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26 Cards in this Set
- Front
- Back
Frequency
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# of waves that pass a given point per second
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Electromagnetic Radiation
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form of energy that exhibits wavelike behavior as it stands through space
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wavelength
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Shortest distance between equivalent points on a continuous wave
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electromagnetic spectrum
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encompasses all forms of electromagnetic radiation
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Quantum
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The minimum amount of energy that can be gained or lost by an atom
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Planck
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founded Quantum proposed that emmitted light was quantized.
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photoelectric Effect
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electrons, called photoelectrons, arc emitted from a metal's surface when light of a certain frequency shines on the surface
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Einstein
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electromagnetic radiation is both wavelike and particle-like
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Photon
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particle of electromagnetic radiation with no mass that came a quantum of energy
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Atoms Emission Spectrum
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the set of frequencies of the electromagnetic waves emitted by atoms of the element
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ground state
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lowest allowable energy state of an atom
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de Broglie equation
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predicts that all moving particles have wave characteristics
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Heisenberg uncertainty principle
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fundamentally impossible to know precisely both the velocity and position of a particle at the same time
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atomic orbital
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3 dimensional region around the nucleus
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principal quantum numbers
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indicates the relative sizes and energies of atomic orbitals
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electron configuration
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arrangement of electrons in an atom
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Pauli exclusion priciple
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the maximum of two electons may occupy a single atomic orbital, but only if the electrons have opposite spins
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Hund's rule
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single electrons with the same spin must occupy each equal-energy orbital before additional electrons with opposite spins can occupy the same orbitals
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principle energy levels
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major energy levels of an atom
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energy sublevels
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energy levels contained within a principal energy level
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aufbau principle
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each electron occupies the lowest energy orbital available
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valence electrons
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electrons in an atom's outermonst orbitals; determine the chemical properties of an element
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electron-dot structure
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consists of an element's symbol, representing the atomic nucleus and inner-level electrons, hat is surrounded by dots, representing the atom's valence electrons
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Balmer series
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electron morning from higher energy kids to the 2nd orbit = series of visible lines.
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Lynman Series
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electron drop into n=1=UV
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Paschen Series
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electron drop into n=3=infrared
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