Light p.2 Flashcards
1
Q
Colour of photon
A
Frequency not wavelength. When light passes through a medium the wavelength changes but not the colour of eg a laser
2
Q
Black body radiation
A
Black body is a theoretical object that absorbs all light. Spectral radiance will not increase indefinitely.
Planck proposed quantisation
Atom becomes ionised if enough energy is provided.
3
Q
photoelectric effect
A
Light’s ability to eject an electron is dependent on its frequency not its intensity.
E=hv
4
Q
The Bohr model
A
The potential energy of an electron in a hydrogen atom is also quantised, eg electron inhabit certain energy levels.
5
Q
Molecular energy levels
A
sigma bond is lowest level
then pi bond higher energy level
6
Q
A
