P&W : Spectra Flashcards

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1
Q

Ground State

A

Electrons in the lowest energy orbiut are said to be in ground state

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2
Q

Excited state

A

Electrons can gain energy to move up to higher energy levels (excited state)

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3
Q

Ionised

A

When an electron is completly removed from an electron, it is said to be ionised

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4
Q

Continous Spectrum

A

A complete range of wavelengths is created by sources such as white light when passed through a prism or grating.

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5
Q

Line Emmision Spectrum

A

Produced by electrons making transitions from excited state to to a lower energy level releasing a photon of a particular freqeuncy.

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6
Q

Line Absorbtion Spectrum

A

When photons of light passes through gas, the photons with the same energy as the energy gaps in the atoms can be absorbed.

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7
Q

Fraunhofer Lines

A

Absorption lines in the spectrum of sunlight.

They provide evidence for the composition of the suns outer atmosphere.

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