Friday, November 19, 2010
Fri-Day 1
Physics - finished up our spring constant lab - we'll finalize our answers during the next lab session.
We introduced circular motion, emphasizing that an object moving in a circle is ALWAYS accelerating towards the CENTER of the circle (its centripetal acceleration) and this acceleration is caused by some force (due to friction, gravity, tension in a rope, or some other source) that causes centripetal force towards the center of the circle.
We looked at the various formulas involved. We will solve circular motion problems on Monday and Tuesday.
AP Chem - we explained the relative sizes of atoms and their corresponding common stable ions by showing the effects of the three factors that cause all periodic trends and chemical phenomena: Zeff on the valence electrons, the number of OPEL's, and the degree of electron-electron repulsion in the valence shell.
We then began to compare the sizes of an isoelectronic series of species.
Be sure to peruse the explanations of ALL periodic trends as written out in the notes posted on Blackboard/handed out in class.
We introduced circular motion, emphasizing that an object moving in a circle is ALWAYS accelerating towards the CENTER of the circle (its centripetal acceleration) and this acceleration is caused by some force (due to friction, gravity, tension in a rope, or some other source) that causes centripetal force towards the center of the circle.
We looked at the various formulas involved. We will solve circular motion problems on Monday and Tuesday.
AP Chem - we explained the relative sizes of atoms and their corresponding common stable ions by showing the effects of the three factors that cause all periodic trends and chemical phenomena: Zeff on the valence electrons, the number of OPEL's, and the degree of electron-electron repulsion in the valence shell.
We then began to compare the sizes of an isoelectronic series of species.
Be sure to peruse the explanations of ALL periodic trends as written out in the notes posted on Blackboard/handed out in class.
# posted by C @ 11:32 PM 
