chem Flashcards

(16 cards)

1
Q

electromagnetic radiation

A

A form of energy that exhibits wave like behavior as it travels through space

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2
Q

wavelength

A

The shortest distance between corresponding points or adjacent waves

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3
Q

frequency

A

The number of waves that passed through a certain point in specific time. Usually one second.

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4
Q

amplitude

A

a waves height from origin to crest

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5
Q

photon

A

a particle of EM radiation having zero mass and carrying a package of energy

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6
Q

ground state

A

The lowest energy state of an atom (all electrons are as close to the nucleus as you can get)

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7
Q

excited state

A

where the atom has a higher potential E than it has in its ground state (all electrons have extra energy by absorbing a photon)

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8
Q

atomic emission spectra

A

The emission spectrum of an element is the set of frequencies emitted by atoms of that element

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9
Q

quantum theory

A

describes mathematically, the waves properties of electrons and other very small particles

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10
Q

orbital

A

The 3-D region around the nucleus that indicates the probable location of electron

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11
Q

planck

A

he said there were packets of energy instead of continuous waves

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12
Q

einstein

A

packets of energy are moving in a wave ( do a wave particle nature of light )

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13
Q

bohr

A

A photon can come in and give e- energy enough to move up in orbit or two, then it can’t handle that orbit. It drops down to a lower orbit. it was wrong but made people think

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14
Q

de brogile

A

electrons as waves; his theory predicted that all moving particles have wave characteristics model explains the line emission spectra

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15
Q

heisenberg

A

is it possible to determine simultaneously both the position and velocity of an electron or any other particle?

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16
Q

Schrodinger

A

With the work of Heisenberg and debroglie, he developed an equation dealing with electrons as waves. It laid the foundation for modern quantum theory.