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Chemistry 🔬 > Chapter 5 > Flashcards

Chapter 5 Flashcards

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1
Q

Wavelength

A

Is the shortest distances between equivalent pointe on a continuous wave

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2
Q

Frequency

A

The number of waves that pass a given point per second

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3
Q

One hertz

A

One wave per second

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4
Q

Amplitude

A

The waves height from the origin to a crest

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5
Q

What speed do electromagnetic waves travel at

A

3.00 * 10 ^8 m/s

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6
Q

Electromagnetic wave equation

A

C=x(v)

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7
Q

Electromagnetic spectrum

A

Includes all forms of electromagnetic radiation with the only differences in the types of radiation being their frequencies and wave lengths

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8
Q

What two natures do light have

A

Waves and particles

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9
Q

Quantum

A

The minimum amount of energy that can be gained or lost by an atom

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10
Q

Man Planck

A

Germen physics

Energy of a quantum

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11
Q

Energy of a quantum

A

E quantum = h(v)

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12
Q

Planck’S constant

A

6.626 * 10^-34

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13
Q

Planck’s theory

A

For a given frequency matter can emit or absorb energy only in whole number multiplies of hv

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14
Q

Photoelectric effect

A

Electrons are emitted from metals surface when light of certain frequency sines on the surface

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15
Q

Photon

A

A massless particle that carries a quantum of energy

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16
Q

Energy of a photon

A

Ephoton=hv

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17
Q

Atomic emission spectrum

A

Set of frequencies of the electromagnetic waves emitted by atoms of the element

18
Q

When there are more waves what happens to the wave length

A

The wavelength is shorter

19
Q

Ground state

A

The lowest allowable energy state of an atom

20
Q

Excited state

A

When an atom gain energy

21
Q

Quantum number

A

The number assigned to each orbit of an electron

22
Q

De broglie equation

A

Predicates that all moving particles have wave characteristics

23
Q

Particle electromagnetic wave relationship

A

X=h/mv

24
Q

Electromagnetic radiation

A

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

25
Q

Heisenberg uncertainty principle

A

States that it is fundamentally impossible to know precisely both the velocity and position of a particle at the same time

26
Q

Quantum mechanical model of the atom

A

An atomic model in which electrons are treated as waves

27
Q

Atomic orbital

A

A three dimensional region around the nucleus

28
Q

Probability map

A

A time exposure photograph of the electron moving around the nucleus

29
Q

Principal quantum number

A

Indicates the relative size and energy of atomic orbitals

30
Q

Principal energy level

A

Major energy level

31
Q

Energy sub levels

A

The energy levels contained within a principal energy level

32
Q

Niels Bohr

A
  • Danish physicist working in Rutherford lab in 1973
  • proposed a quantum model for the hydrogen atom
  • the model correctly predicted the frequencies of lines in hydrogen atomic emission spectrum
  • suggested that the electron moves around the nucleus I’m going only certain allowed orbits
33
Q

Louis de Broglie

A

Proposed an idea that eventual accounted for the fixed energy levels of Bohrs model

34
Q

Werner Heisenberg

A

Showed that it is impossible to take a measurement of an object with out disturbing the object

35
Q

Erwin Schrödinger

A

New model of hydrogen atom applied equally well to atoms of other elements

36
Q

Electron configuration

A

The of electrons in an atom

37
Q

Aufbaw principal

A

Electron occupied the lowest energy orbital available

38
Q

Pauli exclusion principle

A

A maximum of two electrons can occupy a single atom ice orbital but only if electrons have opposite spins

39
Q

Wolfgang Pauli

A

Proposed the Pauli exclusion principle

40
Q

G.N Lewis

A

Devised the method in 1902 (electron dot diagram)

Chemistry 🔬 (7 decks)

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