Energy levels and photon emission Flashcards
1
Q
What happens passing light through diffraction grating
A
line spectrum of discrete values of wavelength
2
Q
What does the line spectrum show
A
photon energies emitted correspond to the given wavelength
(proof of electron excitation and dexciation)
3
Q
What is the change in energy equation
A
E(change) = E1 - E2
hf = E1-E2
4
Q
What evidence is there that light acts as a wave
A
diffraction and interference
5
Q
What evidence is there that light acts as a particle
A
photoelectric effect
6
Q
What evidence is there that an electron acts as a wave
A
electron diffraction
7
Q
What is the de broglie wavelength equation
A
Wavelength = h/mv
8
Q
What happens if momentum increases
A
wavelength decreases
diffraction decreases
pattern is closer.
9
Q
What must scientists do with findings to become validated
A
peer - review
