Tuesday, October 24, 2006
Tuesday
files and recap to be posted at around 8PM...no rush if you don't get to them until tomorrow...
files are up, finally.
AP: finished Calorimetry...MAKE sure that you KNOW the difference between heat capacity and specific heat (capacity)...also know what molar heat capacity means...know the UNITS for each of those terms for consistency....be careful in a calorimetry problem that gives you the heat capacity of the calorimeter as well as the specific heat of the water put inside the heat capacitor to absorb some of the heat released from the reaction...the equation MUST include the absorption of heat by the calorimeter AND by the water!
We then took advantage of Hess's Law which takes advantage of H, enthalpy, which is a STATE function. In problems, you will be given ALL BUT ONE of the energy change quantities: IE, EA, Lattice Energy, Heats of sublimation, formation, hydration, etc.
You MUST know how to draw the diagrams properly: labels, units, and relatively to scale.
D, G: we discussed the Nobel Prize winning Photoelectric Effect experiment and explanation from Einstein, who used Planck's Theory to explain the experimental results. Einstein won the Nobel ONLY for this paper!! That's just sad.
E: We did more Bohr models of atoms and ions, more examples of ground and excited state configurations. Then, since there were some problems with the Bohr model, we introduced the modern quantum mechanical model of the atom (very brief intro, much more to see with that!).
Then we did the emission spectra lab; the writeup for that will likely be posted this weekend.
files are up, finally.
AP: finished Calorimetry...MAKE sure that you KNOW the difference between heat capacity and specific heat (capacity)...also know what molar heat capacity means...know the UNITS for each of those terms for consistency....be careful in a calorimetry problem that gives you the heat capacity of the calorimeter as well as the specific heat of the water put inside the heat capacitor to absorb some of the heat released from the reaction...the equation MUST include the absorption of heat by the calorimeter AND by the water!
We then took advantage of Hess's Law which takes advantage of H, enthalpy, which is a STATE function. In problems, you will be given ALL BUT ONE of the energy change quantities: IE, EA, Lattice Energy, Heats of sublimation, formation, hydration, etc.
You MUST know how to draw the diagrams properly: labels, units, and relatively to scale.
D, G: we discussed the Nobel Prize winning Photoelectric Effect experiment and explanation from Einstein, who used Planck's Theory to explain the experimental results. Einstein won the Nobel ONLY for this paper!! That's just sad.
E: We did more Bohr models of atoms and ions, more examples of ground and excited state configurations. Then, since there were some problems with the Bohr model, we introduced the modern quantum mechanical model of the atom (very brief intro, much more to see with that!).
Then we did the emission spectra lab; the writeup for that will likely be posted this weekend.
# posted by C @ 6:08 PM 
