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26 Cards in this Set
- Front
- Back
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Electromagnetic radiation
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visible light, x-rays, microwaves, radio waves, etc.
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Frequency (v, nu)
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Number of cycles per second (Hz)
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Wavelength (lambda)
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Distance between wave peaks
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Speed of light formula
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c = v * (lambda)
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Refraction
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The phenomenon that occurs when a wave passes from one medium into another; the wave is bent at an angle
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Diffraction
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The phenomenon in which a wave bends around the edge of an object
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Quantum number
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A positive integer 'n' used in Planck's formula of blackbody radiation
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Plank's constant
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h = 6.626 x 10^(-34) (J)(s)
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Quantum (noun)
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a "packet" of energy
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Photon
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a "particle" of light
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Lines spectrum
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A series of fine lines of individual colors separated by colorless (black) spaces
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Stationary states
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Certain allowable energy levels, associated with a fixed circular orbit of the electron around the nucleus
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de Broglie wavelength
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(lambda) = (h)/(m * u)
states that matter behaves as though it moves in a wave |
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Heisenberg Uncertainty Principle
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Priciple which states that it is impossible to know simultaneously the exact position and momentum of a particle
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Schrödinger equation
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The basis for the quantum-mechanical model of the hydrogen atom, describing an atom that has certain allowed quantities of energy due to the allowed wavelike motion of an electron whose exact location is impossible to know
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Quantum mechanics
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a field which examines the wave motion of object on the atomic scale
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Electron density diagram
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predicts the probability that an electron is at a particular point
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Probability contour
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shows the volume within which the electron of the hydrogen atom spend 90% of its time
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principal quantum number (n)
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a positive integer that indicates the relative SIZE of the orbital and therefore the relative DISTANCE FROM THE NUCLEUS of the peak in the radial probability distribution plot.
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angular momentum quantum number (l)
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integer from 0 to n-1, related to the SHAPE of the orbital
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magnetic quantum number (m (sub)l)
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and integer from -l through 0 to +l; describes the ORIENTATION of he orbital in the space around the nucleus
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Levels (shells)
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given by the n value
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Sublevels (subshells)
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Designate the orbital shape
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s Orbital
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Spherical shape
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p Orbital
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dumbbell-shape
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d Orbital
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cloverleaf shape
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