Spectroscopy

LEQs:What is the relationship between the

types of energy in the electromagnetic spectrum and their frequency and wavelength?

How does energy change impact the transition of electrons between energy levels?

Emission/absorption of energy by electrons

Absorb: move from lower to higher energy level

Emission: move from higher to lower energy level

Uses: Fireworks, Astronomy

Equations:E=hv

E: energy---measured in Joules(J)h: Planck’s constant 6.626 x 10-34

v: frequency—measured in Hertz (Hz)

c=λ v

c: speed of light: 3.00 x 108 m/sλ: wavelength: measured in meters (m)v: frequency

Ex: What is the energy content of a photon of light with a frequency of 5.3 x 1014 Hz?

EX: What is the frequency of a photon of light with a wavelength of 450 nm?

Ex: What is the energy content of a photon with a wavelength of 6.2 x 10-7 m?