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Chem Unit 2
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Z is
atomic number
Isotopes
atoms of same element with different masses
Avogadro's number
23
6.02* 10
Electromagnetic radiation
radio waves, microwaves, x rays, etc
Electromagnetic specturm
arranged from a long to short wavelength or low to high frequencies
Wavelength
distance between corresponding points
Frequency (v)
number of waves that pass a given point at a specific time
quantum
minimum quantity of energy that can be lost or gained by atom
photoelectric effect
emmision of electroms from metal when light is shined on it
electromagnectic radiation strikes the surface of metal...
...ejecting electrons from the metal, causing electrical current
photon
particle of electromagnetic radiation having zero mass
emission
electron falls to a lower energy level
absorption
energy added to atom to move electron from lower to higher energy level
diffraction
bending of waves
interference
waves overlap
Heisenberg Uncertainty Principle
impossible to determine simultaneously the position and velocity of electrons or other particles
Aufbau principle
electron occupies lowest energy orbital that can recieve it
Pauli exclusion principle
no more than 2 electrons can occupy the same orbital
Author
littlelacilouwho
ID
110467
Card Set
Chem Unit 2
Description
chem unit 2 yay
Updated
10/20/2011, 4:25:09 AM
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