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Chapter 5 Vocabulary

Chapter 5 Vocabulary - Light, Electrons, etc

Electromagnetic Radiation a form of energy that exhibits wavelike behavior as it travels through space.
Wavelength the shortest distance between equivalent points on a continuous wave.
Frequency The number of waves that pass a given point per second.
Electromagnetic spectrum Encompasses all forms of electromagnetic radiation, with the only differences in the types of radiation being their frequencies and wavelengths.
Amplitude a wave's height from the origin to the crest, or from the origin to the trough.
Quantum the minimum amount of energy that can be gained or lost by an atom.
Photoelectric Effect electrons, called photoelectrons, are emitted from a metal's surface when light of a certain frequency shines on the surface.
Photon 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 states of an atom.
de Broglie Equation predicts that all moving particles have a wave characteristics.
Heisenberg Uncertainty 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 electrons are treated as waves is called the wave mechanical model of the atom.
Atomic Orbital a three-dimensional region around the nucleus that describes an electrons probable location.
Principal Quantum Number indicates the relative sizes and energies of atomic orbitals.
Electron Configuration the arrangement of electrons in an atom.
Aufbau Principle states that each electron occupies the lowest energy orbital available.
Pauli Exclusion Principle states that a maximum of 2 electrons may occupy a single atomic orbital.
Hund's Rule states that single electrons with the same spin must occupy each equal-energy orbital before additional electrons with opposite spin can occupy the same orbitals.
Electron-Dot Structure consists of the element's symbol, which represents the atomic nucleus and inner-level electrons, surrounded by dots representing the atoms valence electrons.
Created by: Silvs216



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