CHY 115 General Chemistry IL aboratory

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CHY 115 General Chemistry IL aboratory Powered By Docstoc
					                                 The University of Maine at Augusta


                            CHY 116 General Chemistry II Laboratory
                                     Syllabus, Spring 2012


Instructor: Susan O. Baker, Associate Professor of Science
Office: 290 Jewett Hall
Phone: 621-3285; 1-877-UMA-1234 ext. 3285 (toll free)
Email: sbak@maine.edu

LABORATORY DESCRIPTION
CHY 116 laboratory is designed to illustrate and reinforce principles and concepts covered in CHY
116, General Chemistry II lecture as well as provide time for covering additional course related
content. In addition the laboratory experience provides students experience in collecting and
analyzing data, writing laboratory reports, and utilizing reference materials. Throughout the course
there is an emphasis on laboratory safety and proper laboratory techniques.

Course Website: http://faculty.uma.edu/SBaker/chy116.htm

REQUIRED TEXT AND MATERIALS:

   Standard and Microscale Experiments for General Chemistry, 5th ed. by Bishop, Bishop, and
    Whitten
   Laboratory Notebook (must be bound with carbonless copies)
   Periodic Table of the Elements by Sargent Welch
   Scientific Calculator
   Approved safety goggles and white laboratory coat

COURSE OBJECTIVES:
In addition to illustrating the learning objectives associated with the lecture component of the course,
the laboratory meets the following objectives, students will:
     Learn how chemists keep records in the laboratory by keeping a laboratory notebook.
     Develop critical thinking skills by evaluating the quality of experimental data, identifying
        sources of error, and recommending revised procedures.
     Develop and demonstrate proper laboratory techniques.
     Demonstrate proper use of laboratory equipment.
     Demonstrate knowledge of laboratory safety and laboratory policies as found in the Chemical
        Hygiene Plan.
     Be able to use reference materials to locate health and safety information about chemicals.
     State the location of the MSDS notebook, locate MSDS online, and demonstrate an
        understanding of the information found in a MSDS.
     Know the location of laboratory safety equipment and describe appropriate use of each safety
        device (to include ventilation hoods, eye wash, shower, fire extinguisher, fire blanket, spill
        kit, emergency procedures).
                               The University of Maine at Augusta


GENERAL LABORATORY POLICIES
 Smoking is prohibited in the laboratory and in all of Jewett Hall.
 Eating and drinking are prohibited in the lab. This includes gum, throat lozenges and chewing on
  pencils!
 NEVER taste or deeply inhale any chemical, even if instructed to by the lab manual.
 NEVER mouth pipette, always use a pipette bulb.
 Shoes that are open toed, high heeled, or slippery soled are prohibited (no sandals).
 Legs must be covered at all times (pants recommended).
 Eye protection is required at all times in the laboratory.
 Additional laboratory policies can be found in the Chemical Hygiene Plan.
 Additional safety guidelines can be found in the lab manual’s safety introduction.

Attendance: Students are expected to attend all laboratory sessions. Due to the hands-on nature of
the lab, missed experiments cannot be made up.

GRADING: The laboratory grade will be determined from the following:

       45% Assigned Laboratory Questions, Laboratory Reports
       45 % Quizzes
       10 % Chemical Reference Data Forms

      Each week you are required to submit the lab report and assigned questions from the
       prior week’s lab AND the Chemical Reference Data Forms for the lab scheduled for
       that day.
      The laboratory notebook/reports must follow the assigned format for full credit.
      All quizzes will be announced at least one week in advance. Quizzes will test your
       understanding of the experiments as well as your knowledge of lab techniques, safety and the
       chemicals used.
                                The University of Maine at Augusta


Chemical Reference Data Forms - For each assigned chemical (see lab schedule for assigned
chemicals) a Chemical Reference Data Form needs to be completed. Forms are available on the
Chemistry home page. Each form includes the following information:

      Chemical Number – from master list of required chemicals as posted on the website
      Chemical Name and any common names
      Chemical Formula
      Molecular/formula weight in grams/mole
      Type of substance: element, ionic compound, molecular compound, or solution
      Physical Properties
        physical state, color, density (or specific gravity), melting point (for solids), boiling point
          (at 760 mm Hg for liquids), solubility
      Flammable? Y/N
      Safety/Health/Toxicity Issues (these should be summarized and not quoted directly from the
       source)
      Other
      Reference(s) used to complete form

                               THE LABORATORY NOTEBOOK

Why keep a laboratory notebook?
"A laboratory notebook is one of a scientist’s most valuable tools. It contains the permanent written
record of the researcher’s mental and physical activities for experiment and observation, to the
ultimate understanding of physical phenomena. The act of writing in the notebook causes the
scientist to stop and think about what is being done in the laboratory. It is in this way an essential
part of doing good science." (Writing the Laboratory Notebook by Howard M. Kanare; American
Chemical Society, 1985)
FORMAT FOR THE LABORATORY NOTEBOOK
   All entries must be written in pen. Mistakes should be crossed out neatly.
   The first page of the notebook is a title page which states the course, semester, institution,
    and your name. This is followed by a table of contents which lists the title of each laboratory
    and the page the laboratory entries begin for this experiment.

1. Lab Title and date of experiment

2. Purpose of the experiment.

3. Materials List: List all chemicals to be used in the experiment and equipment needed.

4. Procedure - The format for the procedure section depends upon the nature of the experiment.
    If the procedure in the lab manual is followed closely then a summary paragraph should be
      written that gives an overview of the procedure, refers to the appropriate pages in the lab
      manual comments, and states any changes made to the stated procedure. A labeled sketch of
      the apparatus should be included.
                               The University of Maine at Augusta


      The procedure section gives detailed, yet succinct directions. The directions should be clear
       yet not include unnecessary detail. Each procedural step should be numbered and begin on a
       separate line. (sample procedures are available). There should be enough information that a
       classmate who missed lab would be able to conduct the lab from your procedure.
      Personal pronouns (I, we…) may not be used when writing the procedure section.

5. Data
    This section includes all of the data recorded during the experiment presented in an organized
      format. Well labeled charts are required for most laboratories.
    All data entries should be expressed with the appropriate number of significant figures and
      include units.
    Answers to calculations are often included as data entries. For example, if you are
      determining the volume of wood block you would include in your data chart both the
      dimensions of the wood block and the calculated volume.
    All data entries should be made during lab.

6. Sample Calculations
    Show sample calculations for all but simple calculations (e.g. addition, subtraction, and
      averaging.) Calculations should be clearly labeled and all values should include the
      appropriate units. (Not all labs will involve calculations.)

7. Chemical Reactions
    For labs involving chemical reactions, write a balanced chemical equation for all reactions
      observed in the lab.

8. Results
    In this section you should demonstrate an understanding of the experiment and your findings.
    In the first paragraph summarize what was determined during the experiment. Explain the
      basis for these conclusions.
    Discuss known or likely sources of error and the impact of these errors on the data collected
      and the conclusions drawn from this data. When called for, address procedure modifications
      that would improve the experiment.
                             The University of Maine at Augusta




                              CHY 116 General Chemistry II
                              Tentative Laboratory Schedule
                                       Spring 2010



Date       Laboratory Topic and Assigned       Chemical Reference Data                 Comments
                    Questions                  Forms Due Today

W: 1/11    NEW STUDENTS ONLY:                  NEW STUDENTS ONLY:
TH: 1/12   Introduction to the Lab and         Chemical Reference Data
           Laboratory Safety                   Forms – watch video and
                                               complete forms for:
           Read: Lab Manual: 29-31               Sodium Hydroxide
                                                 Ethanol
                                               Submit forms at the next lab
W: 1/18    Hydrogen Spectrum – Handout         N/A
TH: 1/19   Answer all questions on lab
           handout
W: 1/25    EX 16: Relative Reactivity of       Hydrochloric Acid, silver
TH: 1/26   Metals and the Activity Series      nitrate, lead (II) nitrate, lead,
               Questions 1-5 on pages         copper, tin
                  209/210
               NOTE: The first sentence
                  of question 5b should end
                  after the words “hydrogen
                  gas”.

W: 2/1     EX 14: Molecular Models – this       Sucrose                            *The hybridization
TH: 2/2    lab does not need to be in your lab                                     aspects will likely
           notebook                                                                be added on 2/8 &
                Questions 1,3,4 on pages                                          2/9
                  185/186
                Turn-in pages 187 – 192
                  with the following filled in:
                  Lewis structure (dot
                  formula), electronic
                  geometry, molecular
                  geometry, polarity, and
                  hybridization*

W: 2/8     CH 10 Liquids and Solids -
TH: 2/9    Lecture
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W: 2/15     Distillation (handout)             Acetone
TH: 2/16    Questions on handout               Methyl alcohol
                                               Ethyl alcohol
                                               Cyclohexane

                                         Break Week
   Attend or Volunteer to Help (arrive at 11:30 am) at the 16th Annual Science Fair for Kids
                               Tuesday, 2/21, 12:30 – 4:00 pm

W: 2/29     EX 21: The Molecular Weight of     Benzophenone
TH: 3/1     a Compound by Freezing Point
            Depression
                Questions 2-6 on pages
                  255/256, 1-3 on page 258

W: 3/7      Take Home Lab Test – due 3/14                              S. Baker in Gulfport,
TH: 3/8     & 3/15                                                     MS
No in-
class lab

W: 3/14     Lab meets – Lab TBD
TH: 3/15    Lab Test Due

W: 3/21     EX 30: Rates of a Chemical         Potassium iodate        --Rather than drops, use
TH: 3/22    Reaction, A, B                     Sodium bisulfite        a pipet to measure 1.00
             Questions: 3 on page 382, 2,3                            mL for each 10 drops.
               on page 393                                             -- Conduct the
                                                                       experiment in 50 ml
                                                                       flasks or beakers.
                                                                       -- Mathematical analysis
                                                                       of data will differ from
                                                                       that presented in the lab
                                                                       manual. Analysis will
                                                                       be consistent with that
                                                                       presented in lecture/text.
                             The University of Maine at Augusta


W: 3/28                                                                  .
TH: 3/29   No Lab – Break Week

W: 4/4     EX 32: Spectrophotometric            Potassium thiocyanate, Lab report is due upon
TH: 4/5    Determination of an Equilibrium      nitric acid (dilute       completion of Parts A,
           Constant, parts A, B                 solution), ferric nitrate B, and C – 4/18,19
                                                (iron (III) nitrate)
W: 4/11    EX 32: Spectrophotometric
TH: 4/12   Determination of an Equilibrium
           Constant, part C
            Questions 1-4 on pages 421,
              422 (I expect questions on 1b).

W: 4/18    Lecture on CH 14: Acids and
TH: 4/19   Bases


W: 4/25    EX 35: Determination of Ka from      Acetic acid
TH: 4/26   Measurements of pH – use             Sodium Hydroxide
           procedure posted on the website      Phenolphthalein
           for this experiment
            Questions 2-4 on pages
               461/462

W: 5/2     Open Book Lab Exam
TH: 5/3

				
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