Chemistry  141  

Professor  James  F  Harrison    harrison@chemistry.msu.edu  

Office  Hours      

1:30-­‐2:30  pm  MWF  Room  37    

Chemistry  Basement  

CEM  141  Grade  Summary  -­‐  FALL  2013  

GRADE # of Students % of Students

4.0 446 22.1%

3.5 299 14.8%

3.0 314 15.5%

2.5 273 13.5%

2.0 202 10.0%

1.5 170 8.42%

1.0 116 5.74%

0.0 (with final) 140 6.93%

0.0 (no final) 57 2.82%

75.9%  of  the  students  in  the  fall  earned  a  grade  of  2.0  or  higher!  

Course  Structure  

Lectures  MWF  3:00  –  3:50  pm  room  138  

RecitaOon  once  a  week  Room  and  Ome  depends  on  your  secOon  

If  you  are  in  this  lecture  you  are  in  a  secOon    between  29  and  42  

RecitaOons  Weekly  

 Staffed  by  a  Teaching  Assistant  (TA)  

 Opportunity  to  ask  quesOons  and  discuss  the  lecture  material  

 Will  start  Tuesday  ,  September  2  

 You  will  receive  credit  for  problem  sets  a_empted  in  recitaOon    

 There  will  be  13  sets  but  only  10  will  be  counted    

and  each  of  those  will  be  worth  5  points    

Maximum  50  points      

Help Room

Help with the material covered in CEM

141 is available in the Help Room

(Room 83 in the basement)

Staffed by TA’s

Free tutoring

is available at the Learning Resource Center

in Bessey Hall

and in several residence halls on campus

LRC.msu.edu  

Mock  exams  

Useful  InformaOon  

General  Chemistry  Office    

General  informaOon  and  assistance    Room  185  M-­‐F  8-­‐12  noon  and  1-­‐5  pm  

Telephone  5-­‐9715  ext  323  General  Chemistry  Coordinator      Mrs.  Wendy  Whibord  

Undergraduate  Program  Manager        Dr.  Steve  Poulios  

Textbook    

Lecture  Notes    

Old  ExaminaOons    

Physical  Resources  

Textbook  

Volume  1    of  Chemistry  by  Hunter  &  Pollock    

Chemistry  141  Lecture  Notes    By  P.  Hunter  

Previous Examinations

A book of examinations given previously in CEM 141 is available for $20 from the

General Chemistry Office (room 185 Chemistry) or from bookstores in town.

The book contains all of the exams, and solutions to the exams, given in the last five years.

This  is  the  best  purchase  you  can  make  

Electronic  Resources  

Web  Site    

Cemscores    

OWL@  

CEM  141  web  site    

h_p://www.chemistry.msu.edu      

Go  to  Courses  (  upper  right)    

 then      

General  Chemistry  Courses    

 then      

CEM  141  

cemscores    

You  will  be  able  to  view  your  points  for  the    various  exams,    homework    

and    recitaOon  work  

 

More  on  this  later  

Homework  assignments  will  be  administered  by        OWL@  system  

You  must  purchase  an  OWL  access  code  

CEM 141 Sections 01 - 56 Fall 2014 We’ll be using OWL (Online Web Learning) as our online homework system this semester. You will need to use OWL in order to get credit for your homework. Here are your directions to get access:

1. Purchase your OWL access code. There are several ways to get the access code: a) Purchased separately or bundled with the Atwood Survival Guide for General Chemistry from local

bookstores b) Purchased from CengageBrain website:

24-month access for $50: http://www.cengagebrain.com/micro/1-1PLTZJB 6-month access for $42: http://www.cengagebrain.com/micro/1-1PLU45F

!2. Open a web browser on your computer and go to www.cengage.com/owl 3. Choose General Chemistry It is recommended that

and choose Register you do NOT click here to purchase an access code. It is cheaper and quicker to purchase one as described in step #1 above.

4. Choose:

Chemistry &Chemical Reactivity, 8th Edition; Kotz, Treichel, Townsend

ISBN 0-840-04828-9 (5th book from the top) Note that this is not the same text that is used to accompany lecture!

5. Choose: Michigan State University - East Lansing, Michigan

6. Click on the blue arrow under Student Registration

7. Choose the blue arrow next to Chemistry 141 Fall 2014.

Enter your information into the Self-Registration form. Your Student Number is your MSU PID. Enter your PID as the letter A followed by 8 digits (no spaces). Type your access code into the Access Code space and press Continue.

!Once you reach the “Student Registration: Successful Registration” page, click on the Login Page link at the top. Bookmark this login page and use it whenever you visit OWL. Use the Login and Password you created during registering.

Homework  assignments  will  be  administered  by        OWL@  system  

First  OWL  homework  opened  this  morning  and  is  due    by  8:00am    Saturday  September  6  

OWL  homework  opens  on  Wednesday  at  8:00am    and  is  due  10  days  la_er  on  a  Saturday  at  8:00am  

 Homework  (OWL)  

Eleven  homework  assignments  will  be  issued  this  term  

There  are  no  make  up  or  extensions  offered  for  missed  problem  sets.  

You  are  encouraged  to  work  together  But  you  are  responsible  for  compleOng  your  own  set  by    

Saturday  morning  at  8:00  am  Due  dates  are  listed  on  the  course  calendar  

You  may  earn  160  points  or  16%  of  the  total  points  available  

You  have  an  unlimited  number  of  try’s    on  each  quesOon  

Examinations

Three one hour exams Monday evenings 6:45-7:45 pm

If for some reason you cannot take the evening

exam you may take an alternate exam at 6:45 am on the same day as the evening exam

There will not be any makeup exams

Final  Exam  

There  will  be  a  2  hour  final  examinaOon    scheduled  from  7:45  –  9:45  am  on    

Tuesday  December  9  

If  you  miss  the  final  exam    you  will  receive  a  zero  for  the  course  

Absence from an exam due to illness must be substantiated by a physician. Absence due to

extenuating circumstances must be preapproved.

If you miss one hourly exam you will receive a

grade for that exam equal to the arithmetic average of the two remaining hourly exams or

the final, whichever is lowest. If you miss more than one hourly exam you will

receive a grade of zero for that exam.

Points 3 hourly exams (180 each) 540 1 final exam 250 11 problem sets (OWL) 160 10 recitation problems 50 Total points 1000

Grades

1000-800 4.0 799-740 3.5 739-680 3.0 679-620 2.5 619-560 2.0 559-500 1.5 499-440 1.0 439-0 0.0

Scale is fixed and will not be curved

exam   date   :me  1   September  22   6:45-­‐7:45  pm  

2   October  20   6:45-­‐7:45  pm  

3   November  17   6:45-­‐7:45  pm  

final   December  9   7:45-­‐9:45  am  

ExaminaOon  Schedule  

General  Chemistry  Awards  

Three  awards  will  be  given    to  the  top  three  students  in  CEM141  

First  award  $500  

Second  award  $300  

Third  award  $200  

www2.chemistry.msu.edu/courses/cem141jo  

Most  of  the  power  point  slides    from  my  lectures  will  be  available  at    

The  best  way  to  contact  me  is  by  email    and  the  best  address  is    

harrison@chemistry.msu.edu  

Please  use  cem141  in  the  subject  line  

CEM  161  will  not  meet  unOl    Tuesday  September  2  

Lecture  Notes  1  

Units  of  measurements,  calculaOons  

When  we  report  a  measurement  we  report    Number  Unit  

 

Units  of  Measurements    

ReporOng  the  measurement  of  a  quanOty    without  giving  its  unit  is  meaningless  

 

For  example  saying  that  the  length  of  a  race  is  3  means  nothing    without  the  associated  unit,  say  km  or  miles  

There  are  many  different  units  for  the  same  property    

Length  could  be  angstroms,  cenOmeters,  meters,    inches,  feet,  miles,  light  years,  etc  

mass   kilogram   kg  

length   meter   m  

Ome   second   s  

temperature    Kelvin   K  

amount   mole   mol  

current   ampere   A    

SI  units  

EssenOally  all  science  and  engineering  use  the  System  InternaOonal  or  SI  system  

Base  SI  Units      Quan:ty    unit            symbol  Mass        kilogram            kg  Length      meter              m  Time        second              s  Temperature  degree              K  Amount              mole                    mol  Current      ampere              A    

Common  derived  units:  

velocity = length / time = m s−1

acceleration = velocity / time = ms−2

force = mass x acceleration = kg m s−2 = Newton ≡ N

Energy = Force x distance = Nm = kg m2 s-2 = Joule ≡ J

pressure = force / area = N /m2 = kg m-1 s-2 = Pascal = Pa

frequency = 1 / time = s-1 = Hertz = Hz

Oqen  powers  of  10  are  represented  by  a  prefix  

prefix   Value  pico    (p)   10-­‐12  

micro  (μ)   10-­‐6  

milli  (m)   10-­‐3  

kilo    (k)   103  

mega    (M)   106  

7.0  picometers       7.0pm   7.0  x  10-­‐12  m  

8.6  micrometers   8.6μm   8.6  x  10-­‐6  m  

12.6  kilometers   12.6km   12.6  x  103  m  

Significant  figures  

How  many  significant  figures  are  in  a  number?    

1. If  there  is  a  decimal  point  in  the  number,      draw  an  arrow  from  leq  to  right  unOl  you    come  to  the  first  non-­‐zero  digit.  All  digits    you  did  not  draw  through  are  significant.  

7532.03  

0.004830  

6  significant  figures  

4  significant  figures  

2.  If  there  is  no  decimal  point  in  the  number    draw  an  arrow  from  right  to  leq  unOl  you  come  to  the  first  nonzero  digit.  All  digits  you  did  not  draw  through  

are  significant.    However  this  is  the  minimum  number  of  significant  figures  in  the  number.  You  cant  tell  about  the  zeros  unless  the  number  is  wri_en  in  

scienOfic  notaOon.  

97300   At  least  3  significant  figures    Perhaps  5  

ScienOfic  NotaOon  

Represent  numbers  as  a  number    between  1.000…  and  9.999…    mulOplied  by  a  power  of  10.  

63.51  

0.0271  

10068  

 =        6.351  x  10  

=        2.71  x  10-­‐2  

=      1.0068  x  104  

7.23     =  7.23  

Return  to  97300  

9.7300  x  104         5  significant  figures  

9.730  x  104   4  significant  figures  

9.73  x  104     3  significant  figures