OSU CH 201 Ch3
Home > Flashcards > Print Preview
The flashcards below were created by user
Rayen
on
FreezingBlue Flashcards. What would you like to do?

Electromagnetic spectrum
the range of different kinds of electromagnetic radiation

Electricmagnetic energy
is characterized by a frequency, a wavelength, and an amplitude

Frequency (ν "nu" )
the number of wave maxima that pass by a fixed point per unit time.

Hertz (Hz)
a unit of frequency; 1Hz = 1s^1

Wavelength (lambda)
the length of a wave from one maximum to the next (Section 3.1)

Amplitude
a wave's height measured from the midpoint between peak and trough

wavelength equation
 Wavelength * Frequency = Speed of light
 "lambda"(m) * "nu"(Hz) = c (m/s)
 rewritten
 "lambda" = c / "nu"
 or
 "nu" = c / "lambda"

Line spectrum
the wavelengths of light emitted by an energetically excited atom

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

Photon
the smallest possible amount of radiant energy; a quantum

photon energy equation
E = h*"nu" == hc/"lambda"
 h = plack's constant: 6.626*10^34
 c = speed of light: 3.00*10^8

Avogadro's number
6.022*1023 unit of mole.

joule
 is a unit of energy
 1 j = 1(kg/m^{2})/s^{2}

the intensity of a light beam is a measure
of the number of photonsin the beam

a measure of energies of the photons
frequency

Quantum
the smallest possible amount of radiant energy

de Broglie equation
 an equation that relates mass, wavelength, and velocity, m = h/λν
 λ = h/mν
 m: mass
 h: placks constant

Quantum mechanical model
a model of atomic structure that concentrates on an electron's wavelike properties

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"