Friday, October 13, 2006
Friday...the 13th!
Another truncated day but at least we learned a concrete skill or two:
Honors and Regents: you were introduced to significant figures, "sig figs". Everyone seemed to catch on but I know from experience that you can forget that information if you don't practice with it. So, this weekend, I will post some sig fig practice files that have addition and multiplication of sig figs. I will finish sig figs and scientific notation on Monday; then it's back to Atomic Models. There will most likely be a test next THURSDAY. We are OFF on Wednesday so make sure that you study adequately over the weekend and also early next week.
I returned the Honors Atomic Concepts exams (some students in G still have to pick up their tests; avoiding them is not a good idea since you could have reviewed them over the weekend). I will return last week's Regents class exam on Monday.
IF YOU DID NOT DO WELL on your exam in Honors or Regents, I expect to see you at extra help correcting your mistakes and asking questions for clarification. That is why I am in 229 after school EVERY DAY; yet, very few have come to extra help even though some of you need extra help almost daily. Even if your average is low, don't make things worse by never learning the material that you should have learned by test day. Most of chemistry is cumulative so you will dig yourself into an inescapable hole if you don't correct your mistakes and eventually learn the material. At least you'll earn some credit back when you know the information on the Regents exam, otherwise you'll be going to summer school.
Now that we have the Orange Review Books, I will post some review hw and answers for you to check. Many of you still need to clarify the difference between atomic mass and mass number and to know what atomic number means. I will also post answers to the text Chapter 4 Unit questions.
AP: Just a skeletal lesson on enthalpy of formation, enthalpy of REACTION (NOT the same as FORMATION!), and Hess's Law. No joke, most students from the past two years REFUSED to put the coefficients from the balanced equation into the Hess formula. Please write out the general formula and follow it exactly; this doesn't have to be a difficult unit.
Honors and Regents: you were introduced to significant figures, "sig figs". Everyone seemed to catch on but I know from experience that you can forget that information if you don't practice with it. So, this weekend, I will post some sig fig practice files that have addition and multiplication of sig figs. I will finish sig figs and scientific notation on Monday; then it's back to Atomic Models. There will most likely be a test next THURSDAY. We are OFF on Wednesday so make sure that you study adequately over the weekend and also early next week.
I returned the Honors Atomic Concepts exams (some students in G still have to pick up their tests; avoiding them is not a good idea since you could have reviewed them over the weekend). I will return last week's Regents class exam on Monday.
IF YOU DID NOT DO WELL on your exam in Honors or Regents, I expect to see you at extra help correcting your mistakes and asking questions for clarification. That is why I am in 229 after school EVERY DAY; yet, very few have come to extra help even though some of you need extra help almost daily. Even if your average is low, don't make things worse by never learning the material that you should have learned by test day. Most of chemistry is cumulative so you will dig yourself into an inescapable hole if you don't correct your mistakes and eventually learn the material. At least you'll earn some credit back when you know the information on the Regents exam, otherwise you'll be going to summer school.
Now that we have the Orange Review Books, I will post some review hw and answers for you to check. Many of you still need to clarify the difference between atomic mass and mass number and to know what atomic number means. I will also post answers to the text Chapter 4 Unit questions.
AP: Just a skeletal lesson on enthalpy of formation, enthalpy of REACTION (NOT the same as FORMATION!), and Hess's Law. No joke, most students from the past two years REFUSED to put the coefficients from the balanced equation into the Hess formula. Please write out the general formula and follow it exactly; this doesn't have to be a difficult unit.
# posted by C @ 4:45 PM 
