Chapter 4- Arrangement of Electrons in Atoms

Question 1

What is a wavelength

Answer 1

The shortest distance between equivalent points on a continous wave

Question 2

What is the symbol for wavelength?

Answer 2

Lambda (upsidedown y)

Question 3

What unit are wavelengths measured in?

Answer 3

Meters

Question 4

What is frequency

Answer 4

The number of waves that a pass a point per second

Question 5

What is the symbol for frequency

Answer 5

Nu (v)

Question 6

What unit is frequency measured in

Answer 6

Hertz

Question 7

What is amplitude

Answer 7

The waves height from the origin to the crest or the origin to the trough.

Question 8

What is the relationship between wavelength and frequency

Answer 8

Inverse. As frequency increases, wavlength decreases

Question 9

What is the relationship between wavelength/frequency and amplitude?

Answer 9

Wavelength and frequency do not affect the amplitude

Question 10

What is the speed of light approximately

Answer 10

3.00x10⁸ m/s

Question 11

What is the equation that relates speed of light wave length and frequency

Answer 11

C=lambda(v)

Question 12

How do you separate white light into individual colors

Answer 12

Pass it through a prism

Question 13

Heated objects gain _____ energy as they get hotter.

Answer 13

Kinetic

Question 14

What is quantum

Answer 14

The minimum amount of energy gained or lost by an atom

Question 15

How does matter absorb quantized energy

Answer 15

Stepwise

Question 16

What is the equation relating energy of a quantum, planks constant, and frequency

Answer 16

E quantum = hv

Question 17

What is the relationship between energy of a quantun and frequency

Answer 17

The energy of a quantum increases as frequency increases.

Question 18

What is the photoelectric effect

Answer 18

When photoelectrons are admitted from a metal’s surface when light of a certain frequency or higher shines on the surface

Question 19

What did albert einstein propose about the dual nature of light in 1905

Answer 19

Light behaves as both a wave and a particle.

Question 20

What is a photon

Answer 20

A massless particle of light that carries a quantum of energy

Question 21

What is the atomic emission spectrum

Answer 21

The set of frequencies of the light waves emitted by an atom

Question 22

Is the atomic emission spectrum unique for each element

Answer 22

Yes

Question 23

What can the atomic omission spectrum help determine

Answer 23

The gas composition of stars

Question 24

What did Louis de Broglie propose

Answer 24

That electrons behave like a wave

Question 25

What is the equation that relates wavelength, plancks constant, particle mass, and velocity?

Answer 25

Lambda = h/mv

Question 26

What is Heisenbergs uncertainty principle

Answer 26

Its impossible to know the precise velocity and position of an object at the same time

Question 27

In Heisenbergs uncertainty principle, for macroscopic objects the uncertainty is ______, but for electrons the uncertainty is _______

Answer 27

Negligible Significant

Question 28

What happens when a photon bumps into an electron

Answer 28

It changes the electrons position and velocity

Question 29

What are the 3 parts of the quantum mechanical mode of the atom

Answer 29

Treats electrons as waves Limits an electrons energy to certain values Doesn't describe an electrons path around the nucleus

Question 30

What is an atomic orbital

Answer 30

A 3-D region around the nucleus which describes an electrons probable location

Question 31

The hydrogen atom only has certain ___________

Answer 31

Allowable energy states

Question 32

What is ground state

Answer 32

The lowest energy state

Question 33

What is excited state

Answer 33

Any state above the ground state when an atom gains energy

Question 34

Hydrogens electrons can only move in ___________ around the nucleus

Answer 34

Certain allowable orbits

Question 35

What is quantum number

Answer 35

A number assigned to each electron orbit

Question 36

Since only certain atomic energies are possible, only certain _________ can be emitted

Answer 36

Wavelengths (colors) of radiation

Question 37

What is the major limitation of Bohr's model of the atom

Answer 37

It explains hydrogens spectrum but fails to any other elements spectrums