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24 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Electromagnetic Radiation |
The radiation associated with an electric and magnetic field, it varies periodically and travels at the speed of light |
field...varies...light |
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Electromagnetic Spectrum |
All of the frequencies or wavelengths of electromagnetic radiation |
or |
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Wavelength |
The distance from any point on a wave to an identical point on the next wave |
wave |
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Frequency |
The number of cycles or vibrations per unit of time; also the number of waves produced in a given amount of time |
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Photoelectric effect |
The emission of electrons from a material when light of certain frequencies shines on the surface of the material |
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Quantum |
The basic unit of electromagnetic energy; it characterizes the wave properties of electrons. |
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Photon |
A unit or quantum of light; a particle of electromagnetic radiation that has zero rest mass and carries a quantum of energy. |
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Ground State |
The lowest energy state of a quantized system |
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Excited State |
A state in which an atom has more energy than it does at its grand state. |
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Line-emission spectrum |
A diagram or graph that indicates the degree to which a substance emits radiant energy with respect to wavelength |
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Continuous spectrum |
The interrupted broadband of all colors (wavelengths) emitted by incandescent solids |
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Heisenberg uncertainty principle |
The principle that determining both the position and velocity of an electron or any other particle simultaneously is impossible |
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Orbital |
A region in an atom where there is a high probability of finding electrons |
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Quantum Number |
A number that specifies certain properties of electrons. |
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Principal Quantum Number |
The quantum number that indicates the energy and orbital of an electron in an atom |
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Quantum Theory |
The study of the structure and behavior of the atom and of subatomic particles from the view that all energy comes in tiny, indivisible bundles |
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Angular Momentum Quantum number |
The quantum number that indicates the shape of an orbital |
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Magnetic Quantum number |
The quantum number that corresponds to the alignment of the angular momentum component with a magnetic field |
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Spin Quantum number |
The quantum number that describes the intrinsic angular momentum of a particle |
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Electron Configuration |
The arrangement of electrons in an atom |
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Aufbau principle |
Principle that states that the structure of each successive element is obtained by adding one proton to the nucleus of the atom and one electron to the lowest-energy orbital |
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Pauli exclusion principle |
The principle that states that two particles of a certain class cannot be in exactly the same energy state |
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Hund's rule |
The rule that states that for an atom in the ground state, the number of unpaired electrons is the maximum possible and these unpaired electrons have the same spin |
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Noble gas |
One of the elements of Group 18 of the Periodic table (helium, neon, argon, krypton, Xenon and radon); noble gases are unreactive |
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