Tuesday, June 14, 2011

Chemistry Randos

HIGHER THE BOND ENERGY, SHORTER THE BOND (inverse)

Bond length is also inversely related to bond strength and the bond dissociation energy, as a stronger bond is also a shorter bond, however, there are also few exceptions (Ex, H-H and H-O, the latter one has longer and stronger bond).


SPECIFIC HEAT (Heat Capacity, C)

***"the amount of energy required to raise 1g of that substance by 1 degree Celsius"

- larger the value, harder it is to raise the temp (ex: wood's 2.1 > mercury's 0.1)

Log rules...ugggggh

loga x = N means that aN = x.

"Log(5) for example is saying that 10 raised to [log(5)] equals 5.

So log(5) = 0.69897 because 10^0.69897=5"

The Doppler Effect

Coolest http://www.youtube.com/watch?v=-t63xYSgmKE

Monday, June 13, 2011

Extreme Physics...

Spatial Resolution: The ability to located an event in space
ex: This can be determined from "the spacing of the anode wires"
(translational motion)

Hydrostatic pressure is what is exerted by a liquid when it is at rest. The height of a liquid column of uniform density is directly proportional to the hydrostatic pressure.

PRESSURE IN A LIQUID IS PROPORTIONAL TO THE HEIGHT OF THE LIQUID ABOVE IT (p = density x g x h)








ex: Greater arterial pressure in leg than arm "because the column of blood between the arm and leg has a hydrostatic pressure"

Redox Counterintuition

Oxidizing Agent

GAINS e-s in rxn

Nycs Bull Trans R Clip Art

Reducing Agent

LOOSES e-s in rxn



Lowest Freezing Point (makes no sense but remember)

The solution with the HIGHEST concentration of particles (CaCl2, NOT NaCl) will have the LOWEST freezing point.


Higher Ksp means MORE soluble…

Saturday, June 11, 2011

Vacuum

...a volume of space EMPTY of matter...

- RADIATION can happen in a vacuum
- Convection and Conduction CANNOT happen in a vacuum
- ELECTROMAGNETIC WAVES can travel through a vacuum (speed is constant!)