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Chemistry

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Term
Definition
Electromagnetic Radiation   form of energy that has wavelike behavior as it travels through spave  
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Electromagnetic Spectrum   All the forms of electromagnetic radiation  
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Wavelength   distance between corresponding points on adjacent waves  
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Frequency   (v) number of waves that pass a given point in a specific time, usually one second (described as waves/second called hertz)  
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photoelectric effect   emission of electrons from a metal when light shines on the metal  
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quatntum   energy that is the minimum quantity of energy that can be lost or gained by an atom (E is the energy in Joules)  
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Planck's constant   h=6.626x10-34th Jxs  
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electromagnetic radiation equation   c(speed)= /\(wavelength)x v (frequency)  
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Photon   particle of electromagnetic radiation having zero mass and carrying a quantum energy  
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ground state   lowest energy state of an atom  
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excited state   atom has a higher potential energy than it has at ground state  
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continuous spectrum   emission of continuous range of frequencies of electromagnetic radiation  
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Niels Bohr   proposed a hydrogen atom model that linked the atoms electron to photon emission (Plum pudding!!)  
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Heisenberg uncertainty principle   states that its impossible to determine simultaneously both the position and velocity of an electron or any other particle  
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Quantum Theory   describes mathematically the wave properties of electrons and other very small particles  
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orbital   three dimensional region around the nucleus that holds electrons  
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Created by: Mikenzie
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