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Definition
| Has the longest wavelength and the lowest frequency |
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| Shortest wavelength and highest frequency |
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| 3.00 x 10^8 m/s; electromagnetic radiation's way of traveling through space |
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Definition
| Where the wave cycle begins |
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Definition
| Height of the wave from origin to top |
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Definition
| Distance between the top of the waves |
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| Number of wave cycles to pass a given point per unit of time |
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| Wavelength and Frequency Equation |
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Definition
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Term
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Definition
Steps in emitting light:
Element is vaporized
Electrons absorb electrical energy and jump to higher energy levels into the excited state
e- looses energy it just gained and fall back down a energy level to their ground state
As the e- falls it will give off radiation in the form of light
Excess energy emits light of wavelengths of line spectra |
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Definition
Energy is quantized and can only occur in "hv" units
Each unit is a quantum
A system can transfer energy only in discrete quanta |
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Amount of energy emitted or absorbed is proportional to the frequency of the radiation
E=h x v (h= 6.626x10^-34 Jxs; v= frequency, s^-1; E= energy in J) |
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| Energy of a single UV proton |
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Definition
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| Energy of a mole of UV photon |
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Definition
| 1 mol= 6.20x10^23 photons |
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Definition
| Light=quantum of energy that behave as waves; electromagnetic radiation is viewed as a stream of particles called photons; energy of each photon can be given by E=hc/wavelength; electrons are emitted from the surface of a metal when light hits it |
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Definition
| Calculates the wavelength for a particle; wavelength=h(planck's constant)/m(mass)v(velocity) |
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Definition
| e- drops from a high energy level to n=1; ultraviolet light emitted |
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Definition
| e- drops from a high energy to n=2; visible light is emitted (ROYGBIV) |
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Definition
| e- drops from a high energy level to n=3; infrared is emitted |
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Term
| Heisenberg Uncertainty Principle |
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Definition
| It is impossible to know both speed and the position of an e- particle at the same time; location of an e- can only be determined if it is struck by a photon |
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