Thursday, November 4, 2010
Thurs-Day 1
Physics - took our Dynamics/Forces part 1 multiple choice exam.
We then finished the second Force vs. Acceleration lab in which we observed Newton's Second Law: Fnet = ma.
AP Chem - we did another electronic transition calculation, predicting first the expected type of EMR emitted.
We then discussed the failure of the Bohr Model to predict the emission spectra of ANY element, except that of a ONE ELECTRON system e.g. H, He +, Li 2+...
We also strongly reinforced the concept of Coulomb's Law and its relationship to potential energy:
the greater the attraction between positive and negative, the LOWER the potential energy, the MORE stable the system.
From this, we saw the He +, and Li 2+ not ONLY have lower PE principal energy levels, BUT ALSO that the energy DIFFERENCE between each corresponding pair of energy levels is DIFFERENT for each element, resulting in the emission of DIFFERENT and unique energy photons from each different element.
We then finished the second Force vs. Acceleration lab in which we observed Newton's Second Law: Fnet = ma.
AP Chem - we did another electronic transition calculation, predicting first the expected type of EMR emitted.
We then discussed the failure of the Bohr Model to predict the emission spectra of ANY element, except that of a ONE ELECTRON system e.g. H, He +, Li 2+...
We also strongly reinforced the concept of Coulomb's Law and its relationship to potential energy:
the greater the attraction between positive and negative, the LOWER the potential energy, the MORE stable the system.
From this, we saw the He +, and Li 2+ not ONLY have lower PE principal energy levels, BUT ALSO that the energy DIFFERENCE between each corresponding pair of energy levels is DIFFERENT for each element, resulting in the emission of DIFFERENT and unique energy photons from each different element.
# posted by C @ 6:48 PM 
