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The flashcards below were created by user
gerardcb
on FreezingBlue Flashcards.
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Light has properties of both _____________ & ______________
waves; particles
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What is the speed of light?
3.0 x 108 m/s (300,000,000 m/s)
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Order of magnetic spectrum from least radiation and longest wavelengths to the most radiation and the shortest wavelengths
Radio, TV, Microwaves, Infrared(Heat Lamp), Visible, UV x-rays, Gamma rays
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Microwaves have shorter waves than (X-Rays, radio waves, UV light or gamma rays)
Radio waves
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A heat lamp produces (infrared, radio waves, X-rays or microwave) radiation.
Infrared
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Amplitude determines the ___________ of light.
Brightness / Intensity
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How is amplitude measured?
Height of wave
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What is the distance between successive waves of a crest called?
Wavelength
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What is frequency?
How fast a wave oscillates up and down through a fixed point in a given time.
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What color has the highest frequency in visible light?
Violet
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What are quanta? Who proposed the idea of quanta?
Fundamental "pieces" of energy; Plancks
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What are packets of energy or light called? Who proposed the idea of this?
Photons; Einstein
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Who explained the Photoelectric Effect? What is the Photoelectric Effect?
Einstein;
When a photon strikes the surface of a metal, it transfers its energy to an electron in a metal atom. Electrons are ejected from the surface of the metal.
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What is an orbital?
A region around nucleus where an electron with a given energy is likely to be found.
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What letter signifies an electron's principle quantum number?
n
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What does the Heisenberg principle state?
The position and momentum of a moving object cannot be measured and known exactly. Electrons are most likely found in electron clouds or in orbitals.
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What does the Aufbau principle state?
Electrons are added to the lowest energy orbital first.
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How did Bohr label energy levels?
By Quantum number (n)
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Which scientist labeled each energy level in his atomic model by a quantum number?
Bohr
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