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17 Cards in this Set
- Front
- Back
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What is is electromagnetic radiation?
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A form of energy that exhibits wavelike behavior as it travels through space.
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What is the electromagnetic spectrum?
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The combination of all the forms of electromagnetic radiation.
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What is a wavelength?
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The distance between corresponding points on adjacent waves.
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What is frequency?
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The number of waves that pass a given point in a specific time, usually one second.
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What is the photoelectric effect?
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The emission of electrons from a metal when light shines on the metal.
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What is a quantum?
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The minimum quantity of energy that can be lost or gained by an atom.
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What is a photon?
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A particle of electromagnetic radiation having zero mass and carrying a quantum of energy.
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What is a ground state?
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The lowest energy state of an atom.
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What is an excited state?
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A state in which an atom has a higher potential energy than its ground state.
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What is Heisenberg's uncertainty principle?
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It states that it is impossible to determine simultaneously both the position and velocity of an electron or any other particle.
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What is the quantum theory?
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It describes mathematically the wave properties of electrons and other very small particles.
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What is an orbital?
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A three-dimensional region around the nucleus that indicates the probable location of an electron.
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What is quantum number?
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It specifies the properties of atomic orbitals and the properties of electrons in orbitals.
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What is the principal quantum number?
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It indicates the main energy level occupied by the electron.
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What is the angular momentum quantum number?
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It indicates the shape of the orbital.
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What is the magnetic quantum number?
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It indicates the orientation of an orbital around the nucleus.
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What is the spin quantum number?
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It has only two possible values, which indicate the two fundamental spin states of an electron in an orbital.
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