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Chemistry Flashcards

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0
Q 
The distance between two successive peaks on adjacent waves is it's...
A. Frequency 
B. Quantum number
C. Quantum number
D. Velocity
A

Wavelength

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1
Q 
Visible light, x rays, infrared radiation and radio waves all have the same...
A. Energy
B. Wavelength 
C. Speed
D. Frequency
A

Speed

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2
Q 
A quantum of electromagnetic energy is called..
A. Photon
B. electron
C. Excited state
D. Orbital
A

Photon

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3
Q 
The energy of a photon is related to its..
A. Mass
B. speed
C. Frequency
D. Size
A

Frequency

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4
Q

A line spectrum is produced when an electron moves from one energy level to a…
A. Higher
B. lower
C. Into the nucleus
D. To another position in the same sublevel

A

Lower

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5
Q

For an electron in an atom to change from the ground state to an excited state..
A. Energy must be released
B. energy must be absorbed
C. Radiation must be emitted
D. The electron must make a transition from a higher to a lower energy level

A

Energy must be absorbed

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6
Q

According to the Bohr model of the atom, the single electron of a hydrogen atom circles the nucleus ….
A. In specific, allowed orbits
B. in one fixed orbit all all times
C. At any of an infinite number of distances, depending on its energy
D. Counterclockwise

A

In specific, allowed orbits

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7
Q 
The change of an atom from an excited state to the ground state always require..
A. Absorption of energy
B. emission of electromagnetic radiation
C. Release of visible light
D. An increase I'm electron energy
A

Absorption of energy

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8
Q

French scientist, Louis de Brogile theorized that…
A. Electrons could have dual wave particle nature
B. light waves didn’t have a dual wave particle nature
C. The natures of light and quantized electron orbits were not similar
D. Bothers model of the hydrogen atom was completely correct

A

Electrons could have a dual wave particle nature

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9
Q

The equation e=hv helped Louis Brogile determine…
A. How protons and neutrons behave in the nucleus
B. How electron wave frequencies correspond to specific energies
C. Whether electrons behave particles
D. Whether electrons exist in a limited number of orbit with different energies

A

How electron wave frequencies correspond to specific energies

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10
Q

Which model of the atom explains the orbitals of electrons as waves..
Which model of the Atom explains the orbitals of electrons as waves
A. The Bohr model
B. The quantum model
C. Rutherfords model
D. Plancks theory

A

Quantum model

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11
Q 
The region outside the nucleus where an electron can most probably be found is the..
A. Electron configuration 
B. quantum 
C. S sub level
D. Electron cloud
A

Electron cloud

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12
Q

Both the Heisenberg uncertainty principle and the schrödinger wave equation..
A. Are based on Bohrs theory
B. Treat electron as particles
C. Led in locating an electron in an atom
D. Led to the concept of the atomic orbitals

A

Led to the concept of atomic orbitals

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13
Q

According to the quantum theory of an atom, in an orbital…
A. And electrons position cannot be known precisely
B. And electron has no energy
C. Electrons cannot be found
D. Electrons travel around the nucleus on paths of specific radii

A

An electrons position cannot be known precisely

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14
Q 
The quantum number that indicates the position of an orbital about the three axes in space is the..
A. Principal quantum number
B. Angular momentum quantum number
C. Magnetic quantum number
D. Spin  quantum number
A

Principal quantum number

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15
Q 
The main energy levels of an atom are indicated by the..
A. Orbital quantum numbers
B. Magnetic quantum numbers
C. Spin quantum numbers
D. Principal quantum numbers
A

Principal quantum numbers

16
Q

The angular momentum quantum indicates the..
A. Orientation of an orbital around the nucleus
B. Shape of an orbital
C. Direction of the spin of the electron and it’s orbital
D. Main energy level of an orbital

A

Shape of an orbital.

Psychology (21 decks)

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