Wednesday, September 22, 2010
Wednes-Day 2
Physics - the emergency lockdown drill pre-empted our multiple choice exam so we will take both parts of the exam during the double period tomorrow.
Be prepared to work and check your answers for at least 70 of the 85 minutes of test time. I will collect the test only after the 70 minute mark, though I will usually collect a test only at the end of a period. Part of good test-taking skills is to assume that you made a few careless mistakes during your first run-through of an exam, and then to find and correct them. Do not change an original answer unless you KNOW that you misread the question or made some other clear-cut error.
You'll find this practice can only help you and never hurt you.
Thanks.
AP Chem - we discussed the basis of atomic mass and did isotope calculations (to be done first thing in 5th period tomorrow); we then did percent composition problems and looked at the "magic triangle of moles, grams, and liters (any condition).
We really got into quantitative AP Chem by figuring out how to go from percent composition to empirical formula. We will do more of those problems tomorrow.
Be prepared to work and check your answers for at least 70 of the 85 minutes of test time. I will collect the test only after the 70 minute mark, though I will usually collect a test only at the end of a period. Part of good test-taking skills is to assume that you made a few careless mistakes during your first run-through of an exam, and then to find and correct them. Do not change an original answer unless you KNOW that you misread the question or made some other clear-cut error.
You'll find this practice can only help you and never hurt you.
Thanks.
AP Chem - we discussed the basis of atomic mass and did isotope calculations (to be done first thing in 5th period tomorrow); we then did percent composition problems and looked at the "magic triangle of moles, grams, and liters (any condition).
We really got into quantitative AP Chem by figuring out how to go from percent composition to empirical formula. We will do more of those problems tomorrow.
# posted by C @ 1:55 PM 
