Monday, November 27, 2006

 

Back to Play

It has been a while; welcome back everyone! Thanks for staying awake on a low-sleep day.

AP: The test today was one of the longest of the year but, if you did well, you covered a lot of ground and set the table for our bonding unit. The empirical formula lab critical thinking responses were pretty weak, on average, so set aside some time to go over those questions at extra help. Of course, we could have WORKED THROUGH the assignment at extra help before you handed it in so that you would have received full credit. That is going to be well worth the time for many of you next time. More importantly, you will see these questions on your AP exam; specifically, questions that involve an experimental error and its influence on the calculated results. You need to become expert at those; that takes time and effort because these questions involve the highest level of thinking/analysis.

Regents: we tied some loose ends and did some review for WEDNESDAY's COMPREHENSIVE Periodic Table unit exam. In fact, I have a couple of more loose ends to add tomorrow so that every possible question type that can appear on the Regents has been covered.
We introduced the new and MOST IMPORTANT unit in all of chemistry: Chemical Bonding and Attractions. You will see that this unit is the CULMINATION (THAT is the word that I was looking for in class today!) of the past two units on atomic structure and the periodic table. Good times.
Your Thanksgiving Assignment is due tomorrow in class.


Honors: we thoroughly discussed the factors that cause the trends in atomic size across a period and down a group. We also compared and explained the relative sizes of atoms and the stable ions that typically form from the atoms as a result of chemical reactions. Tomorrow, we will cover more trends and, you will notice, that we use the same factors and, often, the same explanations for each of the trends.



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