Spring Syllabus

[pic] [pic] Florida A&M University Department of Chemistry CHM 1045 Lab Syllabus COURSE SYLLABUS | |Course Number: CHM 1045L |Course Title: General Chemistry I Laboratory | |Prerequisite(s): | | |Co-requisite: CHM 1045 Lecture | | |Course Credit: 1 |Course Hours: 3 per week | |College: Science and Technology |Required Text(s): The laboratory manual, Experiments In General Chemistry, 6th | | |Edition by Peter Cottrell, Jesse Edwards, & Richard A. Ford, Jr. | |Department: Chemistry | | |Faculty Name: Arian White-Baker |Term and Year: Spring 2013 | | |Place and Time: 401/413 Jones Hall | |Office Location: |Telephone: ( 850 )599-8424 | |219-A Jones Hall |e-mail: arian1. white@famu. edu or arian1. white@gmail. com | |Office Hours |Monday |Tuesday |Wednesday |Thursday |Friday |Saturday | | |4:00-5:00 pm | 9:00-11:00 am | |12:00-2:00pm | | Curriculum Status: Required for Chemistry, Biology, Pre-Pharmacy and Pre-Engineering majors. INTRODUCTION General Chemistry I Laboratory (CHM 1045L) is the first course of a sequence of two laboratory courses primarily for students who are in science or science-related majors. In this laboratory course, students will have an opportunity to observe some of the phenomena of matter and obtain practical skills in using various items of laboratory equipment. Upon completion of this course students should have a deeper and more concrete understanding of the experimental science of chemistry.

There are 10 different laboratory exercises scheduled to be done during the weeks specified in the SCHEDULE section of this outline. Because of the large number of laboratory sections and the full use of time available during the semester, there will be no opportunity to make individual laboratory exercises. Only in cases of emergency, you must notify your instructor before the class session. In such case, the laboratory experiment should be made up during the week that it was assigned. In order to make up the experiment, these procedures should be followed: *Notify your instructor and get a note from them stating their approval and awareness of your absence. *Obtain an official excuse from your dean. Bring the excuse and the note to laboratory coordinators office in JONES HALL room 405. *At this time, you will receive a form with the time that you can make your experiment up. Appointments for office visits other than during scheduled office hours may be made on an individual basis for the mutual convenience of the students and instructor. LABORATORY OBJECTIVES There are several objectives of the laboratory course. Among these are to: a. Train students to observe and follow the standard safety practices while doing experiments. b. Provide a means for students to examine, analyze, and verify chemical principles by carrying out simple exercises in the laboratory. c.

Provide an opportunity for students to practice making careful observations and measurements, and to perform critical analyses of the observations made and data obtained. d. Train students to carry out laboratory exercises using standard techniques, while keeping a record of the observations made and data obtained. Academic Learning Compact As a result of your experience at FAMU chemistry students should be able to communicate chemical concepts in oral and written laboratory reports. Your reports should discern what you think happened from what indeed did occur based on sound chemical reasoning. You are to interpret laboratory data, measurements, procedures and results. Eventually, you should solve chemical problems and design and evaluate experiments.

After taking this class you will be able to recognize potentially hazardous substances and reactions. You should be able to make effective use of information resources and use a computer to gain information about chemical compounds and reactions. LABORATORY MATERIALS The following materials will be required for the laboratory: a. Laboratory safety glasses b. The laboratory manual, Experiments In General Chemistry, 6th Edition by Peter Cottrell, Jesse Edwards, & Richard A. Ford, Jr. , which is available at the University Bookstore. c. Laboratory coat d. Expt In General Chemistry Lab Safety & Techniques DVD Safety Students must always wear eye protection and laboratory coats when they are doing the laboratory exercises.

There are no exceptions to this requirement. Students not having eye protection and laboratory coat cannot remain in the laboratory. a. Wear approved eye protection at all times. b. Never eat, drink or smoke in a chemical laboratory c. If any glassware is broken, it should be cleaned up by the student. d. Never perform an unauthorized experiment. e. Never work in a chemical laboratory without proper supervision f. Never pipette by mouth or inhale gases or vapors g. Exercise proper care in heating or mixing chemicals h. Be careful with glass equipment PROCEUDURE Each laboratory experiment must be read and carefully studied before coming to the laboratory.

This must be done to ensure that each student is thoroughly familiar with the principles, procedures, calculations, and anything else with the exercises may be involved. Unless otherwise directed to do so, students should work alone in doing in the laboratory exercises. Take extreme care when using the analytical balances, thermometers, and other items of equipment that are expensive and/or may be easily broken. When the laboratory exercise is completed, all equipment should be cleaned and put in its proper place or in the locker in an orderly way. The bench top and common work areas should also be cleaned. LABORATORY REPORTS The pre-laboratory assignments of each laboratory experiment must be turned in to the instructor before the beginning of the laboratory.

Laboratory Reports are to be completed and turned in as directed by the instructor. The laboratory report will usually consist of the Pre-Lab, Post-Lab, Lab Write-up, Data Sheet from the laboratory experiment and calculations sheet. Laboratory Report Organization: All sections should be typed except calculations, pre/post lab and your data/report sheet • Title Page: Your name, Group members names, Date, Lab section Title of the Experiment • Introduction- 5-6 sentences at most • Materials and Procedure- Past Tense, Bullet format • Pre-Lab, Report Sheet and Post Lab –please complete all calculations and questions in the spaces provided. If the space is too small, please complete on a separate sheet of paper. Calculation sheet – SHOW ALL WORK! • Conclusion – Discuss what you learned and any possible sources of error that occurred in the experiment. Please use complete sentences. Students who do not actively participate in the laboratory experiment will be subject to point reduction. there are no make up labs, so do not miss a lab date. Late lab reports will not be graded. No exceptions will be granted and no excuses are acceptable. PUBLIC HOLIDAYS AND LABS IF YOUR LAB FALLS ON ANY PUBLIC HOLIDAY (EXCEPT THANKSGIVING WEEK) OR UNIVERSITY CONVOCATION, PLEASE ENDEVOR TO ATTEND ANY OTHER SECTION OF THE LAB WITHIN THE SAME WEEK. THE MISSED LAB WILL NOT BE REPEATED THE FOLLOWING WEEK.

PLEASE ENSURE THAT THE LAB INSTRUCTOR OF THE LAB YOU ATTENDED FOR MAKEUP SIGNS YOUR WORK AS EVIDENCE OF ATTENDANCE. THEN SUBMIT YOUR LAB REPORT TO YOUR LAB INSTRUCTOR AS USUAL. The total score for the course will be based on laboratory reports, write up, and exam. Each laboratory report will have equal value but not necessarily the same number of points. The laboratory reports will count between 80-90% of the total score. The final laboratory examination will count between 10-20% of the total score. Additionally, you may be given quizzes that will count toward your overall grad. The various parts of the lab exercises and reports will contribute towards the final grade as follows: Lab Reports Report Sheet and Data 50

Pre-Lab 10 Post Lab 10 Write up 30 Total 100 There will be a total of Ten Labs and Two Exams worth 100 pts each. At the end of the semester, an overall fractional score will be calculated. It is anticipated that the grade will be based on the following scale for fractional scores: A- (90% or above)(990-1110) B-(80-90%)(880-989) C-(70-80%)(770-879) D-(60-70%)(660-769) F- (Below 60%)(659 & Below) Some general items to be considered in grading the reports will be the neatness and legibility of the report, the correct use of English, and the proper use of significant figures and units.

Other items that may be considered, depending on the specific exercise, will be the closeness of a result obtained to what the result should be the correctness of any calculations, and the completeness of any observations that may be expected. A subjective evaluation will also be included of the student’s attitude toward the laboratory exercised and the correct use of the laboratory equipment. Academic Calendar: Fall 2013 January 7 Classes begin (Full-Time Studies) January 21 Martin Luther King (Holiday) March 11-15 Spring Break March 29 Last day to withdraw April 26 Last day to submit I change of grade Aptil 26 Last day of classes April 29-May 3, 2013 Final examinations Week CHM 1045 Labs Spring 2013

Lab # Date Title Page # 1/7-12/12 Laboratory Orientation and Safety Video/ MSDS 1. 1//14-18/12 Basic Laboratory Technique 1 No Labs 1/21-25/12 Martin Luther King – No Class This Week 2. 1/28 – 2/1/12 Identification of Substances by physical properties 13 3. 2/4-8/12 Separation of the Components of a mixture 23 4. 2/11-15/12 Chemical reactions of copper and percent yield 31 5. /18-22/12 The stoichiometry of a reaction 39 2/25-3/1/12 Exam #1 6. 3/4 – 8/12 Reactions in Aqueous Solutions 49 No Labs 3/11-15/12 Spring Break- No Class This week 7. 3/18-22/12 Qualitative-Analysis Scheme 61 8. 3/25-29/12 Colorimetric determination of iron 69 9. 4/1-5/12 Behavior of gases: Molar mass 93 10. 4/8-12/12 Where are electrons? : VSEPR 245 4/15-19/12 Exam 2 SAMPLE LAB WRITE UP: Cover Page EXPERIMENT 1

BASIC LABORATORY TECHNIQUES John Doe Group Members: Andrew Luck Reggie Wayne Dwight Freeney SAMPLE LAB WRITE UP INTRODUCTION Chemistry is an experimental science that relies heavily upon meticulous observations and precise measurements. When recording the measurements made, the accuracy of the devise used has to be reflected. Although the metric system used here in America is the most common, scientists prefer the use the International System of Units or SI system. The objective of this lab is to perfect the use of the laboratory balance, graduate cylinder, thermometer and pipets in order to learn how to obtain accurate measurements in experimental procedures.

This lab will also allow familiarization with the SI units used in scientific work. APPARATUS/MATERIALS Balance150-mL Beaker 250-mL Beaker Bunsen Burner Hose clampFlask 125-mL 50-mL Erlenmeyer Grad. Cylinder Rubber BulbIron ringRing Stand 10-mL Pipet ThermometerWing TipIce Barometer PROCEDURE A. The Bunsen Burner • The Bunsen burner was examined for valves and all gas/air outlets • Both valves were closed and rubber tubing was attached from the gas outlet on the burner to the lab bench spout. • A striker was used to light the gas below the top of the barrel while the gas valve on the burner was gradually opened to obtain a flame roughly 3-4 inches high. The air was adjusted to allow a pale blue flame to form on the inner cone. B. The GraduatedCylinder • The 100-mL graduated cylinder was examined and the markings in milliliters was noted • The cylinder was then filled approximately half full with water and the meniscus(curved surface) was observed. • Reading the lowest point of the meniscus at eye level with the cylinder a volume measurement was obtained to the nearest 0. 1mL and recorded • A 125-mL Erlenmeyer flask was then filled to the top with water and the graduate cylinder was used to aid in recording the total volume in the flask. C. The Thermometer and Its Calibration To test the accuracy of the thermometer, it was calibrated using known measurements • 50mL of ice was placed in a 250mL beaker and covered with distilled water. • The ice-water mixture was allowed to set and come to equilibrium and measurements were taken and recorded. • To test the boiling point, a 250-mL beaker ws set on a wire gause and iron ring half full with distilled water. • The water was heated and measurements were periodically taken to determine the temperature of the water . • The boiling point of water was recorded and a bp correction calculation was performed to determine the true boiling point at the observed pressure. D. Using the Balance to Calibrate the 10-mL Pipet • A penny was weighed and the mass recorded About 40mL of distilled water was put in a 50-mL beaker • The weight of an empty, dry 50 mL Erlenmeyer flask was weighted to the nearest 0. 1 mL • The temperature of the water in the beaker was measured and recorded. • Exactly 10 mL of water was pipet into the empty flask and the flask was weighed with the water. • The weight of the water was determined by subtraction the mass of the empty flask from the mass obtained after the 10 mL of water was added. • The density was calculated, and based on the temperature obtained previously, the accuracy of the pipet was determined. • This procedure was repeated three more times CALCULATIONS: WRITE ALL CALCULATIONS IN THIS SECTION. NO NEED TO TYPE THEM OUT.

CONCLUSION: The objective of this lab was to learn the use of simple lab equipment. In this experiment our group was able to learn basic laboratory protocols and become familiar with common equipment operation. We were able to successfully calibrate and standardize the equipment for future measurements to be taken. Overall there were minor errors that could have occurred including the following: not reading the bottom of the meniscus on the graduated cylinder procedure and dropping some water while transferring to flasks in procedure D. We completed all procedures proficiently otherwise and look forward to a semester of future experimentation.

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