Thursday, March 10, 2011
Thurs-Day 2
Physics - demonstated standing waves, and observed the inversely proportional relationship between wavelength and frequency of a wave of a given speed. We also noted the node (equilibrium) positions and antinodes (maxima and minima) of the standing wave.
We then saw the rigid boundary inversion of a reflected wave, and the loose/moving boundary reflection that maintains the same direction/height of the pulse's amplitude.
We then saw the rigid boundary inversion of a reflected wave, and the loose/moving boundary reflection that maintains the same direction/height of the pulse's amplitude.
AP Chem - finished the explanation of acid strength based on bond polarity and bond strength; we saw that as the electronegativity of the central atom in an oxoacid increased, the O-H bond polarity increased, causing the acid strength to increase. We also saw that, the greater the number of electron attracting O atoms bonded to the central atom, the more polar the O-H bond, thus the greater the acid strength.
We then discussed salts that yield SLIGHTLY acidic or basic solutions because BOTH cation and anion could hydrolyze/ionize water.
We then began pH calculations for acidic and basic salts.# posted by C @ 1:32 PM 
