Light is a form of ___________
height of a wave measured from origin to peak
distance between successive peaks of a wave
how fast a wave oscillates up and down.
speed at which light moves through space. 3.00x10^8 m/s
Frequency measure unit
Hertz(Hz) - 1 s^-1
gamma rays, x-rays, ultraviolet, visible(10^-7), infrared, microwaves, TV, radio(purple to red)
the array of colors seen at different light wavelengths.
As a metal is heated, it emits heat, and then ________
predicted how spectrum of radiation emitted changes with temp./|/| Planck proposed that energy is released in small steps, each called quantums.
energy quanta is _________ to be seen in the everyday world
electrons are ejected from face of a metal when light shines on the metal.
proposed the photoelectric effect.
demonstrated that a photon could collide with an electron
light has a dual nature, possessing the properties of _______ and _______
a spectrum that contains only certain colors or wavelengths
Bohr's theory, planetary model. Each energy level labeled,
lowest energy level
ground state, n=1
n=any more than 1
Uncertainty Principle, sates that position and momentum of a moving object cannot simultaneously be measured and known exactly.
density of an electron cloud
orbitals: s, p, d, f
1, 3, 5, 7
stairs, each stair is a burst of energy