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chapter 5-1&5-2 voc.

definitions

QuestionAnswer
electromagnetic radiation a form of energy that exhibits wavelike behavior as it travels through space
wavelength shortest distance between epuivalent points on continuous wave
frequency the number of waves that pass a given point per second
amplitude the wave's height from the origin to a crest, or from the origin to a trough
electromagnetic spectrum ecompasses all forms of electromagnetic radiation, with the only differences 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 has a value of 6.626 X 10^-34 J X s, where J is the symbol for joule, th SI unit of energy
photoelectric effect photoelectrons 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 the set of frequencies of the electromagnetic waves emitted by atoms of the element
ground state the lowest allowable energy state of an atom
de Broglie equation predicts that all moving particles have wave characteristics
Heisenberg uncerainty principle states that it is fundamentally impossible to know precisely both the velocity and position of a particle at the same time
quantum mechanical model of the atom the atomic model in which electroms are treated as waves
atomic orbital a three-dimensional region around the nucleus
pricipal qhantum numbers indicates the relative sizes and energies of atomic orbitals
principal energy levels atoms major energy levels
energy sublevels energy levels within principle energy levels
Created by: kalanj.