MIME-Version: 1.0 Content-Type: multipart/related; boundary="----=_NextPart_01CAF385.3EE140F0" This document is a Single File Web Page, also known as a Web Archive file. If you are seeing this message, your browser or editor doesn't support Web Archive files. Please download a browser that supports Web Archive, such as Windows® Internet Explorer®. ------=_NextPart_01CAF385.3EE140F0 Content-Location: file:///C:/5409C650/Chem_51_Lab_Spring_2010.htm Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="us-ascii" Chemistry 51Lab

CHEMIS= TRY 51 LABORATORY

Ticket Number: 6527

8:50 – 12:00 P.M. Saturday  &nbs= p;            &= nbsp;           &nbs= p;            &= nbsp;           &nbs= p;            &= nbsp;           &nbs= p;            &= nbsp;         Room: INST-2012

 

Instru= ctor:............... Professor Charles M= allory

 

Email<= /span>:....................... charles.mallory@ieee.org

 

Web Address: ....... http://themalloryfamily.net/  Check this location often.  This location will contain handouts including the lab manual.

<= span style=3D'text-decoration:none'> 

Requir= ed Materials:

        &= nbsp;           &nbs= p;            &= nbsp; 

      &= nbsp;           &nbs= p;            &= nbsp;    F Everyday Chemistry Laboratory Manual by Maria Fenyes (Required NOW) (This is also available on= this website)

        &= nbsp;           &nbs= p;            &= nbsp;  F Periodic Table of the Elements (Attached to this syllabus= )

        &= nbsp;           &nbs= p;            &= nbsp;  F Scientific Calculator<= /span>

        &= nbsp;           &nbs= p;            &= nbsp;  F Safety Goggles (We have some for you to use.)

   &nb= sp;            =             &nb= sp;       F Lab Notebook, This is a quadrille paper, hard cover “Comp Book” (Required NOW)

&= nbsp;

Gradin= g:.................. Your laboratory grade is based upon the following breakdown:

 

      &= nbsp;           &nbs= p;            &= nbsp;           &nbs= p;            &= nbsp;   Laboratory Reports              50% (12.5% of total grade)

      &= nbsp;           &nbs= p;            &= nbsp;           &nbs= p;            &= nbsp;   Laboratory Notebook      = ;     10% (02.5% of total grade)

      &= nbsp;           &nbs= p;            &= nbsp;           &nbs= p;            &= nbsp;   First Laboratory Exam    &nbs= p;    10% (02.5% of total grade)

      &= nbsp;           &nbs= p;            &= nbsp;           &nbs= p;            &= nbsp;   Final Laboratory Exam    &nbs= p;   30% (07.5% of total grade)

 

Lab Reports:.......... Laboratory r= eports are due one week after the completion date of the experiment.  Late reports may be subject to a 2= 5% per class meeting late penalty.

 

Lab Exams:............ Two exams = will be given on the scheduled date only.  These laboratory exams will be closed book, closed notes with the on= ly resource being your laboratory notebook!&n= bsp; No makeup exams will be given.

 

Lab Notebook:...... The laboratory notebook will be collected and graded twice throughout the semester.  Anyone not having the laboratory notebook before the second day of class will be excluded from the laboratory.  All notes MUST be= taken down in the laboratory notebook.  You will write you data in the notebook and then transfer<= /b> the data to the laboratory notebooks.

 

Safety Goggles:..... During the experi= ments, unless specifically told by your instructor, you must ALWAYS wear safety goggles while in the laboratory.  Failure to wear safety goggles will dismiss you from the laboratory.=   You may purchase your own goggles = or you may use the ones provided in the laboratory.

 

Safety Rules:.......... Failure to f= ollow the safety rules will result in your dismissal from the laboratory.  Safety is the responsibility of all persons within the laboratory.  Make sure you read the Safety Rules and Regulations and follow all guidelines.<= /p>

 

Tentative Laboratory Schedule

 

Date=

Day<= o:p>

Exp.= #

Acti= vity

Feb 13, 2010

Saturday

No Class – Presidents Day

Feb 19, 2010

Friday

Last Day to Add Classes

Feb = 20, 2010

Satu= rday

N/A<= o:p>

Introduction to Lab; Safety Video, Check in

1

What Chemists Do; Identification & Analysis

Feb = 27, 2010

Satu= rday

2

Colorful Chemistry with Food Dyes

Mar = 5, 2010

Frid= ay

Last= Day to Drop classes, without a “W”

Mar = 6, 2010

Satu= rday

4

Separation of a Mixture of Sand & Salt

N/A<= o:p>

Periodic Table Video

Mar = 13, 2010

Satu= rday

5

Physical Properties of Household Liquids

Mar = 20, 2010

Satu= rday

Lab = Exam (You may use your lab notebook)

Lab = Notebooks due for grading

Mar = 27, 2010

Satu= rday

7

Specific Heat of a Liquid - Graphing with= Excel

Apr = 3, 2010

Satu= rday

NO C= lass - Spring Break

Apr = 10, 2010

Satu= rday

9

Percentage of Copper in Malachite

Apr = 17, 2010

Satu= rday

10

Combination & Decomposition Reactions

Apr = 24, 2010

Satu= rday

11

Single Replacement Reactions

May = 1, 2010

Satu= rday

12

Double Replacement Reactions

May = 7, 2010

Frid= ay

Last= Day to Drop classes, with a “W”

May = 8, 2010

Satu= rday

13

Table Salt from Baking Soda

May = 15, 2010

Satu= rday

15

Identification of Metal Ions

May = 22, 2010

Satu= rday

17

Molecular Shape & Polarity

May = 29, 2010

Satu= rday

3

Electrolytes & Nonelectrolytes

Jun = 5, 2010

Satu= rday

N/A<= o:p>

Chec= kout

Lab = Final Exam (You may use your lab notebook)

Lab Notebooks due for grading

 

 

Safety Rules and Regulations

Laboratory Safety is Not Just the Responsibility = of the Instructor.

It is the Responsibility of Everyone.<= /span>

 

While Working in the Laboratory,

You are expected to be Familiar with the Safety Rules

And to Conduct Your Laboratory Work in a Safe Manner at all times.

 

The Laboratory Instructor will review the following Safety rules and regulations with you and will point out the location and operation of the fire extinguisher, safety shower, eyewash, and other laboratory safety equipment available.

 

1.      While in the laboratory, you must wear approved safety goggles, wear shoes, confine long hair, and confine combustible clothing at all times.  You will be working with chemicals= that will stain clothing if you or your classmates are not careful, you may want= to invest in a lab jacket.

 

2.      You are not allowed to eat, drink, or smoke in the laboratory.

 

3.      Before begi= nning work in the laboratory you should be familiar with the procedures you will = be following as well as any special precautions or changes that the instructor= may note.  Report any unexpected e= vents to the instructor immediately.

 

4.      No unauthor= ized experiments may be performed.  Violators will be subject to disciplinary action.  Do NOT begin any experiment without the instruction in the classroom.

 

5.      Before leav= ing the chemistry laboratory, be sure to wash your hands carefully.<= /span>

 

6.      In the even= t of an accident, the laboratory instructor should be immediately notified.=

        &= nbsp; a.      If you rece= ive a chemical burn, immediately flood the area with cold water while another stu= dent summons the instructor.

        &= nbsp; b.      Treatment f= or injuries may be obtained only from qualified medical personal.

 
Laboratory Notebooks

(Note: Your Notebooks will be grad= ed using this criterion.)

General Directions

 

1.         = Always write in ink.  (NO PENCIL!)

2.         = Write only on the right-hand side of the page.&n= bsp; (The left-hand side of the page should be used for calculations, not= es, etc…)

3.         = Number all right –hand pages in the upper right-hand corner.

4.         = Just beneath the page number indicate the date on which the laboratory work was done.  When the experiment wor= k is done on two different dates, indicate the second date (right –hand margin) at the point where the second day’s work begins.

5.         = The laboratory notebook is an original permanent record.  This means several things:

        &= nbsp;   a        &= nbsp; You must write down all data directly (in ink) in the lab notebook.  There will be a grade penalty when= a student disregards this rule.  (The rule means:  no writing in pen= cil; no writing on the lab report sheet, on pieces of paper, etc…)

        &= nbsp;   b.         = There will be no erasures, no “white out”, and no missing pages.  One thin line may be used to cross= out offending material.  (Later yo= u may discover that you need this information and this way you can retrieve it!)<= o:p>

        &= nbsp;   c.         = Never Remove a Pager from the Laboratory Notebook.  (At some points this practice coul= d have legal implications; patent fights are won and lost on the legitimacy of lab notebooks.)  If you do make a dreadful error and would like to remove a page, do the following: draw a diagonal line across the entire page.

        &= nbsp;   d.         = Holes and spots from chemical spills are legitimate artifacts; do not worry about them.

 

Format= for the Laboratory Notebook

 

1.         = Leave one or two pages at the beginning for a Table of Contents.  On this, list each experiment titl= e (as you perform the experiment) and in a column at the right of the page, give = the page number where the experiment write-up starts.

 

2.         = Begin each experiment on a fresh right-hand page.  Each write-up includes:=

        &= nbsp;   a.         = Title:  At the top of the page give the ti= tle of the experiment.

        &= nbsp;   b.         = Page number and date:  At the t= op right-hand of each page.

        &= nbsp;   c.         = Purpose:  Describe what you are doing and why.  Describe what informatio= n you are attempting to gain by doing this experiment.

        &= nbsp;   d.         = Procedure: Give references to the location of the procedure in the text and any deviat= ions from the procedure in the text.

        &= nbsp;   e.         = Data: This includes all the observations, measurements, etc… that you make = in the laboratory.  The data shou= ld be presented in tabular form.  Ch= eck the report sheet to get ideas from the types of tables that are helpful for presenting data for that particular experiment.

        &= nbsp;   f.        &= nbsp; Results: These include all the things that you have calculated from the data.  Note:  results are not calculations, but = calculations based on data give results.

g.         = Discussion & Conclusions:  A short paragraph discussing the results of the experiment.  This section should answer the que= stions from the “Purpose” above.  This is the place to mention significant sources of error and the ef= fect they have on the results

 

Significant Figures

&nbs= p;

&nbs= p;

&nbs= p;

Example

Sig. Digi= ts

&nbs= p;

Sci-Notat= ion

1

All non-zero digits are significant

 

 

 

 

 

 

 

1.589

4

 

1.589E+00=

 

 

 

0.897

3

 

8.97E-01<= o:p>

 

 

 

36000

2

 

3.6E+04

 

 

 

&nbs= p;

&nbs= p;

 

 

2

Significant Zero's

 

 

 

 

 

a

All sandwiched zero's

13.02

4

 

1.302E+01=

 

&nbs= p;

 

1.0002

5

 

1.0002E+0= 0

 

&nbs= p;

 

10.5=

3

 

1.05E+01<= o:p>

 

&nbs= p;

 

 

 

 

 

 

b

All trailing zero's preceded by a digit

5.000

4

 

5.000E+00=

 

 

 

20.000

5

 

2.00000E+= 01

 

 

 

15.00

4

 

1.500E+01=

 

 

 

&nbs= p;

&nbs= p;

 

 

3

Non significant Zero's

 

 

 

 

 

a

Leading Zeros

0.0200

3

 

2.00E-02<= o:p>

 

&nbs= p;

 

0067=

2

 

6.7E+01

 

&nbs= p;

 

 

 

 

 

 

b

Trailing Zero's to the left of the decimal

56000

2

 

5.6E+04

 

 

point in a number without a decimal

1360=

3

 

1.36E+03<= o:p>

 

 

point

 

 

 

 

 

 

 

&nbs= p;

&nbs= p;

 

 

 

*NOTE: Write the numbers in exponential notation if you have any doubt.  All zeros used to

 

indicate the power of 10 (order of magnitude) are not significant.<= /span>

 

 

 
 
&nbs= p;

=  

=  

=  

=  

=  

=  

=  

=  

=  

=  

=  

=  

=  

=  

=  

=  

=  

=  

=  

=  

=  

=  

=  

=  

 

 


Rounding

1<= /span>

If the last digit to be retained in a number is followed by a number less th= an 5 (<5),

 

ROUND DOWN.

 

 

 

 

 

 

 

 

Round to 3 significant figures:

 

 

 

 

 

 

 

 

28.23

rounds to

28.2

 

 

 

 

 

 

578.1

rounds to

578

 

 

 

 

 

 

 

 

 

 

 

2<= /span>

If the last digit to be retained in a number is followed by a number greater than 5 (>5),

 

ROUND UP.

 

 

 

 

 

 

 

 

Round to 2 significant figures:

 

 

 

 

 

 

 

 

5.998

rounds to

6.0

 

 

 

 

 

 

0.00258<= /o:p>

rounds to

0.0026

 

 

 

 

 

 

3.6502

rounds to

3.7

 

 

 

 

 

 

 

 

 

 

 

3<= /span>

If the last digit to be retained in a number is followed by 5 (0000000…= ; implied),

 

ROUND the last dig= it retained to an EVEN NUMBER.

 

 

 

 

 

Round to 2 significant figures:

 

 

 

 

 

 

 

 

1.75

rounds to

1.8

 

 

 

 

 

 

1.050

rounds to

1.0

 

 

 

 

 

 

1.45

rounds to

1.4

 

 

 

 

Round to 4 significant figures:

 

 

 

 

 

 

 

 

67.835

rounds to

67.84

 

 

 

 

 

 

67.885

rounds to

67.88

 

 

Calculations

Uncertainty and Significant Figure= s

 

The Least Accurate Number (LAN) determines the number of digits to which the answer is expressed.

 

Addition and Subtraction

 

1.   &= nbsp;  The LAN is the number with the least number of digits following the decimal poi= nt.

2.      The answer = (sum or difference) can have no more digits following the d= ecimal point than the LAN.

 = ;

         = Example:

        &= nbsp;           &nbs= p;   What is the total mass of a mixture made by mixing the following substances?

 

   &nb= sp;            =             &nb= sp;            212        &= nbsp;    g water (LAN)

   &nb= sp;            =             &nb= sp;                 1.8         = g salt

   &nb= sp;            =             &nb= sp;                 1.88       g sug= ar

   &nb= sp;            =             &nb= sp;            ____________________

   &nb= sp;            =             &nb= sp;            215.98       g (incorrect)

   &nb= sp;            =             &nb= sp;            216        &= nbsp;    g (correct)

 

Multiplicatio= n and Division

=  

1.         = The LAN is the number with the least number of significant figures.<= /span>

2.         = The answer (product or quotient) can have no more significant fig= ures than the LAN.

=  

        &= nbsp;   Example:

Calculate the volume of a rectangular solid that has a length of 4.16 cm, a width of = 2.2 cm, and a height of 2.00 cm.

 

        &= nbsp;   Volume =3D Length x Width x Height

 

        &= nbsp;   Volume =3D (4.16cm) (2.2cm) (2.00cm)

        &= nbsp;           =             &nb= sp;             LAN

 

        &= nbsp;   Volume =3D 18.304 cm3 (incorrect)

 

        &= nbsp;   Volume =3D 18 cm3 (correct)

 

 

 

 

 

Hints for a successful Chemistry 51=

 

 

 

Chemistry 51 is a demanding course.  It demands much time = due to the sheer volume of work you must process for laboratory and lecture.  It demands much effort to understa= nd and learn the many new ideas presented in the course.  You can have a successful, even interesting semester if you practice some of the following hints.

 

 

 

Work on chemistry every day.  Do just two or three problems or r= ead just a few section of the current chapter.=   You will often need to try a problem several times before you fully understand it.  You will need = to read the text several times before you really know the material.=

 

 

YOU CANNOT CRAM CHEMISTRY! DON’T TRY!

 

 

Try to stay ahead of the lecture= .  Skim the anticipated lecture topic= the day before the class.  Then yo= u know what is in the book and need not take so many notes.  You then can LISTEN AND THINK DURING THE LECTURE.  CAREFULLY READ THE EXAMPLES AND SO= LVED PROBLEMS IN THE TEXT.  Cover t= he author’s solution and work them yourself immediately after reading the text.  Do the suggested end of chapter problems.  You cannot solve text problems and efficiently without LOTS OF PRACTI= CE.  If you cannot solve a suggested pr= oblem or don’t understand it, reread the appropriate section in the text and review your notes.  Look for a similar problem among the text’s examples.  Think about it for several days.  ASK FOR HELP to get started from y= our instructor or a fellow student.

 

 

Look for CONNECTIONS between the current lecture topic and previous topics or your prior knowledge of chemis= try or physics.  Look for practical applications of what you are learning.

 

 

Finally, DON’T PANIC! Take the course one step at a time and let y= our understanding grow.  You will = be amazed at how much materials you have assimilated by the end of the semeste= r.

 

P= eriod

       

Periodic Table<= /p>

 

 

 

1
IA
1A

 

18 VIIIA
8A

1

1<= /span><= br> H <= br> 1.008

2 IIA
2A

 

 

 

 

 

 

 

 

 

 

13 IIIA
3A

14 IVA
4A

15 VA
5A

16 VIA
6A

17 VIIA 
7A

2<= /span><= br> He
4.003

2

3<= /span><= br> Li
6.941

4<= /span><= br> Be <= br> 9.012

 

 

 

 

 

 

 

 

 

 

5<= /span><= br> B
10.81

6<= /span><= br> C
12.01

7<= /span>
N
14.01

8<= /span><= br> O
16.00

9<= /span><= br> F
19.00

10= <= br> Ne
20.18

3

11= <= br> Na <= br> 22.99

12= <= br> Mg <= br> 24.31

3 IIIB
3B

4 IVB
4B

5 VB
5B

6 VIB
6B

7
= VIIB
7B

8

9

10

11 IB
1B

12 IIB
2B

13= <= br> Al
26.98

14= <= br> Si
28.09

15=
P
30.97

16= <= br> S
32.07

17= <= br> Cl
35.45

18= <= br> Ar
39.95

------- VIII -------
------- 8 -------

4

19=
K
39.10

20= <= br> Ca
40.08

21= <= br> Sc
44.96

22= <= br> Ti
47.88

23= <= br> V
50.94

24
Cr
5= 2.00

25
Mn
5= 4.94

26= <= br> Fe
55.85

27= <= br> Co
58.47

28= <= br> Ni
58.69

29
Cu
6= 3.55

30= <= br> Zn
65.39

31= <= br> Ga
69.72

32= <= br> Ge
72.59

33=
As
74.92

34= <= br> Se
78.96

35= <= br> Br
79.90

36= <= br> Kr
83.80

5

37=
Rb
85.47

38= <= br> Sr
87.62

39=
Y
88.91

40= <= br> Zr
91.22

41= <= br> Nb
92.91

42= <= br> Mo
95.94

43= <= br> Tc
(98)

44= <= br> Ru
101.1

45= <= br> Rh
102.9

46= <= br> Pd
106.4

47= <= br> Ag
107.9

48= <= br> Cd
112.4

49= <= br> In
114.8

50= <= br> Sn
118.7

51=
Sb
121.8

52= <= br> Te
127.6

53= <= br> I
126.9

54= <= br> Xe
131.3

6

55= <= br> Cs
132.9

56= <= br> Ba
137.3

57= <= br> La*
138.9

72=
Hf
178.5

73= <= br> Ta
180.9

74= <= br> W
183.9

75= <= br> Re
186.2

76= <= br> Os
190.2

77= <= br> Ir
190.2

78= <= br> Pt
195.1

79= <= br> Au
197.0

80= <= br> Hg
200.5

81= <= br> Tl
204.4

82= <= br> Pb
207.2

83=
Bi
209.0

84= <= br> Po
(210)

85= <= br> At
(210)

86= <= br> Rn
(222)

7

87= <= br> Fr
(223)

88= <= br> Ra
(226)

89= <= br> Ac~
(227)

10= 4<= br> Rf
(257)

10= 5<= br> Db
(260)

10= 6<= br> Sg
(263)

10= 7<= br> Bh
(262)

10= 8<= br> Hs
(265)

10= 9<= br> Mt
(266)

 

 

 

 

 

 

 

 

 

 =

 =

 =

 =

 =

 =

 =

 =

 =

 =

 =

 =

  =

<= span style=3D'font-family:"Arial","sans-serif"'> 

 =

 =

 =

 =

 =

Lanthanide Series*=

58= <= br> Ce
140.1

59=
Pr
140.9

60= <= br> Nd
144.2

61=
Pm
(147)

62=
Sm
150.4

63=
Eu
152.0

64= <= br> Gd
157.3

65=
Tb
158.9

66= <= br> Dy
162.5

67= <= br> Ho
164.9

68=
Er
167.3

69=
Tm 1= 68.9

70=
Yb
173.0

71=
Lu
175.0

 

 

Actinide Series~

90=
Th
232.0

91=
Pa<= br> (231)

92= <= br> U
(238)

93= <= br> Np
(237)

94=
Pu<= br> (242)

95= <= br> Am
(243)

96= <= br> Cm
(247)

97=
Bk
(247)

98= <= br> Cf
(249)

99= <= br> Es
(254)

10= 0<= br> Fm
(253)

10= 1<= br> Md
(256)

10= 2
No
(254)

10= 3<= br> Lr
(257)

 

 

 

Code of Academic Honor and Integrity

Los Angeles Mission Co= llege

Departments of Physica= l and Life Sciences

= Students at Los Angeles Mission College, because they are members of an academic community dedicated to the achievement of excellence and the pursuit of hon= or, are expected to meet high standards of personal, ethical, and  professional conduct. These standa= rds require personal integrity and a commitment to honesty. Without the ability= to trust in these principles, an academic community and a civil society cannot exist. Los Angeles Mission College students and faculty are as committed to= the development of students with honesty and integrity as they are to the acade= mic and professional success of its students.

= The Academic Code of Honor and Integrity<= /b> is an undertaking of the students, both individually and collectively, that th= ey will:

1.   &= nbsp; Not give or receive unpermitted aid during exams, quizzes or assignments

2.   &= nbsp; Not give or receive unpermitted aid in assignments, reports or any other course work that is to be used by the instructor as a basis for grading.

3.  &n= bsp;  Do their share and take an active part in upholding the spirit and letter of t= he Code of Academic Honor and Integrity.

Some examples of conduct that are regarded as be= ing in violation of the Academic Honor Code include:

·         Copying from another’s examination or quiz, or allowing anoth= er to copy from one’s own papers

  • Using any unpermitted source of information, human or other, during an exam, quiz or assignment that influences the grade; this includes the use of technological devices
  • Any student-to-student collaboration that is unpermitted
  • Plagiarism= (plagiarism is defined as the use, without giving reasonable and appropriate credit to, or acknowledging = the author or source, of another person's original work)=
  • Representing as one’s own work as the work of another
  • Giving or receiving aid on an academic assignment under circumstances in which a reasonable person should have known that such aid is not permitted

As a part of the effor= t to promote and instill an environment of honesty and integrity during quizzes = and examinations, the following guidelines will apply for any courses in the Departments of Physical and Life Sciences:

1.   &= nbsp; Students will leave all books and all other non-essential items (e.g. paper, electro= nic devices) on the floor or inside their backpacks so that they are not useable nor blo= ck the sight line between professor and student. No electronic devices will be= in reach.

2.  &n= bsp;  Students will not communicate in any way that will dishonorably assist themselves or another student.

3.  &n= bsp;  Students will leave the room during an exam only if permitted by the professor’= ;s policy.  If permitted, only one student may leave the room at any time= and be gone for only the average length of time needed for the stated purpose.  Students will leave all purses, bags, books, phones, jackets, etc., in the classroom during the absence.

4.   &= nbsp; Students will promote the spirit and letter of the Code of Academic Honesty and Integr= ity by dissuading fellow students from dishonest activity and, when such casual persuasion does not work, informing the professor of the possible dishonest activity, either anonymously, or otherwise.

5.  &n= bsp;  Students will make every effort to avoid the appearance of dishonesty or lack of integrity

Violation of this policy will not be tolerated and violators will be subject to penalties. The success of the Code of Academic Honor and Integrit= y is based upon the collective desire of students, faculty and the community = to live in an environment that embraces respect for that which is right – both in the college and in society as a whole.

I have read and understand the Code of Academic Honor and Integrity and will abide by both its intent and its spirit:

 

 

Name (print) _____________________________ Signature ____________________________      Date ____________________

 

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