Electromagnetic Radiation And Atomic Spectra Flashcards
What is meant be the range of different wavelengths arranged in order from lowest to highest
Electromagnetic spectrum
What in the wavelengths of visible light measured in
nm
What is the stream of particles that is absorbed or emitted by electromagnetic radiation?
Photons
When a photon is absorbed, is energy gained or lost?
Gained
When a photon is emitted, is energy gained or lost?
Lost
Higher frequency radiation can transfer higher amount of…
Energy
When energy is transferred to electrons, what happens?
They are promoted to higher energy levels
What is the evidence for energy levels
Light energy emitted by an atom produces a spectrum of discrete lines.
How is an absorption spectrum produced
Measuring the intensity of absorbed light varies with wavelength
How are electrons excited
High temperatures
When electrons move down energy levels, what are produced
Photons
How is the emission spectrum produced
Measuring the intensity of emission at different wavelengths
What type of waves do electron acts like in an atom
Stationary wave
