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Electrons in Atoms
Chapter 5 Section 1
10
Chemistry
10th Grade
09/22/2009

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Term
Electromagnetic Radiation
Definition
A form of energy that exhibits wavelike behavior as it travels through space
Term
Wavelength
Definition
The shortest distance between equivalent points on a continuous wave
Term
Frequency
Definition
The number of waves that pass a given point per second
Term
Amplitude
Definition
Wave's height from origin to a crest, or the origin to a trough
Term
Electromagnetic Specrtum
Definition
Encompasses all forms of ER, with the only difference in the types of radiation being their frequencies and wavelengths
Term
Quantum
Definition
The minimum amount of energy that can be gained or lost by an atom
Term
Planck's constant
Definition

6.626 X 10-34J

J=Joule, SI unit for energy

Term
Photoelectric effect
Definition
Electrons emitted from metal's surface when light of a certain frequency shines on the surface
Term
Photon
Definition
A particle of electromagnetic radiation with no mass that carries a quantum of energy
Term
Atomic Emission Spectrum
Definition
Set of frequencies of the electromagnetic waves emitted by atoms of the element
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