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Chemistry 103 > Chapter 7 (Exam 3) > Flashcards

Chapter 7 (Exam 3) Flashcards

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1
Q

Electric and magnetic fields move perpendicular to each other and move at what speed?

A

The speed of light

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2
Q

How fast is the speed of light?

A

3.00x10^8 meters per second

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3
Q

What is amplitude of a wave?

A

Vertical height of the waves peaks

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4
Q

What does the amplitude of a wave determine?

A

determines the intensity of light

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5
Q

Frequency is equal to…

A

speed of light/wavelength

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6
Q

What is frequency measured in?

A

Hertz, seconds^-1

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7
Q

When a wavelength is short then the frequency is…

A

high

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8
Q

when a wavelength is long the frequency is…

A

low

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9
Q

Magnetic Field

A

A space where a magnetic particle feels a force

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10
Q

Electric Field

A

A space where a charged particle feels a force

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11
Q

Visible light is between what wavelengths?

A

400-750 nanometers

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12
Q

how many nanometers are in a meter?

A

1x10^9 or 1 million

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13
Q

Units for speed of light?

A

meters per second

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14
Q

Constructive interference

A

When peaks overlap and enter in phase. The amplitudes are added together getting bigger

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15
Q

Destructive interference

A

When peaks over lap with troughs entering out of phase. the amplitudes added together decrease or cancel

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16
Q

Photoelectric effect

A

Expormental evidence that light also behaves like a particle

17
Q

the energy of a photon is equal to

A

H, planks constant multiplied by frequency

18
Q

Planks constant

A

6.626 x 10^-34

19
Q

Bohr Model

A

electrons orbit around nucleus like planets around the sun

20
Q

When an electron moves to a lower energy orbit a ____ is emitted

A

photon

21
Q

Mass of an electron

A

9.11 x 10^-31 kg

22
Q

Uncertainty principle

A

an electrons position and velocity are complementary and cannot be measured simultaneously. The more accurately we know the position , the less accurately we know the velocity.

23
Q

Equation for difference in energy. example n=6 to n=5

A

Ef-Ei= -2.18x10^-18 (1/nf2 - 1/ni2)

24
Q

Angular Momentum Quantum Number (l)

A

An integer that determines orbital shape

L=0= s orbital
L =1= p orbital
L =2= d orbitals
L =3= f orbitals

25
Q

The Spin Quantum number (ms)

A 
specifies the spin of an electron
spin up (+1/2)
spin down (-1/2)
26
Q

Orbital shape is determined by what factor?

A

(L) 0 1 2 3

s p d f

27
Q 
Put in order of increasing wavelength
Infared
Microwave
UV 
radio
A

Ultraviolet, Infrared, Microwaves, Radio Waves

28
Q

Put in order of increasing energy per photon

A

Radio Waves, Infrared, Microwaves, Radio Waves

Chemistry 103 (1 decks)

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