Wednesday, October 7, 2009
Wednes-Day 1
Bio 3/6 - we finished up our discussions of the pH indicator and catalase enzyme activity labs.
We will begin the unit on the Cell and Cell Processes tomorrow.
AP Chem- there will be no "gas forming reaction" descriptive chemistry questions on tomorrow's exam. You are still responsible, though, for knowing the solubility rules and double replacement with precipitation equations (formula and net ionic).
Tomorrow's exam will have redox balancing, stoichiometry, molarity calculations, dilutions, limiting reactant, and mixture analysis questions, the same types of questions that you saw in the class notes and in the practice files (and the "ordinary" hw questions).
Today, we finished yet another redox solution stoichiometry problem in which we identified the limiting reactant as well as the final concentrations of any aqueous ions that remained.
Note: all of these calculations assume no significant REVERSE reaction. This assumption is practically true for certain reactions (gas formation, precipitate formation, neutralization) but will not hold for the reactions that we study later this year in the "equilibrium" unit.
We also discussed some of the hydrate lab questions by showing how to quantitatively (use sample calcs) and qualitatively explain unintentional and random experimental "error".
We will begin the unit on the Cell and Cell Processes tomorrow.
AP Chem- there will be no "gas forming reaction" descriptive chemistry questions on tomorrow's exam. You are still responsible, though, for knowing the solubility rules and double replacement with precipitation equations (formula and net ionic).
Tomorrow's exam will have redox balancing, stoichiometry, molarity calculations, dilutions, limiting reactant, and mixture analysis questions, the same types of questions that you saw in the class notes and in the practice files (and the "ordinary" hw questions).
Today, we finished yet another redox solution stoichiometry problem in which we identified the limiting reactant as well as the final concentrations of any aqueous ions that remained.
Note: all of these calculations assume no significant REVERSE reaction. This assumption is practically true for certain reactions (gas formation, precipitate formation, neutralization) but will not hold for the reactions that we study later this year in the "equilibrium" unit.
We also discussed some of the hydrate lab questions by showing how to quantitatively (use sample calcs) and qualitatively explain unintentional and random experimental "error".
# posted by C @ 1:50 PM 
