Monday, November 21, 2011
Mon-Day 2
AP Chem - I need everybody to get on board with proper test-taking skills; for six tests now, people are still not underlining/highlighting/USING keywords and data from the questions leading to a complete waste of time and effort of answering questions that do NOT EXIST. Even worse, when you rehearse a memorized answer that is not asked, you are showing a lack of effort in trying to UNDERSTAND the concept involved.
Chemistry is the most visual of all the sciences. That is why drawing what is happening in a given question must lead you to a correct or, at least, logical answer; you should start all explanations with a labeled sketch that you constantly refer to as part of your logical, detailed answer.
Today we reviewed the causes of the trend in atomic size across a period from left to right.
We then defined first ionization energy and applied the three causal factors of all periodic trends to explain the general increase in first IE from left to right across a period.
We saw that there were two anomalies in this trend per period; to explain these two anomalies, the accuracy and precision of the quantum atomic model is required.
We briefly went through the first anomaly that is explained by shielding (from nuclear charge) of p orbital electrons by s orbital electrons of the same shell/PEL.
I have posted yet another practice quantum sheet on Edline; you have an exhaustive amount of information from which you have studied for the past two weeks.
Be sure to make an effort to improve your qualitative explanations BEFORE tomorrow's exam.
Bio - took the Transcription, Translation, Mutation exam.
Multiple choice results look very good! --> 94% correct.
Chemistry is the most visual of all the sciences. That is why drawing what is happening in a given question must lead you to a correct or, at least, logical answer; you should start all explanations with a labeled sketch that you constantly refer to as part of your logical, detailed answer.
Today we reviewed the causes of the trend in atomic size across a period from left to right.
We then defined first ionization energy and applied the three causal factors of all periodic trends to explain the general increase in first IE from left to right across a period.
We saw that there were two anomalies in this trend per period; to explain these two anomalies, the accuracy and precision of the quantum atomic model is required.
We briefly went through the first anomaly that is explained by shielding (from nuclear charge) of p orbital electrons by s orbital electrons of the same shell/PEL.
I have posted yet another practice quantum sheet on Edline; you have an exhaustive amount of information from which you have studied for the past two weeks.
Be sure to make an effort to improve your qualitative explanations BEFORE tomorrow's exam.
Bio - took the Transcription, Translation, Mutation exam.
Multiple choice results look very good! --> 94% correct.
# posted by C @ 9:33 AM 
