Thursday, December 2, 2010
Thurs-Day 1
Physics - took part 2 of our Unit 5 exam.
Began work on our "Work and Energy" unit by establishing their relationship, and reasoning through potential energy as the potential to do work; we did a few of the work= force x distance problems in units of N-m or Joules.
Began work on our "Work and Energy" unit by establishing their relationship, and reasoning through potential energy as the potential to do work; we did a few of the work= force x distance problems in units of N-m or Joules.
AP Chem - this just came up at extra help: as you write EACH LINE of an explanation, picture me writing/saying, "YOU ARE WRONG; YOU ARE LYING, THE OPPOSITE IS TRUE", and THEN prove ME wrong by stating how and why I am wrong by stating your evidence/ drawing/ showing your mechanism! This way, you are proving your case, making a thorough, sufficient argument for your explanation.
Try it!
Also, you should BEGIN YOUR EXPLANATION with a COMPLETE DRAWING AND/OR DIAGRAM that is LABELED and REFERENCED (simply by drawing ARROWS TO THE DRAWINGS OR DIAGRAMS) throughout the explanation.
On tomorrow's exam, expect questions on:
- explanation of periodic trends down groups or across periods in order of increasing atomic number in terms of
1.Zeff on valence electrons,
2.# of OPEL's, and
3.degree of e- - e- repulsion among electrons in the valence or outermost shell.
- explanation of any given periodic anomaly (e.g. ionization energy, electron affinity); the anomaly will be GIVEN. Remember, you cannot predict anomalies, but they can be explained.
- explanation of successive ionization energies, and their relation to determining the number of valence electrons of an element
- explanation of relative sizes of a series of atoms and/or ions
- explanation of the increasingly endothermic successive electron affinity
- general differences between metals and non-metals
- knowledge of the approximate/exact electronegativity values of the 11 non-metals
- predict the products of our known chemical reaction types (anionic/cationic single replacement, double replacement with precipitation, etc.)
- some organic naming and formula writing and drawing
We've entered the glorious Bonding and IMFA Unit, the culmination of the Atomic Structure and Periodicity units. Now, we'll actually be able to logically DO/infer something with all of that Zeff and OPEL knowledge (without which, this unit is a bunch of random, arbitrary coincidences...good luck with all that).
:)
Today, we learned the concrete skill of drawing PROPER/CORRECT Lewis Structures for molecules and ions. This fundamental skill will allow us to see and then predict molecular structures/geometry, molecular polarity, and the types of intermolecular attractions for any given molecule. Suffice is to say that knowing how to draw these structures quickly EVERY time is crucial to success in understanding this unit.
On tomorrow's exam, expect questions on:
- explanation of periodic trends down groups or across periods in order of increasing atomic number in terms of
1.Zeff on valence electrons,
2.# of OPEL's, and
3.degree of e- - e- repulsion among electrons in the valence or outermost shell.
- explanation of any given periodic anomaly (e.g. ionization energy, electron affinity); the anomaly will be GIVEN. Remember, you cannot predict anomalies, but they can be explained.
- explanation of successive ionization energies, and their relation to determining the number of valence electrons of an element
- explanation of relative sizes of a series of atoms and/or ions
- explanation of the increasingly endothermic successive electron affinity
- general differences between metals and non-metals
- knowledge of the approximate/exact electronegativity values of the 11 non-metals
- predict the products of our known chemical reaction types (anionic/cationic single replacement, double replacement with precipitation, etc.)
- some organic naming and formula writing and drawing
We've entered the glorious Bonding and IMFA Unit, the culmination of the Atomic Structure and Periodicity units. Now, we'll actually be able to logically DO/infer something with all of that Zeff and OPEL knowledge (without which, this unit is a bunch of random, arbitrary coincidences...good luck with all that).
:)
Today, we learned the concrete skill of drawing PROPER/CORRECT Lewis Structures for molecules and ions. This fundamental skill will allow us to see and then predict molecular structures/geometry, molecular polarity, and the types of intermolecular attractions for any given molecule. Suffice is to say that knowing how to draw these structures quickly EVERY time is crucial to success in understanding this unit.
# posted by C @ 1:28 PM 
