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Chemistry > Vocab 5 > Flashcards

Vocab 5 Flashcards

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1
Q

Electromagnetic radiation
What is part of it?

A

Visible light

Form of energy exhibiting wavelike behavior as it travels thru space

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2
Q

Electromagnetic spectrum
Also called what?
Includes what?

A

Encompasses all forms of electromagnetic radiation with only differences in the types of radiation being their frequencies and wavelength

Also called EM spectrum
Includes radio waves, TV, microwaves, infrared, radar blah blah

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3
Q

Crests

A

Top of wave

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4
Q

Troughs

A

Bottom wave

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5
Q

Frequencies (f)

A

Rate of vibration of a wave, number of waves that pass at a given point

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6
Q

Hertz (Hz)

A

Wave frequency expressed in these units

1Hz=1cycle per second

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7
Q

Cycle

A

Complete rotation (trough to trough or crest to crest

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8
Q

Period 🤪🩸 (T)

A

TIME required to complete one cycle

Frequency and Time are inverse f=1/T

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9
Q

Amplitude 🖌️

A

Waves height from origin (middle) to crest or trough

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10
Q

Wavelegth

A

The shortest distance between equivalent points on a continuous wave
^u^u^ top of ^ to the other in straight line

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11
Q

Quanta

A

Max Planck said matter can gain and lose ENERGY only in small amounts called this

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12
Q

Quantum

A

Minimum amount of energy that can be gained or lost by an atom
Packet of energy

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13
Q

Joules J

A

SI unit for energy

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14
Q

Planks constant (h

A

Energy of a quantum of a certain frequency can be calculated

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15
Q

Inertia

A

Tendency of a moving body to stay in motion or at rest unless acted upon by some outside force

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16
Q

Momentum (p

A

Product of mass and velocity

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17
Q

Newtonian mechanics

A

Describes the behavior of visible objects traveling at ordinary velocities

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18
Q

Quantum mechanics
Example

A

Behavior of extremely small particles traveling at velocities near that of light

Example electron

19
Q

Photoelectric effect

A

Phenomenon in which electrons are ejected from the surface of a metal plate when struck by LIGHT

Photo means light

20
Q

Photoelectrons photo meaning light

A

Electrons emitted in that process

The ones being knocked out

21
Q

Photon

A

A particle of electromagnetic radiation with NO mass that carries a quantum of energy

22
Q

Atomic emission spectrum

A

Set of frequencies (colors ) of electron magnetic waves given off by the atoms and is unique to each element

23
Q

Quantized

A

Only certain quantities of energy can be given off

24
Q

Ground state

A

Lowest allowable energy state (energy level closest to the atom)

25
Q

Orbits

A

Ring around atom

26
Q

QUANTUM NUMBERS

A

n L m s
Integers that represent electrons occupying different orbits of several different energies

27
Q

De brogilie equation

A

Predicts all moving particles have wave characteristics

λ= h/mv

28
Q

Heisenberg uncertainty principle

A

Impossible to know precisely both exact velocity and exact position of an object at the same time

29
Q

Atomic orbital
Also called what

A

Three dimensional region effectively occupied by an electron in an atom
Electron cloud for many years

30
Q

Quantum numbers (n)

A

Number describing a property of an electron in an atom and representing different electron energy states (energy lvl) 4d10 4 is it

31
Q

Quantum mechanical model of the atom

A

Shrodinger‘s new atomic model in which electrons are treated as waves

32
Q

Principle quantum number

A

n representing energy lvl electron is in,
Energy lvl, energy state, and energy shell are same thing

33
Q

Atomic orbital

A

Three dimensional region around nucleus describing an electrons probably location

34
Q

Magnetic quantum number

A

M representing the orbital the electron is in often drawn as a box

35
Q

Electron configuration

A

The arrangement of electrons in an atom

36
Q

Auf Bau prinzipiell

A

Each electron occupies the lowest energy orbital available

37
Q

Auf Bau (structure) diagram

A

Diagonal rule

38
Q

Hunds rule

A

Single electrons with same spin must occupy each equal energy orbital before additional electrons with opposite spins can occupy the same orbitals

39
Q

Degenerate

A

Orbitals in same sublevels, boxes, 2p6 2p4, and they have same energy

40
Q

Noble gas configuration

A

Method representing electron configuration of noble gases using bracketed symbols [AR]

41
Q

Abscissa

A

X axis

42
Q

Ordinate

A

Y axis

43
Q

Valence electrons

A

Electrons in atoms outermost orbitals (6s 2 would be highest

44
Q

Electron dot diagram

A

Outer electrons around symbol(Ar) of elements

Chemistry (22 decks)

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