The one-hour exams are still 100 points and the final is still 200 points, the weightings are all that change. I will look at each student s grades to determine which option gives the higher overall grade. However, if you miss an exam for any reason, then you will have to use Option 2. OPTION 1: 3 Semester Exams (100 points each; 3 x 18 %) 54 % Top 21 (of 24) Reading Quizzes/In-Class Response Activities (3 Points Each) 3 % Sapling Learning Work 10 % 24 Warm-Up Assignments (5 points each; 4 %) Top 11 (of 13) Homework Assignments (10 points each; 6 %) ALEKS: Summer Prep 3% Cumulative Final Exam (200 points) 30 % Total 100 % OPTION 2: 2 Semester Exams (100 points each; 2 x 22 %) 44 % Top 21 (of 24) Reading Quizzes/In-Class Response Activities (3 Points Each) 3 % Sapling Learning Work 10 % 24 Warm-Up Assignments (5 points each; 4 %) Top 11 (of 13) Homework Assignments (10 points each; 6 %) ALEKS: Summer Prep 3% Cumulative Final Exam (200 points) 40 % Total 100 %

7 The letter grades for the course will be determined based your overall percent score using the following grade cutoffs. Final Average Letter Grade A A B B B C C C D < 50 F HONOR CODE: Policy adopted by the faculty of the Department of Chemistry on Sept. 9, 1977: Since all graded work (including homework to be collected, quizzes, papers, mid-term examinations, final examinations, research proposals, laboratory results and reports, etc.) may be used in the determination of academic progress, no collaboration on this work is permitted unless the instructor explicitly indicates that some specific degree of collaboration is allowed. This statement is not intended to discourage students from studying together or working together on assignments which are not to be collected. CLASS SCHEDULE: Below is a tentative class schedule for the semester. You should note that this schedule is subject to change; any changes will be announced ahead of time in class. The specific reading assignments for each lecture will be posted on Sakai under the Assignments tab well before each scheduled lecture. Date Lecture Text Sections 11.1 & 11.2 Welcome & Chapter 11: Intermolecular Forces Review Sections 8/18 9.1, 9.2, & 9.3 8/20 Chapter 11: Intermolecular Forces Chapter 14: Introduction to Chemical Kinetics - Rates of Chemical Reactions & Effects of Concentration on Reaction Rates Graded HW # 1 Begins: 9:00 pm 11.1 & 11.2 Review Sections 9.1, 9.2, & , 14.2, & 14.3

8 8/25 Chapter 14: Effects of Concentration on Reaction Rates, Integrated Rate Laws, and Half-Lives /27 9/1 Chapter 14: A Molecular View of Kinetics, Activation Energy, Catalysts, & Reaction Mechanisms. Graded HW # 2 Begins: 9:00 pm 14.6 & 14.7 Chapter 15: Introduction to Chemical Equilibrium 15.1 & /3 Chapter 15: Chemical Equilibrium Graded HW # 3 Begins: 9:00 pm 15.3, 15.5, & /8 9/10 9/15 9/17 9/22 9/24 9/29 10/1 10/6 10/8 10/13 10/15 Chapter 15: Chemical Equilibrium & Le Châtelier s Principle Finish Any Remaining Chapter 15 Material Chapter 19: Spontaneity and Entropy Graded HW # 4 Begins: 9:00 pm Exam 1 (Chapters 11, 14, & 15) Chapter 19: Entropy, Enthalpy, & Spontaneity / Gibbs Free Energy and Spontaneity Graded HW # 5 Begins: 9:00 pm Chapter 19: Gibbs Free Energy Chapter 16: Acid-Base Equilibria Chapter 16: Acid-Base Equilibria Graded HW # 6 Begins: 9:00 pm 15.5, 15.6, & & Chapter 16: Acid-Base Equilibria Finish Any Remaining Chapter 16 Material Chapter 17: Common Ion Effect and Buffers Graded HW # 7 Begins: 9:00 pm & & 17.2 Chapter 17: Buffers and Acid - Base Titrations 17.2 & 17.3 Chapter 17: Acid Base Titrations / Solubility of Salts and Precipitation Reactions Graded HW # 8 Begins: 9:00 pm Exam 2 (Chapters 19, 16, & 17) Fall Break No Graded HW Assignment

9 10/20 10/22 10/27 10/29 11/3 11/5 11/10 11/12 11/17 11/19 11/24 11/26 12/1 Chapter 17: Finish Solubility of Salts and Precipitation Reactions Chapter 10: A Molecular View of Gases, Gas Characteristics and Pressure Chapter 10: A Molecular View of Gases & Gas Pressure, Gas Pressure, and a Macroscopic View of Gases Graded HW # 9 Begins: 9:00 pm Chapter 10: The Ideal Gas Law, Applications of The Ideal Gas Law, Gas Mixtures, and Non-Ideal Gas Behavior (Real Gases) Finish Any Remaining Chapter 10 Material Chapter 11: Properties of Liquids, Effect of Intermolecular Chapter 12: Solids, Types of Solids, & Properties of Solids Graded HW # 10 Begins: 9:00 pm Chapter 12: Metallic, Ionic, Molecular & Covalent- Network Solids Chapter 11: Phase Diagrams and Phase Changes Finish Any Remaining Chapter 11/12 Material Chapter 13: Solutions, The Solution Process, Solubility, & Units of Concentration Graded HW # 11 Begins: 9:00 pm Chapter 13: Effects of Temperature and Pressure on Solubility & Colligative Properties Colligative Properties Chapter 13 Graded HW # 12 Begins: 9:00 pm Exam 3 (Chapters 10, 11, 12, & 13) Chapter 20: Redox Reactions, Balancing Redox Reactions, & Galvanic Cells Graded HW # 13 Begins: 9:00 pm Chapter 20: The Nernst Equation and Applying the Nernst Equation Thanksgiving No Class No Graded HW Assignment Electrochemistry Review Problem Set Last Class: Chapter 20: Electrochemistry and Thermodynamics, Electrolysis, & Wrap - Up 17.5, 10.1, 10.2, 10.7, & , 10.7, 10.8, 10.1, 10.2, & & , 11.5, 12.1, 12.2, & , 12.6, 12.7, 11.4, & & , 20.6, & 20.9