CHEM 1450 Daily Outline

email Desrochers
Wed Dec 11  2:00 - 4: 00 pm  Comprehensive Final Exam      key     91 <68> 45    final exam review sheet

Final exams are yours to have once they are graded.  You know they are graded when you see your score appear in Bb.
FYI   the final in fact had only 190 points.  So to calculate your percentage, you'll need to divided your score in Bb by 190.

Just in time for Christmas: color changing cookies
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Tue Dec 10   office hours (MAN 303B)
     10 - 11 am     4 - 5 pm

Mon Dec 9  office hours (MAN 303B)
    10 - 11 am    1 - 2 pm
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If you have not done so already, return your graded thermodynamics
lab to me. I made a mistake in grading.  Nearly everyone will get points
back, but I need to see it.  Please get that to me not later than Wed
final.
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Fri Dec 6    No 9 am class today

Office hours today are drop in (come to my office as needed).

9-10 am not available (have a meeting)
2-4 pm not available (another meeting)
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Practice for Ch 9 and 10

Use the Self Assessment quizzes as practice exams.  Work them with a timer, by yourself.
Work after with your classmates to check your answers.

p 418-419   (omit Q 5) allow 25 min for these
p 469-470  (omit Q's 11, 13)   allow 25 min for these
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Wed Dec 4, Thu Dec 5  LAB =  H2O2 decomposition (available on the lab downloads page)

Wed Dec 4
KMT   gas velocities    avg KE proportional to T     some slides for today
    1. T dependence  
    2. mass dependence
Real vs ideal gases

WORK remaining Ch 10 as assigned on the syllabus
READ  Sec 10.10  and 10.11
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Mon Dec 2
Gas mixtures    slides for today
Partial pressures
Mole fraction

My corrected work for the N2 + F2 example    (a number someone gave me was wrong in class)

WORK Ch 10: 16, 19, 62-77,  132, 139
READ  Sec 10.10
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Wed Nov 27, Fri Nov 29   Thanksgiving Break!
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Mon Nov 25
Quiz 10   key    Hess's law and delHformation
Pressure and gases     bring these slides to lecture
atm, torr
PV = nRT and using it

READ:  Sec 10.1 - 10.8
WORK Ch 10: 6, 26-66,89-95 as assigned on the syllabus  

All SI sessions during this week are canceled due to the holiday break.  Office hours with Desrochers are as usual
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Fri Nov 22
AR HW #4 Energy in AR thunderstorms     Due  first  thing in lecture
Bond Energies   Tab 9.3                  bring these slides to lecture  
Find delH reaction using bond energies
Pressure and gases     bring these slides to lecture
atm, torr

WORK Ch 10:   6,26-32 as assigned on the syllabus
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Wed Nov 20, Thu Nov 21  LAB =  Thermodynamics (available on the lab downloads page)

Wed Nov 20
        bring these slides to lecture
Determine the enthalpy change for two reactions   burn CH4 and H2
Compare fuels on a per gram basis
Compare to nutrition information at Starbucks  (protein vs carbs vs fat)
    Why do we store unused calories as fat?
Find delHformation of something not in App 2
Work Q 120 in Ch 9   a true summary question about Hess Law
Bond Energies   Tab 9.3            
Find delH reaction using bond energies

READ  Sec 10.1-10.5
WORK remaining Ch 9 as assigned on the syllabus
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We NEED you to be a CoSE Ambassador!
These students fill an important role of help faculty and CoSE dept chairs meet, lead, and marshal students
who are visiting our science and math college.
Give this a look:     https://docs.google.com/forms/d/e/1FAIpQLSe4R9z0HjVRJ6zv6M6cP6C7qxnNa6vhbOUvZQEE2uzn_auykw/viewform
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Mon Nov 18
Quiz 9    key     through Wed's lecture and assigned Ch 9 HW
Hess' Law   bring this to lecture
Heats of formation 1. What does the o mean?
 2. What does the little f mean?
Appendix #2 p A-7

AR HW #4 Energy in AR thunderstorms     Due Fri Nov 22 in lecture

WORK Ch 9: 8-25, 73-78, 83-86 as assigned on the syllabus
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Fri Nov 15
Two q's      1. warm up /cool down    2. phase change
Specific heat   Table 9.2
First Law
Enthalpy     q released/absorbed at constant P
READ Sec 9.1 - 9.10
WORK Ch 9:  50-71 as assigned on the syllabus
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Wed Nov 13, Thu Nov 14    Bring your thermodynamics lab
We will meet in a classroom to complete the lab exercise.
This day will be getting ready for next week's thermodynamics lab.
11 am Wed:  MAN 206     2 pm Wed:  MAN 102      8 am Thu :  MAN 101

Wed Nov 13
Energy vs matter
Energy units:  cal and joules
endothermic vs exothermic    bring these slides

READ Sec 9.1 - 9.6
WORK Ch 9: 8, 15, 31-38

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Mon Nov 11
Exam 4     Ch 7 and 8     key      comments      93, 93, 92, 92, 91 <77.4> 54, 52,  51
provided for you: a periodic table, Tab 8.1
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Things to do before Monday.
Review formulas of ionic compounds from Ch 4
Know the same polyatomic ions you memorized for Quiz 5
Know the big 6 strong acids.  The same way you memorized the difference between mitosis and meiosis.
Know the types of reactions we discussed and themes for products and balancing them.
Know Fig 4.9 and P4 and S8
Know how to use all of the six VIR's

Quiz 8 results not good.  Hazard a guess:  How many people used dilution to work one or both parts of the quiz, when
neither one of the questions was a dilution question.  These people are just not bothering to learn this idea.
For the record.  The majority of questions on the exam will NOT be dilution problems and should NOT be worked that way.
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Fri Nov 8        Jamie Freeman lecturing    jfreeman5@uca.edu
Quiz # 8    molarity    key
Do not miss today.  It will be excellent practice before Monday's exam.
Here all all the slides for Friday    I recommend working these before you come to class.

Normal 1 pm office hours today are canceled.  I will be in my office Nov 7 from 230 - 5 pm if you have
questions before I leave.

WORK remaining Ch 8 as assigned on the syllabus
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Practice exam #4

Use the Self Assessment quizzes as practice exams.  Work them with a timer, by yourself.
Work after with your classmates to check your answers.

p 324-25   allow 25 min for these
p 371-2  (omit Q's 9, 11, 12)   allow 25 min for these
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Wed Nov 6, Thu Nov 7  LAB =  Titrations (available on the lab downloads page)

Wed Nov 6
Making solutions
     1. from scratch     (like  Q's 28 and 34)
    2. by dilution    (like Q 's 39 and 40)
More molarity calculations
Bring to this lecture your titrations prelab

WORK remaining Ch 8 as assigned on the syllabus

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Tue Nov 5  please VOTE! 
Election Day     Polls are open 7:30 am – 7:30 pm on Election Day
UCA has a polling site at Donaghey Hall on Election Day for voters registered in Faulkner County
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Mon Nov 4
Molarity problems of every kind
Finding molarity
Using molarity
Stoichiometry and molarity

WORK Ch 8: 4-31, 42-90 as assigned on the syllabus

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Quiz 7 scores were poor for most.  You can do something about it.
•Work and understand all assigned HW.

•Make a regular habit to see Desrochers

•Regularly attend and use/participate in SI

•Schedule time from a busy week for help

•Use tutoring services paid for by tuition

•Cut back on extras and study more

•Use ALL of F2F lab time for Desrochers help
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Fri Nov 1
Quiz #7     key    predicting reactants, product, and writing balanced reactions
One of my favorite demos of all time   H2SO4(aq)  +   Ba(OH)2(aq)
Molarity  a VIR and one of the most important ideas in Chem 1 and 2
Concentration concept in general     bring this to class  
[    ] notation, ion concentrations

Some asked for more reaction practice.  Here are some more.     answers

WORK Ch 8: 21-28 as assigned on the syllabus
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Wed Oct 30, Thu Oct 31  LAB =  Reactions (available on the lab downloads page)

Wed Oct 30
Net ionic equations
Acids and bases    know the big 6 strong Acids (Table 8.2)
Acid + base reactions     bring this summary of reactions to lecture
Acid + metals
Acid + carbonates

WORK Ch 8:   4, 47-67, 72,  as assigned on the syllabus
READ Sec 8.2-8.9
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Mon Oct 28
Due AR Chemistry HW: Chicken Litter    first thing in lecture
Predict the products:  CuO(s) + H2(g) -->  ??
Aqueous mixtures
Electrolytes: Weak strong non     bring this summary of reactions to lecture   
Precipitation reactions, ionic solubility Table 8.1

WORK Ch 8: 47-58 as assigned on the syllabus
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Fri Oct 25
Quiz #6  Ch 7    key   reaction stoichiometery, limiting reactants, balancing reactions
Combustion reactions   diethyl zinc reacts with air     Article re. dangers of such chemicals
Metal + nonmetal   bring this summary of reactions to lecture
Two non-metals    S8 + O2     P4 + O2     white phosphorus burning

WORK remaining Ch 7 as assigned on the syllabus
READ Ch 7, Sec 8.4-8.7
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Wed Oct 23, Thur Oct 24     Activity = stoichiometry practice    (equivalent to typical labs in points)
We will meet in a classroom to complete the lab exercise.
11 am Wed:  MAN 105      2 pm Wed:  MAN 102      8 am Thu :  MAN  101

Wed Oct 23
Limiting reactant
Percent yield

WORK  Ch 7:  10, 57-67, 79,81,86,93,97 as assigned on the syllabus 

AR Chemistry HW: Chicken Litter  posted, due Oct 28 in lecture
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Most will see that their Exam 3 score in Bb is 2 points higher than the score written on the exams I handed back.

This is because one of the questions was not a fair question as asked:  Question 6(c)  most polar bond.

Some students chose O-F.  I marked C-N as the correct answer.  In fact both of these bonds are polar (because the bonded atoms have different electronegativities). But the amount of difference in their EN is not clear based only on the PT placement.  Each pairing involves two adjacent atoms.  This difference is too close to call armed only with a periodic table and not the EN numbers.  If you check  the values the difference is actually 0.5 for both pairings. Therefore, this question was not fair, and all got 2 pts back regardless of whether they missed this or not.  Students who circled the O-F bond should see me ASAP with their exam.
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Mon Oct 21
Balancing chemical reactions
Reaction stoichiometry    some lecture slides
Limiting reactants

READ Sec 7.1-7.5
WORK  Ch 7:  2,6,15-18,21-32, 35-57 as assigned on the syllabus
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Fri Oct 18   Fall Break no class
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No lab this week Oct 16 or 17 because of fall break
Wed Oct 16     Exam 3  Ch 4,5,6     key    94, 91, 88 <61.6> 25, 23, 14    comments about exam

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Food chemistry    Chemists trying to make a healthier candy bar.  Chem. &. Eng. News Oct 2024

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Practice exam #3

Use the Self Assessment quizzes as practice exams.  Work them with a timer, by yourself.
Work after with your classmates to check your answers.

p 203 Ch 4 (omit Q 8)   allow 30 min for these
p 251-2  Ch 5   allow 30 min for these
p293 Ch 6 (omit Qs 3-7)  allow 15 min for these

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Mon Oct 14
Due first thing in lecture your completed molecular structure activity from lab, including prelab
PAGES STAPLED
Polarity of bonds     bring these to lecture
Polar molecules

WORK Remaining Ch 5,6 as assigned on the syllabus
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Friday Oct 11     Jamie Freeman lecturing    jfreeman5@uca.edu
Bonding loose ends          all of my slides for today
EPG vs MG   CH4, NH3, H2O
Organic shorthand  (understood H's and LP's)
Resonance and...
    bond strength and length  (O2 vs O3)
    Bond averaging

WORK Remaining Ch 5,6 as assigned on the syllabus
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Wed Oct 9, Thur Oct 10  LAB =  Molecular Structure (available on the lab downloads page)
We will meet in a classroom to complete the lab exercise.
11 am Wed:  MAN 105      2 pm Wed:  MAN 102      8 am Thu :  MAN  101
Watch my videos posted on the lab page and/or carefully read the assigned Sections.
We can make a lot of progress in lab if you plan ahead.  Without this preparation, it will be a confusing
3 hour period.

Thu Oct 10 SI this week will be at 3 pm in MAN 101

Wed Oct 9
Ionic vs covalent     bring these to lecture
Chemical bonds
Lewis dot structures
Shape of molecules

READ Ch 5
WORK Ch 4:   remaining as assigned on the syllabus
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Mon Oct 7
Summary figure from last Friday's lecture
Quiz #5  Names and formulas of the 15 red polyatomic ions (including charges)
Naming ionics        bring these to class      bring this too (ionic drugs)
__ite vs  __ate
__ide vs __ite
XOm^n-   and   HXOm^n-
M with more than one charge     V in 4 different states

WORK remaining Ch 4 as assigned on the syllabus
READ Sec 5.2-5.5   before Wed's lecture
READ Sec 6.2-6.3   AND watch the videos posted for the molecular structure lab
before coming to lab this week.

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Fri Oct 4
Combustion analysis
Moles of compounds
Types of compounds:  ionic vs covalent   bring these to lecture
Binary molecular/covelent naming

Mon's quiz is the easiest one all semester, simple memorization
On Mon you will be quizzed over the properly spelled names and formulas (including charges)
of the 15 red polyatomic ions linked here

READ:  Sec 4.1-4.5
WORK Ch 4: 3,23, 30-38, 116,117 as on syllabus

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Wed Oct 2, Thu Oct 3  LAB =  Hydrates (available on the lab downloads page)

Wed Oct 2
Formulas of compounds    Stoichiometry another VIR
Moles of compounds
Mass percent composition of compounds
empirical formula video
molecular formula video

READ Sec 4.9-4.11 before today's lecture
WORK Ch 4:  94,97,105,107-113,138 as assigned on the syllabus
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Mon Sep 30    Exam 2   key       Comments     92 <72.1> 26    Q3 worked the easy way     Q3 worked the hard way
Too many do not know how to do scientific notation reliably.  For many, this cost them, an inability to solve simple equations using scientific notation.
I am trying to understand how these same people confidently worked assigned HW in Ch 2, getting the right answer, based on what I've seen on Exam 2.
Provided: a Periodic Table, any light equations and constants like on Quiz #3

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Fri Sep 27
Quiz #4    key
Ionization energy
Defining equation
IE1 < IE2 < IE3....
Exceptions, Be and B families

WORK remaining Ch 3 as assigned on the syllabus

Here are my answers for the line spectra activity we did in lab.

2-4 pm Demos , chemical hazards, and pizza
Join us by RSVPing using the QR code above.
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Hispanic and Latino chemists you should know about.
Read about some here.
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Practice exam #2

Use the Self Assessment quizzes as practice exams.  Work them with a timer, by yourself.
Work after with your classmates to check your answers.

p 108  Ch 2 (omit Q 5)   allow 20 min for these
p 155-156  Ch 3 (omit Q's 1, 14, 15)   allow 20 min for these
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Wed Sep 25, Thu Sep 26   LAB =  Spectroscopy (available on the lab downloads page) 

Today in lab you need to be able to plot data collected as a spectrum.  Some of you are using copies of Excel running in a server (like in Google or Safari, not running from your hard drive.   You can remember how difficult this was to use that way.  UCA IT says you should download the copy (paid by your tuition) to your hard drive and run it from there.  This way you will have all the Excel functionality and none of the limitations in the very limited online version.

Wed Sep 25
Due AR Chemistry HW: Lonoke Solar Panels  first thing in lecture
Chemistry….ions, common charges        bring this to class
Atom and ion sizes                        electromagnetic shocks (paramagnetism) put to practical use
Valence electrons , isoelectronic
Mg2+, Zn2+, Ca2+, Na+, K+  biochemistry       bring this to class

WORK  Ch 3: 9-29,  62-79,105,106,110 as assigned on the syllabus
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Mon Sep 23                     here is a better image of p and d orbitals I found
electron configurations   Fig on p 133 an excellent summary figure
  order of filling
  Pauli principle
  ms
  Hund’s rule
  Noble gas core (shorthand)
  paramagnetic, diamagnetic
  common T.M. exceptions
Chemistry….ions, common charges        bring this to class

READ    Ch 3 (omit  Sec 3.8)
WORK  Ch 3:11, 18, 45-64 as assigned on the syllabus
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Comment from Desrochers (intended to be helpful).

In looking over Friday's quiz, I anticipated certain things from certain people (now that I've gotten to know you).
Sadly, I saw some of the things I was worried about before the quiz.
I strongly encourage you to use the study sessions, office hours, SI sessions, etc....ahead of Sep 30's Exam #2.

Some MUST do better.  Some CANNOT do better if they keep doing what that have (or have not) been doing
in the past.  You are paying for my help; use it.

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Fri Sep 20
Quiz #3    key   Ch 2
orbitals and periodic table
Quantum model, quantum numbers n, l, ml, ms
Must know shapes and orientations of s, p, d orbitals and how these relate to quantum numbers

bring these to class

READ Ch 3
WORK remaining Ch 2 as assigned on the syllabus

AR Chemistry HW: Lonoke Solar Panels  is posted and due next Wed, Sep 25

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Wed Sep 18, Thu Sep 19   LAB =  Separations (available on the lab downloads page) 

Wed Sep 18
Photons
Planck, photo electric effect
Bohr model   Fig 2.12  

READ  Sec 2.1 - 2.3, 2.5-2.6
WORK  Ch2:  1, 71-78 as assigned on the syllabus
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Mon Sep 16
Light and matter     Great video on light  emission by atoms
Light    speed   wavelength   frequency    light examples
Fig 2.5
Order of common light frequencies

READ  Sec 2.1 - 2.3
WORK  Ch2:  5, 12, 35-48 as assigned on the syllabus
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Fri Sep 13  Exam 1  (Ch's E and 1)    key    97, 96, 95, 94, 94, 91 <79.0>  46, 34,  32     comments
Provided on the exam:  periodic table, all English to metric conversions, those prefixes not memorized

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Practice exam

Use the Self Assessment quizzes as practice exams.  Work them with a timer, by yourself.
Work after with your classmates to check your answers.

p 66-67 Quiz for Ch 1 (omit Q's 2 and 4)   allow 25 min for these
p 27  Quiz for Ch E (omit Q's 1 and 5)   allow 20 min for these

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Wed Sep 11, Thu Sep 12  
A Rare exam review day. 
Bring your book and be ready to work

11 am Wed lab in MAN 105
2 pm Wed lab in MAN 102 (classroom)
8 am Thu lab in MAN 101  
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Wed Sep 11
Working LOTS of mole problems in lecture today    practice from lecture

WORK Remaining Ch 1 as assigned on the syllabyus
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Mon Sep 9
Quiz #2   key
Moles    Bring these to class
NA               Why that number?    Why such a ridiculously large number?                                    
molar mass  in g vs atomic mass  in amu   conceptual differences despite the #'s being the same

READ Ch 1
WORK Ch 1: 93-118 as assigned on the syllabus
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Fri Sep 6
Due today AR Chemistry HW: Toxic Shot   first thing in lecture  
Isotopes           ATOM p e n summary slide
Percent natural abundance                            some isotope slides
Average atomic mass
Mass spectrometry

Ga isotope  work

READ Ch 1
WORK  Ch 1:  69-92 as assigned on the syllabus
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Wed Sep 4, Thu Sep 5   LAB =  Density  lab (available on the lab downloads page) 

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Wed  Sep 4
Structure of the atom
p    e    n   Table 1.1
e the  fundamental unit of charge
oil drop experiment
charged particles in electrical and magnetic fields
9:40 Jacob Christie

READ Ch 1
WORK   Ch 1: 26, 49-68 as assigned on the syllabus

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Tue Sep 3  REMINDER

SI today for Thu 8 am lab students.  Others are also welcome   2:40  pm in MAN 105
Study session today (see revised syllabus, post survey)   4 pm in MAN 105

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Mon Sep 2    LABOR Day !

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Fri Aug 30
Quiz #1    key
Work #77 or 78 Ch E
element, compound, homo-/heterogeneous mixtures
Dalton's laws

READ Ch 1
WORK Ch 1:  5-7, 35-42 as assigned on the syllabus

How Venus may have lost its water to space.
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SI sessions start this week.  They will probably not last the whole time this first week.

All are in MAN Rm 105.  Ideally attend the session in your schedule associated with your particular lab.

Mon Aug 26, 3 - 350 pm       Tue Aug 27 240-330 pm         Thu Aug 29, 405-455 pm      

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Wed Aug 28, Thu Aug 29   LAB =  Measurements  lab (available on the lab downloads page) 

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Wed Aug 28
Density VIR #1 T dep video (demo)    
Using density
Working lots of Ch E style questions in lecture today.
Bring a copy of AR Chemistry HW: Toxic Shot to class    This is worth points and will be due Sep 6.
Quiz #1 on Fri

READ ahead Ch 1 for Fri
 WORK   all remaining Ch E as assigned on the syllabus.
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The Animation Lab at the University of Utah brings molecules to life
Jonathan Feakins, special to C&EN     August 22, 2024

See this cool video here
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Scientific notation using a generic scientific calculator

Scientific notation using a TI-84 calculator
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SI sessions start this week.  They will probably not last the whole time this first week.

All are in MAN Rm 105.  Ideally attend the session in your schedule associated with your particular lab.

Mon Aug 26, 3 - 350 pm       Tue Aug 27 240-330 pm         Thu Aug 29, 405-455 pm      

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Mon Aug 26
FYI a revised syllabus, now with SI leader names and emails has been posted.

intuition for common units      figures on unit intuition         more figures from lecture
English to metric always  given  (you will  get a copy of a table like this all the time)
Two practice problems     Don't look at the answers until you have attempted these problems.
   1. pages covering table      answer      
  2. mass of one piece of paper       answer    
intuition for common units     figures on unit intuition 
T  units
TO DO after lecture
WORK the prelab for Wed/Thu lab
WORK Ch E 2,4,20-23, 43-48, 62-73 as assigned on the syllabus

NOTE SI introductory sessions this week, all in MAN 105,  today will likely not run the whole time
Mon 3 - 350 pm    (for people in Wed 11 am lab)
Tue 240-330 pm  (for people in Thu 8 am lab)
Thu 405-455 pm  (for people in Wed 2 pm lab)
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Office of student success.  Your tuition paying for this great advice and help.

https://uca.edu/studentsuccess/

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Emergency Textbook Grant opens August 19, 2024 

This semester, UCA is continuing its program to assist students facing extreme hardship or financial crisis with the purchase of their course textbooks.  

 

To apply, students should visit uca.edu/go/TextbookGrant and complete the online application. There will be an application period from August 19, 2024, to September 20, 2024, or until funds are exhausted, whichever comes first.  In past semesters, funds were exhausted within the first week

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Chemical & Engineering News   (C&ENews)   Available to you online through the UCA library link here
I get lots of our general interest chemistry stories from this weekly publication.

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Fri Aug 23    Each day you will find a list of topics to be discussed in lecture including some slides we will use that day.
EAA, Safe at UCA      WATCH Desrochers going over the syllabus and website
units and prefixes (must know kilo-, centi-, milli-, others given)       Hg/Al video from today's lecture
intuition for common units      figures on unit intuition         more figures from lecture
English to metric always  given  (you will  get a copy of a table like this all the time)
problem solving approaches

TO DO  before Mon Aug 26 (our next class period) Read: Ch E    Work Ch E:  24-41 as assigned on the syllabus
TO DO by Sat Aug 24  (then enjoy your weekend)
    WATCH this introductory video (in preparation) about me and our class
    COMPLETE  survey of preferred times for study sessions  (soon to establish study session days and times)
    CLICK all over my website and the BB page so you know the location of ALL course resources.
    SEND questions, concerns about the class, the book, my website, etc. to Desrochers