CH 4 Light and Electronic Structure- intro chem

electromagnetic radiation

Answer: a form of energy that travels in waves- produced when charged particles vibrate relative to each other

Photons

Answer: Small increments of electromagnetic energy(often visible light

electromagnetic spectrum

Answer: all forms of electromagnetic energy ranging from low energy waves to high energy waves

visible spectrum

Answer: range of radiation our eyes can detect- makes up the colors of the rainbow low energy (red) 700mn—(violet) 370nm high energy

wavelenth

Answer: the distance from any point on a wave to an identical point on the next wave (nm) – longer the wave the lower the energy

frequency

Answer: The number of complete wavelengths that pass a point in a given time

Hertz (Hz)

Answer: cycles or waves per second, a measurement of frequency 1/s, 1s-1= hertz

Formula involving wavelength and frequency

Answer:

c= w*v. v=c/w. w=c/v
c= speed of light
w=wavelength
v= frequency

Speed of light

Answer: 3.00 x 10^8 m/s

Relating energy of a single photon to frequency

Answer:

E=hcv
E=energy
h= plancks constant
v=frenquency

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