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Electromagnetic Radiation
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A form of energy exhibiting wavelike behavior as it travels through space; can be described by wavelength, frequency, amplitude, and speed and includes visible light, microwaves, X rays, and radio waves.
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Wavelength (λ)
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Distance between points on two consecutive waves.
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Frequency (ν)
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The number of waves that hit this point in one second.
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Amplitude
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The intensity of a wave.
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Electromagnetic Spectrum
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Includes all forms of electromagnetic radiation,with the only differences between the types of radiation being their frequencies and wavelengths.
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Quantum
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The minimum amount of energy (in Joules) that can be gained or lost by an atom.
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Planck’s Constant
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H = 6.63 x 10-34 J*s
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Photoelectric Effect
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A phenomenon in which photo electrons are emitted from a metal's surface when light of a certain frequency shines on the surface.
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Photon
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A particle of electromagnetic radiation with no mass that carries a quantum of energy.
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Atomic Emission Spectrum
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A set of frequencies of electromagnetic waves given off by atoms of an element; consists of a series of fine lines of individual colors.
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Ground State
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Electrons in their lowest allowable energy levels are in ther _____________.
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De Broglie Equation
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The velocity of a mass, mv, is a particle property, whereas λ is a wave property or λ=h/mv.
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Heisenberg Uncertainty Principle
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States that it is not possible to know precisely both the velocity and the position of a particle at the same time.
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Quantum Mechanical Model of the Atom
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An atomic model in which electrons are treated as waves.
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Atomic Orbitals
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A three-dimensional region around the nucleus of an atom that describes an electron's probable location.
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