# OSU CH 201 Ch3

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1. Electromagnetic spectrum
the range of different kinds of electromagnetic radiation
2. Electricmagnetic energy
is characterized by a frequency, a wavelength, and an amplitude
3. Frequency (ν "nu" )
the number of wave maxima that pass by a fixed point per unit time.
4. Hertz (Hz)
a unit of frequency; 1Hz = 1s^-1
5. Wavelength (lambda)
the length of a wave from one maximum to the next (Section 3.1)
6. Amplitude
a wave's height measured from the midpoint between peak and trough
7. wavelength equation
• Wavelength * Frequency = Speed of light
• "lambda"(m) * "nu"(Hz) = c (m/s)
• rewritten
• "lambda" = c / "nu"
• or
• "nu" = c / "lambda"
8. Line spectrum
the wavelengths of light emitted by an energetically excited atom
9. Balmer–Rydberg equation
an equation that accounts for all lines in the hydrogen spectrum

1 / "lambda" == R(oo) ((1/m^2) - (1/n^2))

R(oo) = Rydberg constant == 1.097*10^-2 nm^-1
10. Photon
the smallest possible amount of radiant energy; a quantum
11. photon energy equation
E = h*"nu" == hc/"lambda"

• h = plack's constant: 6.626*10^-34
• c = speed of light: 3.00*10^8
6.022*1023 unit of mole.
13. joule
• is a unit of energy
• 1 j = 1(kg/m2)/s2
14. the intensity of a light beam is a measure
of the number of photonsin the beam
15. a measure of energies of the photons
frequency
16. Quantum
the smallest possible amount of radiant energy
17. de Broglie equation
• an equation that relates mass, wavelength, and velocity, m = h/λν
• λ = h/mν
• m: mass
• h: placks constant
18. Quantum mechanical model
a model of atomic structure that concentrates on an electron's wavelike properties
19. Heisenberg uncertainty principle
• The position and the velocity of an electron can never both be known beyond a certain level of precision
• (change in x"position")(Change in Mass "nu") => h / 4"pie"
 Author: Rayen ID: 43154 Card Set: OSU CH 201 Ch3 Updated: 2010-10-18 23:28:20 Tags: OSU CH201 Folders: Description: Osu Ch 201 Show Answers: