Friday, January 31, 2014
Fri-Day 2
Chem 5 - finished multiple equilibria K values; showed relationship between k and K.
Chem 7/8 - as above through reaction quotient vs. K, reaction shift prediction.
APB - double period thoroughly explaining charging via conduction vs. induction; polarization.
Chem 7/8 - as above through reaction quotient vs. K, reaction shift prediction.
APB - double period thoroughly explaining charging via conduction vs. induction; polarization.
# posted by C @ 4:39 PM 
Thursday, January 30, 2014
Thurs-Day 1
Chem 4/5 - K calcs , conversion of Kc to Kp, manipulations of multiple equilibria.
Forced quiz on oxidation numbers tomorrow due to outrageous lack of effort.
Chem 8 - K calcs, just plugging in eq. values.
Solid gas eq phenomena intro explanation.
APB - began electrostatics with pith , rod demos of two charge types.
Buoyancy lab done.
Forced quiz on oxidation numbers tomorrow due to outrageous lack of effort.
Chem 8 - K calcs, just plugging in eq. values.
Solid gas eq phenomena intro explanation.
APB - began electrostatics with pith , rod demos of two charge types.
Buoyancy lab done.
# posted by C @ 5:10 PM
Wednes-Day 2
Chem 5 - did equilibrium constant expressions;
Chem 7/8 - through constant expressions and simple plugging in.
Tremendous time wasted on basic questions.
Over 1 week behind.
APB - finished Fluids with remaining Bernoulli examples - airplane wing, Venturi meter.
Sumner video demos.
Chem 7/8 - through constant expressions and simple plugging in.
Tremendous time wasted on basic questions.
Over 1 week behind.
APB - finished Fluids with remaining Bernoulli examples - airplane wing, Venturi meter.
Sumner video demos.
# posted by C @ 5:07 PM
Tuesday, January 28, 2014
Tues-Day 1
Chem 4/5 - Kinetics Exam
8- began equilibrium with definitions and law of mass action data.
APB - did several conceptual problems including denser than water anchor inside and outside of boat in a pond. Then did the first two of five Bernoulli applications - fluid at same level in constricting pipeline, and Torricelli theorem freefalling fluid in a fluid tower with two assumptions about v when R tower is much greater than R spigot, and also that P tower = P spigot = Patm when the spigot is opened enables the result to be that expected for transformation of Ug to K.
8- began equilibrium with definitions and law of mass action data.
APB - did several conceptual problems including denser than water anchor inside and outside of boat in a pond. Then did the first two of five Bernoulli applications - fluid at same level in constricting pipeline, and Torricelli theorem freefalling fluid in a fluid tower with two assumptions about v when R tower is much greater than R spigot, and also that P tower = P spigot = Patm when the spigot is opened enables the result to be that expected for transformation of Ug to K.
# posted by C @ 7:18 AM
Monday, January 27, 2014
Mon-Day 2
Chem 5 - introduced equilibrium definition, showed relation to kinetics, showed data that led to law of mass action; showed that pure solids and liquids do not belong in K expression due to lack of change at a given T.
7/8 - Kinetics unit exam.
APB - did qualitative analysis of Bernoulli eq, predicting pressure changes based on change in fluid elevation or change in fluid speed.
Will present Bernoulli in terms of TME equation: Wnc (due to pressure) = d K + d U.
Handed out hw 47 and 48, more data on buoyancy lab.
7/8 - Kinetics unit exam.
APB - did qualitative analysis of Bernoulli eq, predicting pressure changes based on change in fluid elevation or change in fluid speed.
Will present Bernoulli in terms of TME equation: Wnc (due to pressure) = d K + d U.
Handed out hw 47 and 48, more data on buoyancy lab.
# posted by C @ 9:13 AM
Fri-Day 1
Chem 4/5 - finished Arrhenius, and then did applications, best-fit line calculator regression, and overall problems.
Chem 8 - as above, put review problems with answers on Edline.
APB - did Archimedes apparent weight questions and general formula derivation; introduced Bernoulli equation as conservation of energy per volume; qualitatively solved the equation.
Continued buoyancy lab.
Chem 8 - as above, put review problems with answers on Edline.
APB - did Archimedes apparent weight questions and general formula derivation; introduced Bernoulli equation as conservation of energy per volume; qualitatively solved the equation.
Continued buoyancy lab.
# posted by C @ 9:11 AM
Saturday, January 25, 2014
Thurs-Day 2
Wednesday was our second snow day of the school year.
Chem 5 - looked at factors relating rate constant to Eact and temperature; developed Arrhenius equation forms.
Chem 7/8 - finished 2nd order kinetics and then set up Arrhenius.
APB - derived general formulas for fluid pressure at a given depth, U-tube change in height of fluids ratio, barometer heights, buoyancy force, fraction of floating solid volume submerged, hydraulic jack ratio force and change in height ratios.
Chem 5 - looked at factors relating rate constant to Eact and temperature; developed Arrhenius equation forms.
Chem 7/8 - finished 2nd order kinetics and then set up Arrhenius.
APB - derived general formulas for fluid pressure at a given depth, U-tube change in height of fluids ratio, barometer heights, buoyancy force, fraction of floating solid volume submerged, hydraulic jack ratio force and change in height ratios.
# posted by C @ 8:22 PM
Wednesday, January 22, 2014
Tues-Day 1
Monday was MLK Day
Chem 4/5 - liteshow disabled, now fixed.
Covered through 2nd order time rate law and then dependence of k on T, as well as Eact determination from many trials at different temperatures, best fit line.
On Thursday (Wed is snow day), hand out notes on this, and go over Eact vs k vs T dependence, qualitatively.
8- through 2nd order rate law.
APB - Thermodynamics exam
Chem 4/5 - liteshow disabled, now fixed.
Covered through 2nd order time rate law and then dependence of k on T, as well as Eact determination from many trials at different temperatures, best fit line.
On Thursday (Wed is snow day), hand out notes on this, and go over Eact vs k vs T dependence, qualitatively.
8- through 2nd order rate law.
APB - Thermodynamics exam
# posted by C @ 2:00 PM
Fri-Day 2
Chem 5- covered through first order time rate law
Chem 7/8 - as above
APB - fluids: covered Archimedes buoyancy force determination (didn't do permutations) and Pascal's principle with application to hydraulic lift.
Chem 7/8 - as above
APB - fluids: covered Archimedes buoyancy force determination (didn't do permutations) and Pascal's principle with application to hydraulic lift.
# posted by C @ 1:57 PM
Thursday, January 16, 2014
Thurs-Day 1
Chem 4/5 - finished data table determination of rate laws.
derived time dependent rate laws and half lives for 0th and 1st order kinetics.
8 - up to zeroth order kinetics relation.
APB - did gauge pressure , total pressure difference and example; car mass from tread.
did U-tube relative density of two liquids problem. Scuba problem.
Start barometers tomorrow.
derived time dependent rate laws and half lives for 0th and 1st order kinetics.
8 - up to zeroth order kinetics relation.
APB - did gauge pressure , total pressure difference and example; car mass from tread.
did U-tube relative density of two liquids problem. Scuba problem.
Start barometers tomorrow.
# posted by C @ 4:49 PM
Wednesday, January 15, 2014
Wednes-Day 2
Chem 5 - did rate law determination, formal and infomal, from data tables; units, k calculation, predicting and relating rates.
7/8 - as above.
APB - began Fluid unit - Pascal vases, pressure definition, and derivation of pressure at a given depth in a fluid.
7/8 - as above.
APB - began Fluid unit - Pascal vases, pressure definition, and derivation of pressure at a given depth in a fluid.
# posted by C @ 6:16 PM
Tues-Day 1
Chem 4/5 - did plausible vs. rejected mechanisms. did steady-state fast-slow approximation.
Began data table analysis to determine exponents in rate law.
8 - up to end of mechanisms.
APB - finished thermo unit with Carnot cycle and efficiency questions. Derived efficiency vs. power expressions.
Began data table analysis to determine exponents in rate law.
8 - up to end of mechanisms.
APB - finished thermo unit with Carnot cycle and efficiency questions. Derived efficiency vs. power expressions.
# posted by C @ 6:51 AM
Tuesday, January 14, 2014
Mon-Day 2
Chem 5 -covered the translation of conc vs. time graphs to rate vs conc graph to rate law determination for a given reactant in a given reaction.
Saw how to linearize data to determine reaction order/exponent.
Chem 7/8 - as above , then introduced criteria for plausible (and likely) mechanism, given an empirical rate law.
APB - Thermal Physics Exam.
Saw how to linearize data to determine reaction order/exponent.
Chem 7/8 - as above , then introduced criteria for plausible (and likely) mechanism, given an empirical rate law.
APB - Thermal Physics Exam.
# posted by C @ 1:38 PM
Friday, January 10, 2014
Fri-Day 1
Chem 4/5 - did rate of appearance/disappearance/reaction conversions.
Discussed reaction mechanisms, elementary steps, rate determining steps.
Showed plot of conc vs. time from multiple trials translated to initial conc vs. initial rate in order to determine the ORDER/MOLECULARITY of a given reactant in the mechanism.
Chem 8 - got up to explaining molecularity in a mechanism.
APB - did thermo cycles for engines and freezers; looked at practical examples of each.
did 3 questions with examples showing ccw = heat pump out and cw = engine!
Labs handed in.
Discussed reaction mechanisms, elementary steps, rate determining steps.
Showed plot of conc vs. time from multiple trials translated to initial conc vs. initial rate in order to determine the ORDER/MOLECULARITY of a given reactant in the mechanism.
Chem 8 - got up to explaining molecularity in a mechanism.
APB - did thermo cycles for engines and freezers; looked at practical examples of each.
did 3 questions with examples showing ccw = heat pump out and cw = engine!
Labs handed in.
# posted by C @ 2:57 PM
Thurs-Day 2
Chem 5 - finished convention of rate of reaction from reactant/product data, and related to graphs of conc. vs. time slopes/relative slopes....curves flatten at equilibrium.
Chem 7/8 - up to 5.
APB - covered isothermal and adiabatic cases; did adiabatic demo.
Chem 7/8 - up to 5.
APB - covered isothermal and adiabatic cases; did adiabatic demo.
# posted by C @ 2:53 PM
Wednesday, January 8, 2014
Wednes-Day 1
Chem 4/5 - discussed the various kinetic factors with respect to avg KE collisions, orientation, and collision frequency, and ultimately the effective collision rate.
Began to look at graphical methods of determining reaction rates, and comparing reaction rate to the rates of appearance/disappearance of products/reactants.
Chem 8 - up to surface area influence on rxn rate.
APB - covered isobaric and isochoric graphs and equations. Derived the Cp and Cv values.
Discussed but did not yet do isothermal and adiabatic curves. HW 39 handed out.
Began to look at graphical methods of determining reaction rates, and comparing reaction rate to the rates of appearance/disappearance of products/reactants.
Chem 8 - up to surface area influence on rxn rate.
APB - covered isobaric and isochoric graphs and equations. Derived the Cp and Cv values.
Discussed but did not yet do isothermal and adiabatic curves. HW 39 handed out.
# posted by C @ 2:53 PM
Tuesday, January 7, 2014
Tues-Day 2
Chem 5 - began Kinetics Unit
7/8 - Unit exam on Bonding etc.
APB - corrected kinetic molecular derivation error;
continued with first law and examined each of the four cases with respect to U, T, q, w.
Finished momentum and torque lab data collection.
7/8 - Unit exam on Bonding etc.
APB - corrected kinetic molecular derivation error;
continued with first law and examined each of the four cases with respect to U, T, q, w.
Finished momentum and torque lab data collection.
# posted by C @ 5:37 PM
Mon-Day 1
Chem 4/5 - gave unit exam on Bonding/Molecular Geom/IMFA
Chem 8 - started second semester introducing Chemical Kinetics:
discussed effective collisions and nature of reactants.
APB - Began Thermodynamics unit; discussed each law, and focused on first law conventions.
Chem 8 - started second semester introducing Chemical Kinetics:
discussed effective collisions and nature of reactants.
APB - Began Thermodynamics unit; discussed each law, and focused on first law conventions.
# posted by C @ 5:36 PM
Friday was a snow day!
New Year Thurs-Day 2
Chem 5/7/8 - covered photoelectrons spectroscopy, and the Cannizzaro method for determining the atomic mass of an element.
APB - covered k-m theory application to V rms of ideally behaving gases as related to GFM and T, using either kb or R.
APB - covered k-m theory application to V rms of ideally behaving gases as related to GFM and T, using either kb or R.
# posted by C @ 5:33 PM
Fri-Day 1
Thurs-Day 2
