Chemistry Chapter 5 Vocab

Ch. 5 Electro ns in&nb

24 cards   |   Total Attempts: 182
  

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