Thursday, September 17, 2009
Thurs-Day 2
Bio 3/6 - we reviewed microscopy and did a couple of quantitative examples involving measurement of cell length, conversion of low power field of view to high power field of view, and conversion of millimeters to micrometers.
We discussed the test format so that you know the structure of the test as well as how to answer graphing and scientific investigation questions.
I'm about to upload to blackboard a couple of tutorial videos on graphing and the scientific method. I think that you will find them helpful.
I have also posted some tried and true test-taking skills advice. The file is on Blackboard. Be sure to consistently follow those rules and you will guarantee a higher score! Following these techniques requires effort but ultimately they make the tests easier and more manageable.
AP Chem- we finished our percent composition to empirical formula problem and then went on to the next logical step of determining the molecular formula, given the molar (gram formula) mass data. We calculated the "scaling factor", ALWAYS a whole number (otherwise you had made a previous error!) that multiplies the subscripts of the empirical formula.
We then did a percent composition to empirical formula problem involving a HYDRATED salt.
Finally, we discussed combustion analysis and did a problem involving analyzing the masses of the combustion products, CO2 and H2O, in order to determine the empirical formula of the combusted unknown organic compound.
We discussed the test format so that you know the structure of the test as well as how to answer graphing and scientific investigation questions.
I'm about to upload to blackboard a couple of tutorial videos on graphing and the scientific method. I think that you will find them helpful.
I have also posted some tried and true test-taking skills advice. The file is on Blackboard. Be sure to consistently follow those rules and you will guarantee a higher score! Following these techniques requires effort but ultimately they make the tests easier and more manageable.
AP Chem- we finished our percent composition to empirical formula problem and then went on to the next logical step of determining the molecular formula, given the molar (gram formula) mass data. We calculated the "scaling factor", ALWAYS a whole number (otherwise you had made a previous error!) that multiplies the subscripts of the empirical formula.
We then did a percent composition to empirical formula problem involving a HYDRATED salt.
Finally, we discussed combustion analysis and did a problem involving analyzing the masses of the combustion products, CO2 and H2O, in order to determine the empirical formula of the combusted unknown organic compound.
# posted by C @ 3:08 PM 
