AES Flashcards

1
Q

How do colours arise?

A

Through electromagnetic radiation and matter (absorption, reflection, and transmittance)

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2
Q

Electromagnetic radiation

A

light, the oscillating electric and magnetic fields

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3
Q

Transmittance

A

a measurement of how much light passes through a sample

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4
Q

Electrons closest to the nucleus

A

have lower energies than those farther away

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5
Q

how do you excite an electron?

A

shine a light that has the energy equal to the difference between an occupied and unoccupied state

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6
Q

Electron is excited

A

Energy increases

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7
Q

Electron relaxes

A

Energy decreases

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8
Q

Qualitative analysis

A

analysis that does not provide the concentration of species in the sample

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9
Q

Quantitative analysis

A

analysis that gives the concentration of the species

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10
Q

What gasses were studied?

A

Helium, Hydrogen, and Neon

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11
Q

What is emitted?

A

SPECIFIC wavelengths of light dependent on the values of the energy

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12
Q

n is a measure of

A

the distance of electrons from the nucleus

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13
Q

spectrum of H

A

410 - violet
440 - purple
490 - blue
650 - red

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14
Q

spectrum of He

A

485 - dark blue
500 - blue
510 - turquoise
595 - burnt orange
680 - red

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15
Q

Spectrum of the sun

A

entire spectrum (full rainbow) will be visible

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16
Q

Fraunhofer lines

A

dark lines on the solar spectrum due to the sun absorbing radiation at different wavelengths