Tuesday, September 22, 2009
Tues-Day 1
Bio 3/6- we reviewed our first unit exam. Review the class notes from each day and use them to answer the hw questions and you will automatically be preparing efficiently and optimally for each test. Pay special attention to when I alert you to "common errors" made by hundreds of past students. Learn from their mistakes so that you don't make the same mistakes. If you follow the methods as taught in class, you are much less likely to make errors, and you are much more likely to answer the questions accurately and with sufficient detail.
We reviewed the two types of compounds: salts and molecules, and then we started our focus on the major organic biological molecules, starting with carbohydrates.
After the break, we broke into groups to do a scientific investigation activity in which we will critique each step of each group's process.
AP Chem- we did a reverse engineered atomic mass problem in which we calculated the percent abundance of the two isotopes of chlorine based on the atomic mass of chlorine and the individual isotope masses of chlorine-35 and chlorine-37.
We then did another gravimetric analysis problem; we solved this one by simply applying the law of conservation of mass and the percent composition formula. These specific problems usually require solving a quadratic equation.
We then began another limiting reactant problem, the solution to which is posted on Blackboard.
The list of question types for tomorrow's exam was given in class so check the Blackboard notes if you missed it.
We reviewed the two types of compounds: salts and molecules, and then we started our focus on the major organic biological molecules, starting with carbohydrates.
After the break, we broke into groups to do a scientific investigation activity in which we will critique each step of each group's process.
AP Chem- we did a reverse engineered atomic mass problem in which we calculated the percent abundance of the two isotopes of chlorine based on the atomic mass of chlorine and the individual isotope masses of chlorine-35 and chlorine-37.
We then did another gravimetric analysis problem; we solved this one by simply applying the law of conservation of mass and the percent composition formula. These specific problems usually require solving a quadratic equation.
We then began another limiting reactant problem, the solution to which is posted on Blackboard.
The list of question types for tomorrow's exam was given in class so check the Blackboard notes if you missed it.
# posted by C @ 7:35 PM 
