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Ch4 Spectroscopy Pt1
Vocabulary
| Term | Definition |
|---|---|
| Spectroscopy | study of how atoms absorb and emit electromagnetic radiation |
| Spectroscope | instrument used to view a light source's spectrum |
| Spectrum | separation of light into its component colors |
| Spectral Line | where light in a narrow frequency has either been removed or added from a spectrum |
| Emission Spectrum | pattern of colored spectral lines where light has been added by an element in a hot gas |
| Continuous Spectrum | spectrum from a hot solid where the radiation is distributed over all frequencies with no pattern (ROYGBIV) |
| Absorption Spectrum | pattern of dark spectral lines where light has been removed by an element in a cool gas |
| Element | matter made up of one particular atom, determined by the number of protons in the nucleus |
| Kirchhoff's Laws | three rules governing the formation of different types of spectra |
| Atom | building block of all matter, a nucleus of protons (and neutrons) surrounded by electrons |
| Bohr Model | first theory of the hydrogen atom's structure with electron energy levels |
| Electron Cloud | system of electrons surrounding the nucleus of an atom |
| Electron State | corresponds to the energy level of an electron (a.k.a. an orbital) |
| Ground State | lowest energy level that an electron can have in an atom |
| Excited State | when one of an atom's electrons is in a higher energy orbital than the ground state |
| Lyman Series | hydrogen spectral series of transitions to the lowest energy level of an electron (ground state), emitting UV light |
| Balmer Series | hydrogen spectral series of transitions to the second lowest energy level of an electron (first excited state), emitting visible light |
| Photoelectric Effect | emission of an electron from a metal surface when a photon of EM radiation is absorbed |
| Electron | elementary particle of an atom with a negative electric charge |
| Proton | elementary particle of an atom with a positive electric charge |
| Neutron | elementary particle of an atom with a neutral electric charge (0) |
| Particle | a body with mass but having negligible size |
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john_bailey720
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