Wednesday, October 28, 2009
Wednes-Day 1
Bio 3/6- we saw an animation of a complete cell cycle including the details of the three parts of interphase, the four phases of mitosis, and the (usually) accompanying cytokinesis.
We drew out these details on a worksheet.
We then continued our discussion of the state osmosis/using indicators lab.
AP Chem- we discussed HOW thermochemical measurements are made: commonly, two different types of calorimeters are used, one is a "coffee cup" calorimeter in which constant pressure conditions are maintained, usually for mixed solutions; the other is a "bomb" calorimeter in which pressure can vary greatly due to the sealed, constant volume condition- this calorimeter is used to combust small samples of a reactant with oxygen.
We tried to invent thermodynamics in the sense that we needed a system by which to define and measure energy changes in a system. We needed something called "specific heat capacity" as well as , for a given particular object, just "heat capacity".
We described the qualitative meaning of substances that have high or low specific heat capacities.
We saw how specific heat is measured for a given substance.
We drew out these details on a worksheet.
We then continued our discussion of the state osmosis/using indicators lab.
AP Chem- we discussed HOW thermochemical measurements are made: commonly, two different types of calorimeters are used, one is a "coffee cup" calorimeter in which constant pressure conditions are maintained, usually for mixed solutions; the other is a "bomb" calorimeter in which pressure can vary greatly due to the sealed, constant volume condition- this calorimeter is used to combust small samples of a reactant with oxygen.
We tried to invent thermodynamics in the sense that we needed a system by which to define and measure energy changes in a system. We needed something called "specific heat capacity" as well as , for a given particular object, just "heat capacity".
We described the qualitative meaning of substances that have high or low specific heat capacities.
We saw how specific heat is measured for a given substance.
# posted by C @ 4:33 PM 
