Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Chemistry > Chapter 7 > Flashcards

Chapter 7 Flashcards

0
Q

What is the heist point the way you called

A

It’s crest

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

What is a wave

A

A wave is described as a periodic back-and-forth motion that transmits energy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the lowest part of the wave called

A

The trough

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is a wavelength

A

A wavelength is the distance between any two corresponding points on successive waves for example crest to crest

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the amplitude wave

A

The amplitude of the wave can be thought of as a measure of the waves strength the amplitude of a wave has to do with the waves hight it is equal to half the vertical distance between the crust in the trough

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is frequency of the wave

A

The frequency of a wave is the number of complete waves crest plus trough that passes by a point in a given time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the standard industry units for a frequency

A

The hertz HZ

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the speed of the wave

A

The speed of a wavy simply the rate at which a wave travels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How fast does sound travel through air

A

Sound travels through air at a rate of 740 mph

331 m/s at ST P

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the fastest wave and what is it speed

A

The fastest ways are lightwaves and they travel at the speed of more than 186,000 mi./s

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the formula for a wave

A

P = λf

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What’s is used for velocity

A

V

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What’s symbol is used for wavelength

A

λ

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What does the F stand for in the formula

P=λf

A

Frequency

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Who propose the particle theory of light

A

Isaac Newton in 1704

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Who proposed the wave theory of light

A

Christian Huygens

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Who propose the electromagnetic theory of light

A

James clerk Maxwell in 1860

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is electromagnetic wave

A

There is an electric field and magnetic field vibrating at right angles to each other these two fields act together as a single wave

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Which wave can travel through empty space?

A

Electromagnetic wave

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is the speed of all electromagnetic waves?

A

3.00×10(8) m/s In a vacuum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What symbol is used to denote electromagnetic waves including light

A

c

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is the exact speed of light in a vacuum

A

C=299,792,458 m/s (Exactly)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What is one the fundamental constants of the universe

A

The speed of light never changes or varies in a vacuum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What is the mathematical formula for the electromagnetic wave

A

C=λf

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Because see which represents the electromagnetic wave is constant what is the relationship between the wavelength and the frequency?
Inverse relationship
25
Long wavelength electromagnetic waves must have a what frequency?
Low Frequency
26
Short wavelengths have what type of frequency?
Hi frequency
27
What is the shortest frequency of the electromagnetic radiation range
20 Hz
28
What is the electromagnetic spectrum?
The electromagnetic spectrum is the arrangement of all forms of electromagnetic radiation in order of frequency and wavelength
29
Who showed that lite has a characteristics of both particles and waves
Max Planck in 1900 and Albert Einstein in 1905
30
What is the dual nature of light
Light has both the wave nature and a particle nature
31
What is Quanta ?
The small bundles or packets of energy found in electromagnetic radiation or called Quanta
32
What is the individual quantum of light
Photons
33
According to the quantum theory of light each quantum has a specific quantity of energy which is proportional to its what
Frequency
34
What is the quantum theory of light
The quantum theory lite states that like consists of tiny bundles or packets called photons the amount of energy a photon contains depends upon its frequency
35
What is the definition of light
Tiny bundles or packets of energy traveling as electromagnetic waves
36
What is an interesting ramification of the quantum theory
The energy of a photon is quantized or restricted to only certain values all of which are whole numbers multiples of a basic unit
37
What symbol is used to denote the energy content of a photon?
E
38
What is the formula for the energy content of a photon is it relates to his frequency?
E=hf
39
What does the h stand for in the energy constant formula
H is a constant known as Plankton's constant
40
What is the value of Plankton's constant
6.63×10 to the -34 J• S
41
The energy of the photon is always what?
A whole number multiple of H (Plankton's constant)
42
What is the wave-particle duality?
The two-sided nature of light where light behaves as a wave in one experiment but can behave as a particle in another
43
What is a spectrometer
An instrument used in the laboratory to separate colors further and study them in more detail
44
What is a line spectrum
A Spectrum that passes am electrical current through a gas under low pressure that produce a line spectrum Which contains only certain colors or wavelengths
45
What is a continuous spectrum
Expecting containing a complete array of colors
46
What was wrong with Rutherford's model of the Adam
According to his theory the electron would eventually lose energy and spiral into the nucleus Thereby resulting destruction of the Adam
47
Who proposed a new model of the Atom
Bohr Proposed a new model of the Adam explaining both why the lines of hydrogen spectrum are mathematically related and why the Adam does not self-destruct
48
What was Bohes model of the Atom?
He proposed that the electron in the hydrogen Adam can move about the nucleus only in a specific orbit. There are limited number of orbits around the nucleus. As long is it stayed within this given orbit it could not radiate nor lose any energy
49
What are the specific orbits in Bohrs model of the Atom called?
Energy levels
50
What is the expression (formula) of the orbits of energy in Bohrs model of the Atom?
E = -J ----- n ^(2)
51
If Jay's the constant in the formula for energy level what does n stand for?
N is an Integer known as quantum number
52
Why is Jay negative in the energy level formula
Because potential energy is lowest when and is smaller. Also stated when you like trying is closest to the nucleus
53
What is the lowest energy state of an hydrogen atom?
Ground state.
54
What is the value of ground state?
n = 1
55
What are all the higher energy states called
Excited states
56
Is it possible for an electron in the Bohr's model to have an energy that does not correspond to one of its orbits why?
No,Electrons must be in one of the corresponding orbits and therefore cannot exist in between.
57
What is needed to promote an electron from one energy state to another
A definite amount of energy is needed
58
What level is considered the most stable for an electron
The most stable level of energy for an electron is when it is in its ground state
59
What is the amount of energy needed to move an electron from one orbit to another
The energy required to move an electron is the difference in energy from the excited shell to the ground state
60
What is the formula for energy of radiation
E2 -E1 = hf
61
Does the photon emit or absorb energy when it's electron moves from the ground state to the excited state?
Absorbs energy
62
Does the photon emit or absorb energy when it's electron moves from the excited state back down to the ground state
The photon emits energy when elect on goes from he excited state to ground state
63
What happens to the energy emitted from the photon when you it's electron falls from the excited state to n= 2 state?
It accounts for all the lines in the Visible spectrum of the hydrogen spectrum
64
What happens to the energy emitted from a photon who's electrons are falling from the excited state to ground state, n=1
This action accounts for all the lines in the ultraviolet region of hydrogen spectrum
65
What proves that hydrogen atoms must have a specific energy level
The line spectrum proves that hydrogen atoms have specific energy levels if electrons could have any energy a continuous spectrum would be the result
66
Since the energy level of each state is quantized which photons can be absorbed the electrons is promoted to a higher energy state
Only photons of the correct energy. ( or photons on a specific orbit). Electrons on different orbits require different amounts of energy to move to a higher more excited state)
67
Brogue wave model proposed what type of waves? Electromagnetic?
No Matter waves
68
What is the equation for the wavelength of matter waves
λ = h ---- mv
69
What does H and M in the stand for in the equation for wavelength in matter waves
``` H = Planck's constant, m = mass, v = velocity. mv = the objects Momentum ```
70
Does The wave particle duality of nature apply to always and all particles or just waves or just particles
The wave particle duality applies to all waves and all particles
71
What is a standing wave
The standing wave is an Atom who's electron in orbit behaves as a three dimensional matter wave containing an Intercal number of wavelengths in orbit
72
What would happen to a wave not containing an Intercal number of waves
A wave not containing an Intercal number of waves would cancel it self out by destructive interference
73
Who proposed the standing wave
Erwin Schrodinger in 1926 Combined the Bohr model with de Broglis hypothesis
74
What is the uncertainty principle
The uncertainty principle states it is impossible to simultaneously determine the momentum (mass times velocity) and the position of an electron with precision
75
What are orbitals?
Orbits are regions in which electron orbits the nucleus of an atom
76
Why is Borns model often called the electron cloud model!
Because an orbital is commonly represented as a cloud in which a dot .indicates the probability of finding an electron within this cloud. therefore the model is referred to as the Electron cloud model
77
What is an orbital
A region in space in which there is a high probability of finding an electron
78
Define orbit?
A definite path in space
79
Who proposed the theory of wave particle duality
Albert Einstein
80
What is another name of wave Particle duality
The quantum theory of light
81
Who developed the concept of matter waves
Louis de Broglie
82
What did Bohr introduced to the Atom that had never been introduced before
Energy level
83
Bohrs model of the atom included what
Energy levdls

Chemistry (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions