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PS.121 Links
» §1 Syllabus » §3 Syllabus - - - - » Unit 1 » Unit 2 » Unit 3 (here!) => - - -Pearson- - -
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Physical Science For Teachers - Chemistry (PS.121) - Course Home Page
My office: Science 159 (below ramp to 3rd Ave) my e-mail : foltzc@marshall.edu don't phone - stop in! Last Web-Works are due Sun.Dec.10Quiz 5 was ThuR.Nov.16Exam 3 will be Tue.Dec.12 ... 8 am and 3 pm plan for Quiz 6 to be Tue.Dec.05
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| week of | Tuesday | Thursday |
| Oct.31 | react elements to synthesize a compound
balance atoms in a reaction equation ... use small integers ! . . . "limiting reagent" and % yield computation decompose a compound into its elements each element is conserved (same # both sides) . . . % product extracted |
single species replacement
... which will replace which? eXothermic electrically polar regions on molecules (electronegativity) atoms' attraction reducing their electrical PE double replacement (trade places) ... why don't they trade back? eNdothermic |
| Nov.07 | "reaction process" Energy graphs for eXothermic process
"activation energy" reduces spontaneous reactions catalyst reduces activation energy "hump" => increase reaction rate Energy vs. reaction process for eNdothermic reactions ... needs "activation hump" to not spontaneously reverse |
Thermal Energy driving eNdo reaction
H− concentration driving Mn reduction pH measurement for household materials pH as "# zeroes of H dilution" ... pOH as "# zeroes of OH dilution" .001 acid has pH 3 (pOH=11) ; dilute/1000 → pH 6 (pOH=8) .0001 base = pOH 4 (pH=10) , dilute/100 → pOH 6 (pH=8) |
| Nov.14 | acid + base (neutralize) → salt + HOH
prepare vitamine C tablet as acid to neutralize : NaOH until "pH indicator" changes color how much base was needed? mL OH × mmol/mL => mmol acid ... × mg/mmol => mg vit.C |
Quiz 5
electric Energy driving eNdo reaction oxidation/reduction reactions inside a battery measuring various "cell voltages" : => "electron affinity" (not electronegativity) |
| Nov.21 | :
Thanksgiving Preparation : |
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Thanksgiving Feast Day : |
| Nov.28 | carbon always forms 4 bonds
alkane, elkene, alkyne hydrocarbon chains count C's as "meth-, eth-, prop-, but-, pent- ..." ... count double-bonds (or triple) as "mono, di, tri, ..." how many different places for these bonds? "isomers" cyclic hydrocarbons |
alkahol carbohydrate chains
ethers ( see organic group structures & names ) aldehydes and carboxylic acids ketones and esters amines & ring amines sugars: mono-saccharides and di-saccharides |
| Dec.05 | Quiz 6
oils and fats saturated oils hydrogenated oils amino acids proteins |
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Post-Instruction Assessment : Review Time : |
| Dec.12 | :
: Unit 3 Exam : : |
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: make-up exams? : : |
| maintained by Curt Foltz - email comments to foltzc@marshall.edu
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