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Chemistry Vocab

5.1 & 5.2

Electromagnetic Radiation A form of energy exhibiting wavelike behavior as it travels through space.
Wave Length The shortest distance between equialent points on a continuous wave.
Frequency The number of waves that pass a given point per second.
Amplitude The height of a wave from the origin to a crest, or from the origin to a trough.
Electromagnetic Spectrum Includes all forms of electromagnetic radiation, with the only difference in the types of radiation being their frequencies and wavelengths.
Quantum The minimum amount of energy that can be gained or lost by an atom
Planck's Constant H,which has a value of 6.626X10^-34 J's, where J is the symbol for the jouls.
Photoelectric Effect A phenomenon in which photoelectrons are emitted from a metal's surface then 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.
Ground State The lowest allowable energy state of an atom.
De Broglie Quation Predicts that all moving particles have wave characteristics and relates each particle's wave length to its frequenc, its mass, and Planck's constant.
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 Orbital A three-dimensional region around the nucleus of an atom that describes an electron's probable location.
Principal Quantum Number Which the quantum mechanical model assigns to indicate the relative sites and energies of atomic orbitals.
Pincipal Energy Level The major energy levels of an atom.
Energy Sublevel The levels contained within a principal energy level.
Created by: kendra_2010