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Chem > Concepts for 7.1-7.5 > Flashcards

Concepts for 7.1-7.5 Flashcards

Understand conceptual aspects of sections 7.1-7.5

1
Q

Wave

A

Vibrating disturbance by which energy is transmitted

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2
Q

Wavelength

A

The distance between identical points on successive waves

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3
Q

Frequency

A

Number of waves that pass through a particular point in one second

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4
Q

Amplitude

A

Vertical distance from the midline of a wave to the peak or trough

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5
Q

Electromagnetic wave

A

Electric field component and a magnetic field component

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6
Q

Maxwll’s theory

A

Mathematical description of the general behavior of light.

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7
Q

Electromagnetic radiation

A

Emission and transmission of energy in the form of electromagnetic waves

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8
Q

Electromagnetic waves

A

Speed of light

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9
Q

Quantum

A

Smallest quantity of energy that can be emitted (or absorbed) in the form of electromagnetic radiation

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10
Q

Photoelectric effect

A

Electrons are ejected from the surface of certain metals exposed to light of at least a certain minimum frequency (threshold frequency)

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11
Q

Photons

A

Particles of light

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12
Q

Atomic emission Spectra

A

Either continuous or line spectra of radiation emitted by substances

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13
Q

Line spectra

A

Light emission only at specific wavelengths

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14
Q

Color

A

Tells us the wavelength, frequency, and energy being emitted

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15
Q

Ground state (ground level)

A

Lowest energy state of a system

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16
Q

Excited state (excited level)

A

Higher in energy than the ground state

17
Q

Endothermic

A

Energy is required for an electron to move to an orbit that is further from the nucleus than its current orbit

18
Q

Exothermic

A

Energy is released when an electron moves to an orbit closer to the nucleus than its current oribit

19
Q

De Broglie equation

A

All matter can be described as having wave properties

20
Q

Standing waves

A

Stationary waves, remains fixed

21
Q

Electron density

A

The probability that an electron will be formed in a particular region of an atom

22
Q

Atomic orbital

A

The wave function of an electron in an atom

23
Q

Orbit

A

Bohr, 2 dimensinal

24
Q

Orbital

A

3 dimensional, sphere

Chem (11 decks)

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