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chemistry ch.5
chemistry
Question | Answer |
---|---|
a form of energy that exhibits wavelike behaveior as it travels through space | electromagnetic radiation |
the shortest distance between equivalent points on a continuous wave | wavelenght |
the wave's height from the origin to a crest, or from the origin to a trough | amplitude |
also called the EM spectrum, encompasses all forms of electromagnetic radiation, with the only differences in the types of radiation being their frequencies and wavelengths | electromagnetic spectrum |
the minimum amount of energy that can be gained or lost by an atom | quantum |
has a value of 6.626 X 10-34J.s, where J is the symbol for the joule, the SI unit of energy | plank's constant |
a phenomenon in which photoelectrons are emitted from a metal's surface when light of a certain frequency shines on the surface | photoelectric effect |
a particle of elecromagnetic radiation with no mass that carries a quantum of energy | photon |
the set of freuencies of the electromagnetic waves emitted by atoms of the element | atomic emission spectrum |
the lowest allowable energy state of an atom | ground state |
predicts that all moving particles have wave characteristics and relates each particle's wavelength to its frequency, its mass, and Plank's constant | de Broglie equation |
states that it is fundamentally impossible to know precisely both the velocity and position of a particle at the same time | heisenberg uncertainty priciple |
an atomic model in which electrons are treated as waves | quantum mechanical model of the atom |
a three dimensional region around the nucleus | atomic orbital |
which the quantum mechanical model assigns to indicate the relative sizes and energies of atomic orbitals | principal quantum numbers |
the atom's major energy level | principal energy levels |
the energy levels contained within a pricipal energy level | energy sublevels |