CHM 152 Syllabus

Transcription

1 CHM 152 Syllabus General and Inorganic Chemistry II Class: MTWF 9:00-9:53 am, T115 Class and Lab: T 10:00-12:53 pm, T115/A105 Instructor: Serena Mershon-Lohkamp Office Phone: x266 serenam@gogebic.edu Cell Phone: (call or text before 10:00 pm) Office Hours (ACD 106): TBD. I have an open door policy so you are welcome to stop in anytime I am in my office, however, I would suggest an appointment if you want a guaranteed time outside of my office hours. Please do not hesitate to see me with any questions or concerns. *NOTE* The 10 min prior to my class periods is not the appropriate time to see me it is inconsiderate to both of us to do so. Required Items: Mastering Chemistry Access Code for Chemistry: The Central Science by Brown et. al. 12 th ed - available in bookstore and online at Scientific Calculator needed asap; use of any phone or any internet-connected device as a calculator during tests/quizzes is prohibited Chemistry Lab Notebook, carbonless copy - available in bookstore Safety Splash Goggles (NOT glasses) - available in bookstore High speed internet access Recommended: - college level general chemistry textbook, such as Chemistry: The Central Science - 3-ring binder (min 2 inches) - An open mind and willingness to learn Course Prerequisite: CHM 151 (completed with a grade of C or Higher) Course Description: This course is the second semester of a two semester series, designed for science majors and pre-professional students, which endeavors to provide a foundation for understanding the properties of matter in terms of its atomic and molecular constitution. Emphasis is on the qualitative comprehension of chemical principles and the application of those principles to quantitatively addressing problems. The accompanying laboratory offers reinforcement of the lecture topics and/or introduction of additional concepts by providing hands-on experience in working with chemicals and scientific instrumentation. Teaching Philosophy: An institute of higher education should be a place to develop and implement critical thinking skills for the betterment of the individual and society. Such skills must be cultivated by exercising the brain to make connections based on learned principles, not by solely memorizing facts. A transfer course at a community college should cover the same material and uphold the same standards as the same course at a four-year institution. The academic advantage to taking the course at a community college is the extra assistance in the learning process provided by the instructor. As the instructor, I am here to assist you in developing your critical thinking skills while learning chemical principles. The extra assistance I offer comes in the form of such things as lectures, worksheets, and labs that I continually refine based on my experience with students at this institution, graded work and lab reports offering specific feedback, opportunities to improve on assessments, an open-door policy for seeking help outside the classroom, etc. I am here to set attainable, yet challenging standards and to serve as a facilitator of the material, however, the responsibility of exercising sincere effort in the learning process and achieving understanding of concepts rests with the student. If you do not understand the material, it is your duty to use all available resources to develop an understanding. I am always willing to help just ask!

2 CHM 152 Spring page 2 Course Learning Outcomes: This course provides the opportunity for a student to build valuable critical thinking and problem solving skills while developing an appreciation for the relevance of chemistry in his/her everyday life and for the interconnectedness of the world on a microscopic level. Thus, this course is designed so the student will be able to: 1. Utilize chemical principles, vocabulary, and symbolism to explain macroscopic physical and life science concepts at the atomic/molecular level. Linked Institutional Outcomes: Communication and Expression, Community & Global Consciousness and Responsibility 2. Construct solutions to both qualitative and quantitative chemistry related problems using a logical, systematic approach. Linked Institutional Outcomes: Critical Thinking and Information Competency, Quantitative and Technological Competence 3. Formulate chemical principles based on pattern recognition. Linked Institutional Outcomes: Community & Global Consciousness and Responsibility, Critical Thinking and Information Competency 4. Design and carry out investigations of chemical phenomenon based on the scientific method. Linked Institutional Outcomes: Communication and Expression, Quantitative and Technological Competence 5. Accurately, precisely, and safely utilize chemistry laboratory techniques to carry out standard operating procedures. Linked Institutional Outcomes: Critical Thinking and Information Competency, Quantitative and Technological Competence Major Concept Outcomes: This list does not include every expected outcome for each lesson, but does include the major themes and competencies of the course (thus expect to see these on the final). Upon the completion of this course, students should be able to: 1. Use the kinetic-molecular theory to explain and predict the behavior of gases 2. State and correctly utilize the ideal gas equation and Dalton s law of partial pressures 3. Interpret phase diagrams, enthalpy diagrams, and reaction coordinate diagrams 4. Recognize three colligative properties of solutions and their consequences in nature 5. Identify the enthalpy and entropy changes associated with phase changes, solution formation, and chemical reactions 6. Write, interpret, and perform calculations with rate expressions and rate laws 7. Utilize collision theory and transition state theory to explain the temperature and concentration dependence of reaction rates 8. State the relationship between reaction rate, activation energy, and reaction mechanism 9. Write, interpret, and mathematically utilize chemical equilibrium constant expressions 10. Use Le Châtelier s Principle to predict /calculate the changes that occur upon disturbing equilibrium 11. Recognize substances as acids, bases, Lewis acids, or Lewis bases and their reactions 12. Predict the net direction of reaction equilibrium based on thermodynamics and various types of equilibrium constant values 13. Use chemical reactions to explain how buffers work 14. Perform fundamental calculations related to acids, bases, and buffers 15. State, interpret, and apply the three laws of thermodynamics 16. Explain what is occurring at equilibrium with respect to concentrations, kinetics, and thermodynamics 17. Explain the thermodynamic basis for why solutions form and reactions occur 18. State how Gibbs free energy, entropy, and spontaneity are related 19. Explain how voltaic cells and batteries work 20. Qualitatively and quantitatively use standard reduction potentials 21. Maintain a laboratory notebook consistent with accepted scientific practices

3 CHM 152 Spring page 3 CLASS POLICIES Attendance Lecture: If you miss a class period, it is your responsibility to get the notes from another student. You ve already taken one semester of CHM, thus you know the importance of attending class. The instructor reserves the right to take attendance into consideration of your final grade. Lab: Attendance is mandatory. Do NOT schedule appointments during any part of the three hour block scheduled for lab. If you know you will not be in lab, please notify the instructor as soon as possible so the lab can be planned accordingly and excess waste avoided. School/Class Cancellations If school/class is cancelled, you are expected to check Moodle and complete anything newly assigned. Moodle will be updated that day by the regular class time with any assignments that should be completed before the next class period. This allows the course to remain mostly on track and helps prevent the excessive rushing through material due to unexpected closures. Homework Lecture: The total homework grade will be calculated as a weighted average (50% MC + 50% lecture). MC will be due the day of the test. MC percentage will be based on percent completion of assignments receiving a grade of 60%. Late lecture hmwk will be accepted for 50% credit within one class period of original collection. Even though hmwk is a small percentage of your formal grade, it is worth a LOT towards learning the material for tests!! If you have difficulties with the problems, consult me or a tutor asap! Accessing Mastering Chemistry online Homework: - Log in at click Enroll in a New Course - enter course ID: CHM152SP1516 Lab: Pre-lab work is due at the start of the lab period (late pre-labs will be accepted for 50% credit if turned in before the graded prelabs are returned). Notebook pages and/or lab reports will typically be due by 3:00 pm on the Friday of the week s lab. See also Laboratory Notebook Guidelines handout. Quizzes Short quizzes will be given most Tuesdays. Each will be based on material covered during the previous week. One missed Tuesday quiz can be made up, but only if you ask before the quiz is returned. In addition, unannounced quizzes may be given at any time over any previously covered material; these cannot be made-up for credit if missed. The lowest quiz grade will be dropped. Exams Regular Exams: There will be 5 regular tests (see Course Outline for approximate dates, exact dates will be confirmed in class). Each test will focus on the topics covered since the previous test, but due to the nature of chemistry, there will a hefty comprehensive aspect to each one. Any material previously covered during the semester is fair game for a test. *ONE missed exam due to severe weather (but college open) can be made up, but only if the instructor is contacted that day. The test must be taken the next school day. Severe illness, medical emergencies, and family deaths are the only other excuses that will be accepted for the opportunity to take a make-up exam. Documentation is required. *Tests must be returned to the instructor after reviewing in order to receive a grade. Final Exam: The final will be comprehensive i.e. it will test elements from the entire semester. Start preparing for this test today: study to actually internalize the material instead of simply memorizing for each test. Then start reviewing at least two weeks in advance of the final. Opportunities to Improve Test and Homework Grades A student may choose to make corrections on ONE regular exam and earn up to 60% of the missed points back. Corrections are to be done on a separate sheet of paper and turned in, along with the original test. See Guidelines for Test Corrections handout. The lowest grade of the five regular exams or total homework grade (each worth 9% of course grade) will be replaced by the percentage earned on the comprehensive final (but only if the final percent is higher). If you miss an exam that is not excused, that will be your replacement exam.

4 CHM 152 Spring page 4 Grading Distribution: 5 Exams 45% Lab 22% Final 13% Quizzes 11% Hmwk 9% Scale: A 90% B % C % D 66-55% A-* B 84-80% C 74-70% F < 55% B- * C % *An A- or B- may be given for borderline percentages at the instructor s discretion. Note about grades: An approximately 15% curve, i.e. a ONE AN A HALF LETTER GRADE curve, is built into the course through extra points available on tests, quizzes, homework, and labs, thus grades extra credit for individuals is not available please don t ask for it. Academic Honesty GCC Policy: Dishonesty of any kind, including cheating on examinations or any assigned work, may be dealt with in any manner deemed suitable by the instructor, including the recording of a failing grade for the course. Cheating on examinations may also result in the student appearing before the Student Personnel Committee and possible suspension from school if circumstances warrant. Instructor Policy: Students are encouraged to work together in the exchange of ideas, discussion of assignments, and when preparing for tests, but anything turned in for credit must be your own work unless it is designated to be turned in as group work. First offense -you and the person you copied from fail the assignment/quiz/test. Second offense -you fail the class and will be reported to the administration. Miscellaneous Moodle will include the week s assignments and lecture slides. The lecture slides will often be available before class for students to fill in. If you are absent, check online for missed items. Tardiness is distracting to students and the instructor. Extra time to complete a quiz or test due to tardiness will not be granted. Asking and answering questions will be vitally important if you and I are to communicate effectively in this class. Please do not be intimidated by my questions -there is no intent to embarrass you. Please do not be intimidated to ask questions there is no such thing as a stupid question. Also, please treat others in the class who ask questions or respond to questions with respect. Many chemistry students find that a tutor is very helpful. Please visit Student Support Services in the ACES center if you would like the extra assistance in being successful. Cell Phones are to be turned off during the class period. Laptops may only be used for taking notes. Surfing the Internet, watching movies, etc. during class time are not permitted the laptop will be confiscated for the remainder of the class period. The use of an audio recording device is permitted and encouraged during the instructor s lecture. There is a suggestion/comment box in the lab. Any positive or critical suggestions, comments, or ideas you have concerning anything in the class or lab that may enhance or hinder your learning experience are appreciated. I make mistakes in lecture, in grading, in handouts, on quizzes, and on tests. Please question/correct me when you suspect these errors so I can correct the mistake and hopefully clear up or prevent any confusion. ADA Accommodation Statement for Students with DisabilitiesIf you believe that you need academic accommodations for a disability that qualifies under the Americans with Disabilities Act and Section 504 of the Rehabilitation Act, please contact the Office of Disability Services, located in office T105C of the ACES Center, call (906) x 237, or jessicaln@gogebic.edu to discuss your needs and the process for requesting accommodations. This office is responsible for coordinating disability-related academic accommodations and will issue students with verification letters as appropriate. Since accommodations may require early planning and generally are not provided retroactively, please contact the office as soon as possible. Severe Weather Policy: You will not be penalized if you are unable to attend due to severe weather. Notify the instructor via phone or . In cases of extremely severe weather, the college may close. Local radio stations will be notified by 6:30 am to make announcements (2:00 pm for evening classes).

5 CHM 152 Spring page 5 Course Schedule Provided below is a general outline of the order in which topics for this course will be discussed and an approximate time line. Exact dates for tests will be confirmed in class one week prior to the exam. Depending on the flow of the class, sections may be added, deleted, or moved around. The instructor will indicate if this occurs. Decimals in front refer to sections in Chemistry: The Central Science, 12 th Ed by Brown, et al, decimals/pages in parenthesis refer to sections in 11 th edition when different. Week 1 Gases 10.1, Characteristics, comparison to liquids and solids worksheet: review of intermolecular forces 10.2 Measurable properties of gases; definition and units of pressure 10.7 Kinetic-molecular theory (WHY gases behave as they do) Gas laws and Ideal gas equation (HOW gases behave) 10.5 Calculation of density, molar mass, and gas volumes in rxns 10.6 Gas mixtures, Dalton s Law of Partial Pressures, mole fractions LAB: Gas Laws: Egg in a Bottle and Air Bags (dry lab) Week 2 Gases (con t) Effusion vs. diffusion, mass and speed relationship 10.9 Behavior of real gases, van der Waals equation p , 790, 19.3 Spontaneous expansion of gases; introduction to entropy (p 802, 806) Phase Changes 11.4, p791, 19.3 Thermodynamics of phase changes; 3 rd Law of Thermodynamics (p807) 11.5, 11.4, p Vapor pressure, boiling point, critical T & P, supercritical fluids (p ) 11.6 Phase diagrams (P-T diagrams) Solutions 13.2 Solutions, solubility, and saturation definitions 13.1, 13.3 Thermodynamics of solution formation; IM forces 13.4 Concentration expressions and calculations LAB: Well Wishes Case Study: Calculations, Beer s Law Review (dry lab) Week Concentration expressions and calculations (con t) LAB: Well Wishes Case Study: Spectroscopic Determination of Nitrate in Well Water ******************************** TEST 1 - FRIDAY, WEEK 3 (?) ******************************* Week 3 4 Solutions (con t) 13.3 Factors affecting solubility: IM forces, pressure, temperature 13.5 Qualitative and Quantitative aspects of colligative properties p 540 box, 13.6 worksheet - A closer look at electrolyte solutions; colloids (p554 box) Chemical Kinetics and Reaction Mechanism How and How Fast Reactions Occur 14.1 Intro to factors that influence reaction rates 14.2 Rate expressions of average rate and instantaneous rate P 581, 584 Intro to reaction mechanism and relationship to rate, RDS (p 597, ) LAB: Colligative Properties: Freezing Point Depression using Green Chemistry

6 CHM 152 Spring page 6 Week 5 Chemical Kinetics Mechanism (con t) 14.3 Rate laws and reaction order: dependence of rate on reactant concentrations at a given temperature 14.4 Integrated rate laws: dependence of reactant concentration on time at a given temperature; ½ life LAB: Kinetics: A Vitamin C Clock Reaction Week Why various factors influence reaction rate: Collision Theory and Transition State Theory p565, 14.5 Rate constant and dependence on temperature (p 581, 591) 14.6 A closer look at reaction mechanism: relationship of rates/rate laws elementary steps to overall reaction rate/rate law 14.7 How catalysts increase reaction rate LAB: Kinetics: Calculating Reaction Rate and Reaction Order of H 2O 2 Decomposition (dry lab) ************************** TEST 2 - MON or TUES, WEEK 7 (?) ************************** Week 7 The Basics of Chemical Equilibrium The Extent to Which Reactions Occur Chemical equilibrium conceptualized, relationship to reaction kinetics, Law of Mass Action (Law of Chemical Equilibrium) Writing Keq expressions, understanding the value of Keq, manipulating Keq when manipulating chemical equations Calculations with and applications of Keq LAB: Equilibrium: Game/Simulation to Introduce Chemical Equilibrium (dry lab) Week 8 Equilibrium (con t) Calculations with and applications of Keq (con t) 15.7 Disturbing a reaction at equilibrium and Le Châtelier s Principle Acid-Base Equilibria Definitions of acids and bases and conjugate pairs 4.3, 16.2 Relative strengths of acids, bases and their conjugates 4.3, , p690 Predicting products and net direction of acid-base rxns (p705) LAB: Equilibrium: Le Châtelier s Principle Week 9 Acid-Base Equilibria (con t) 16.9 Reaction of salts in water definitions/calculations of acidic, basic, neutral, ph, poh, pkw LAB: Open/Project ******************************* TEST 3 - FRIDAY, WEEK 9 (?) ******************************** SPRING BREAK NO CLASSES after week 9 (March 14-18)

7 CHM 152 Spring page 7 Week Acid-Base Equilibria (con t) acid and base dissociation constants 16.9 Revisit salts containing both a weak acid and weak base 16.10, Structural basis for acid/base strength p Percent ionization (p ) 16.5 Strong acid/base calculations LAB: Standardization of NaOH EASTER BREAK NO CLASSES Fri week 10 Mon week 11 (March 25 28) Week Weak acids/base calculations 17.1, 17.5, 17.4 worksheet: Common Ion Effect and ph; Solubility product constant 17.2 Buffers: what they are, how they work, and making them 17.2 Quantification of adding strong acids or bases to buffers 17.3 Acid- base titrations LAB wk 11: Determination of Ka of a Weak Acid using a ph-monitored Titration LAB wk 12: Part A: Buffers in the Body (dry lab); Part B: Designing and Making a Buffer (wet lab) ***************************** TEST 4 - MONDAY, WEEK 13 (?) ****************************** Week 13 Chemical Thermodynamics Why Processes Occur in a Particular Direction Overview Text intro and handout 19.1 spontaneous, nonspontaneous, reversible, irreversible 19.2 Second law of thermodynamics, alternate def. of spontaneous Entropy changes in chemical reactions review Enthalpy changes in chemical reactions 19.5 Origin of Free Energy term, relationship to S, H, & spontaneity 19.6 The temperature dependence of spontaneity Calculating free energy changes of chemical reactions LAB: Open/Project Week Relationship of G to spontaneity, equilibrium, and Keq Summary Three laws of thermodynamic & Fundamentals of Chemical Reactions Electrochemistry Review worksheet: oxidation states, half-rxns, balancing 20.3 Voltaic cells using redox reactions to perform electrical work 20.4 Cell EMF the driving force of voltaic cells 20.5 Using EMF to determine the spontaneity of a redox rxn 20.6 Concentration dependence of EMF and the Nerst Equation 20.7, 20.8, 20.9 Batteries, corrosion, and electrolysis LABS: Open/Project; Clean up and check out ***************************** TEST 5 - WEDNESDAY, WEEK 15 (?) **************************** Nuclear Chemistry Ch 21 (coverage to be announced) ******************************* COMPREHENSIVE FINAL EXAM******************************* WEDNESDAY, MAY 4, 9:00 AM or TUESDAY, MAY 3, 8:00 AM