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18 Cards in this Set
- Front
- Back
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Wave |
A vibrating disturbance by which energy is transmitted. |
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Wavelength |
Distance between identical points on the successive waves. |
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Frequency |
The number of waves that pass through a particular point in 1 second. |
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Amplitude |
The vertical distance from the middle of a wave to the peak or trough. |
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Speed of a wave |
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Electromagnetic wave |
Has an electric field component and a magnetic field component. |
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Electromagnetic radiation |
The emission and trasmission of energy in the form of electromagnetic waves. |
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Quantum |
The smallest quantity of energy that can be emitted in the from of electromagnetic radiation. |
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Photoelectric effect |
Electeons are ejected from the surface of certain metals exposed to light of at least a certain minimum frequency called the Threshold frequency. |
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Photons |
Particles of light. |
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Emission spectra |
Either continuous or line spectra of radiation emitted by substances. |
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Line spectra |
Light emissions only at specific wavelengths. |
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Ground state (Ground level) |
The lowest energy state of a system. |
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Exicted state (Excited level) |
Higher energy then the ground state. |
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Heisenberg's uncertainty principle |
It is impossible to know simultaneously both the momentum (p, mass times velocity) and the position of a particle qith certainty. |
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Electron density |
Gives the probability that an electron will be found in a particular region of an atom. |
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Atomic orbital |
The wave function of an electron in an atom. |
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Quantum numbers |
Describe the distribution of elwctrons in hydrogen and other atoms. |
