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Chapter 5 Vocabulary
vocab
Question | Answer |
---|---|
Wavelength | is the shortest distance between equilvalent points on a continuous wave. |
Frequency | is the number of waves that pass a given point per second. |
amplitude | is the wave's height from the orgin to a crest, or from the orgin to a trough. |
electromagnetic spectrum | encompasses all forms of electromagnetic radiation. |
quantum | is the minimum amount of energy that can gained or loss by a atom. |
Planck's constant | 6.626 X 10 -34 J X s where J is the symbol for the joule |
photoelectric effect | electrons called photoelectrons are emitted from a metal's surface when light of a certrain frequency shines on a surface. |
photon | is a particle of the electromagnetic radiation with no mass that carries the quantum energy. |
atomic emission spectrum | is the set of frequency's 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 a wave characteristics. |
Heisenberg uncertainty principle | states that it is fundementally impossible to know precisely both the velocity and position of a particle at the same time. |
quantum mechanical model of an atom | an atomic model in which elecrtrons are treated as waves. |
atomic orbital | A three dimensional region around the nucleus. |
principle quantum numbers | that indicates the relative sizes and energies of atomic orbitals. |
principle energy levels | the major energy levels of an atom. |
energy sublevels | the energy levels contained within a principle energy level. |