Wednesday, April 30, 2014
Wednes-Day 2
Chem 5 - worked on 2013.
Nobody had a clue why molten salt vs. solid salt is needed in electrolytic (or any) cell.
7/8 - as above.
APB - finished and clarified double slit, m value in equation.
went over approximation and limits of theta.
did single slit (just told/showed pic, didn't derive).
worked on speed of sound and string wave labs.
Nobody had a clue why molten salt vs. solid salt is needed in electrolytic (or any) cell.
7/8 - as above.
APB - finished and clarified double slit, m value in equation.
went over approximation and limits of theta.
did single slit (just told/showed pic, didn't derive).
worked on speed of sound and string wave labs.
# posted by C @ 1:10 PM 
Tuesday, April 29, 2014
Tues-Day 1
Chem 4/5 - did IMFA with respect to solubility of solute-solvent interactions.
Did mass spec prediction and interpretation.
Worked on 2013 exam.
Chem 8 - up to mass spec.
APB - did dispersion form of refraction, separation of color angles.
Derived Double slit formula.
*** must note that whole wavelength path difference increases , one m at a time with each maximum.
That will simplify the redundancy in the derivation.
Did mass spec prediction and interpretation.
Worked on 2013 exam.
Chem 8 - up to mass spec.
APB - did dispersion form of refraction, separation of color angles.
Derived Double slit formula.
*** must note that whole wavelength path difference increases , one m at a time with each maximum.
That will simplify the redundancy in the derivation.
# posted by C @ 8:12 PM
Mon-Day 2
Chem 4/5 - covered physical properties with respect to vapor pressure, bp, mp.
did UV/IR visible spec.
8 - up to UV IR
APB - finished critical angle, refraction, and did law of reflection
did UV/IR visible spec.
8 - up to UV IR
APB - finished critical angle, refraction, and did law of reflection
# posted by C @ 8:10 PM
Friday, April 25, 2014
Fri-Day 1
Chem 4/5 - did full spec 20 lab purpose, procedure, and analysis on video. Showed common lab errors.
Did q1 and part of 2 on 2011 exam
8 - spec 20 as above (on Mon - tell of kinetics application)
APB - Waves I exam.
Did q1 and part of 2 on 2011 exam
8 - spec 20 as above (on Mon - tell of kinetics application)
APB - Waves I exam.
# posted by C @ 11:02 AM
Thurs-Day 2
Chem 5 - did more of the 1999 mc exam, due tomorrow.
7/8 - covered alloys, metallic bonding (advanced), UV/IR spectroscopy purposes, semi-metal doping.
worked on 99 exam
APB - derived Snell's law (three permutations) from a wave-front and ray diagram; drew general inferences depending on speed of wave in one medium vs. another; practiced, and then did critical angle special case.
Waves I exam tomorrow.
7/8 - covered alloys, metallic bonding (advanced), UV/IR spectroscopy purposes, semi-metal doping.
worked on 99 exam
APB - derived Snell's law (three permutations) from a wave-front and ray diagram; drew general inferences depending on speed of wave in one medium vs. another; practiced, and then did critical angle special case.
Waves I exam tomorrow.
# posted by C @ 11:00 AM
Wednesday, April 23, 2014
Wednes-Day 1 (after Spring Break)
Chem 4/5 - started review by tying up extraneous topics:
Alloys and their physical properties.
Metallic bonds via MO theory.
Semi-metal doping.
UV, IR, and visible spectroscopy.
Tomorrow- finish with Beer's Law colorimetry in kinetics problems.
Finish 1999 exam.
Chem 8- began 1999 analysis.
APB - did final review of Waves 1, showing the difference between harmonics and pipe length.
Started Waves 2 by looking at various terms/phenomena: reflection, refraction, diffraction.
Showed the "bending" of incident waves (at an angle to the normal) is caused really by the change in speed of the wave. (showed via videos).
started to derive Snell's law.
Alloys and their physical properties.
Metallic bonds via MO theory.
Semi-metal doping.
UV, IR, and visible spectroscopy.
Tomorrow- finish with Beer's Law colorimetry in kinetics problems.
Finish 1999 exam.
Chem 8- began 1999 analysis.
APB - did final review of Waves 1, showing the difference between harmonics and pipe length.
Started Waves 2 by looking at various terms/phenomena: reflection, refraction, diffraction.
Showed the "bending" of incident waves (at an angle to the normal) is caused really by the change in speed of the wave. (showed via videos).
started to derive Snell's law.
# posted by C @ 5:49 PM
Saturday, April 12, 2014
Fri-Day 2
Chem 5 - finished Nernst and then did overview of electrolytic cells.
The rest is done on Edline, over the break.
7/8 - as above up to basics of electrolytic cells.
APB - showed variable pipe length question to show points of standing wave resonance- THESE ARE NOT DIFFERENT HARMONICS! An nth harmonic is a multiple of the first harmonic! Thus, with a constant f tuner at the open end of the pipe, only one f is used and all varying lengths just show when the resonance standing wave condition is met!
The rest is done on Edline, over the break.
7/8 - as above up to basics of electrolytic cells.
APB - showed variable pipe length question to show points of standing wave resonance- THESE ARE NOT DIFFERENT HARMONICS! An nth harmonic is a multiple of the first harmonic! Thus, with a constant f tuner at the open end of the pipe, only one f is used and all varying lengths just show when the resonance standing wave condition is met!
# posted by C @ 7:23 PM
Thursday, April 10, 2014
Thurs-Day 1
Chem 4/5 - thermo exam
8- finished just up to but not yet introducing the Nernst.
Didn't explicitly relate E standard to K.
APB - derived fully in terms of pressure AND displacement waves, the odd and even case fundamental frequencies.
Unit over....
# posted by C @ 2:48 PM
Wednes-Day 2
Chem 5 - covered standard electrode potential calcs and how to influence to Ecell by changing concentrations of half cell aq ions or pressures of gases.
Test tomorrow and then Nernst on Fri. Intro electrolytic (show all permutations).
7/8 - up to 5th
APB - explained superposition and interference, how to add waves.
Derived the standing wave equation for the even case in a string/ed instrument.
Related harmonics (starting with fundamental), and even showed equation down to tension and density level.
Test tomorrow and then Nernst on Fri. Intro electrolytic (show all permutations).
7/8 - up to 5th
APB - explained superposition and interference, how to add waves.
Derived the standing wave equation for the even case in a string/ed instrument.
Related harmonics (starting with fundamental), and even showed equation down to tension and density level.
# posted by C @ 7:34 AM
Tuesday, April 8, 2014
Tues-Day 1
Chem 4/5 - did electrochemical cell construction, conventions, meaning and calc of std cell potential diff.
Use of SRP table.
8- up to intro to SRP table.
APB - mostly review: (decibel convention) , wave speed in a medium calc, relations, doppler problems, reflection and transmission problems.
Tomorrow - begin interference and do all harmonics!!!
Use of SRP table.
8- up to intro to SRP table.
APB - mostly review: (decibel convention) , wave speed in a medium calc, relations, doppler problems, reflection and transmission problems.
Tomorrow - begin interference and do all harmonics!!!
# posted by C @ 1:31 PM
Monday, April 7, 2014
Mon-Day 2
Chem 5 - began electrochem discussing half cells and relative cell potentials (attractions or electrons) and Volts as work/energy per C of charge exchanged.
7/8 - MISSED HALF OF 7 (in 253 preoccupied....)
just did thermo review problems.
APB - Magnetism exam.
7/8 - MISSED HALF OF 7 (in 253 preoccupied....)
just did thermo review problems.
APB - Magnetism exam.
# posted by C @ 11:37 AM
Fri-Day 1
Chem 4/5 - finished thermo unit with Gibbs Free Energy derivation and meaning.
Began review set of 10 problems - post to Edline on Tuesday.
Chem 8 - up to end of unit, no review problems
APB - did sound intensity, Doppler derivation and formula.
Began review set of 10 problems - post to Edline on Tuesday.
Chem 8 - up to end of unit, no review problems
APB - did sound intensity, Doppler derivation and formula.
# posted by C @ 11:35 AM
Sunday, April 6, 2014
Thurs-Day 2
Chem 5 - wenti through qualitative and quantitative entropy/2nd law of thermo.
7/8 - as above, and showed derivation of Gibbs equation of 2nd law.
APB - finished magnetism with mass spec derivation and pulling loop out of B field resistance phenomena.
Began waves with basic demos and defninitions.
7/8 - as above, and showed derivation of Gibbs equation of 2nd law.
APB - finished magnetism with mass spec derivation and pulling loop out of B field resistance phenomena.
Began waves with basic demos and defninitions.
# posted by C @ 12:53 PM
Wednesday, April 2, 2014
Wednes-Day 1
Chem 4/5 - began thermo unit covering the two driving forces of chemistry, the concept of entropy, the mathematical formula for entropy, and the relationship between reversible heat changes at a given temperature and entropy.
8- up to describing two driving forces.
APB - finished with pulling loop out of, pushing loop into magnet field, and the subsequent induction processes that lead to magnetic resistance to either pulling or pushing action.
Began Waves 1; just the basics. This unit is not complex.
8- up to describing two driving forces.
APB - finished with pulling loop out of, pushing loop into magnet field, and the subsequent induction processes that lead to magnetic resistance to either pulling or pushing action.
Began Waves 1; just the basics. This unit is not complex.
# posted by C @ 1:12 PM
Tuesday, April 1, 2014
Tues-Day 2
Chem 5 - did Hess Law problems through Born Haber and BDE to get net delta H estimate.
Chem 7/8 - up to BDE without finishing that problem type.
Tomorrow, begin entropy.
APB - spent an extra day on induction clarifying the major distinction of finding the induced current direction in a straight wire vs in a loop of wire! HUGE DIFF.
For straight wire, must use direction of force on charges in moving wire to infer current direction!
For loop, use the opposition to flux change in LOOP AREA.
Chem 7/8 - up to BDE without finishing that problem type.
Tomorrow, begin entropy.
APB - spent an extra day on induction clarifying the major distinction of finding the induced current direction in a straight wire vs in a loop of wire! HUGE DIFF.
For straight wire, must use direction of force on charges in moving wire to infer current direction!
For loop, use the opposition to flux change in LOOP AREA.
# posted by C @ 12:34 PM
