| Question |
Answer |
| electromagnetic radiation | a form of energy exhibiting 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 |
| 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 |
| quantum | the minimun amount of energy that can be gained or lost by an atom |
| Planck's constant | which has a value of 6.626x10-34 J.s , where J is the synbol for the joule |
| photoelectric effect | a phenomenon in which 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 | 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 equation | predicts that all moving particles have wave characteristics and relates each particle's wavelength to its frequency, its mass, and Planck's constant |
| Heisenberg uncertainty principle | states that it ia 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 sizes and energies of atomic orbitals |
| principal energy level | the major energy levels of an atom |
| energy sublevel | the energy levels contained within a principal energy level |
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