Ch. 6

Question 1

Wavelength

Answer 1

the distance between corresponding points on adjacent waves is the wavelength.

Question 2

Frequency

Answer 2

the number of waves passing a given point per unit of time

Question 3

ratio of wavelength to frequency

Answer 3

the longer the wavelength the smaller the frequency and vice versa.

Question 4

Electromagnetic radiation travels at:

Answer 4

the same velocity

Question 5

speed of light constant (c)

Answer 5

3.00 x 10^8 m/s

Question 6

equation for electromagnetic radiation

Answer 6

C = λv

Question 7

how did Max Planck describe energy;

Answer 7

in terms of quanta

Question 8

quantum

Answer 8

when energy is divided into discreet steps

Question 9

equation of quantum (energy of a photon)

Answer 9

E = hv

Question 10

Planck’s constant

Answer 10

6.626 x 10^-34 J-s

Question 11

if the wavelength of light is known you can calculate?:

Answer 11

the energy in one photon

Question 12

Electorons can only occupy

Answer 12

certain orbitals

Question 13

Electrons in permitted orbits

have specific:

Answer 13

“allowed”energies;

these energies will not be radiated from the atom

Question 14

Energy is only absorbed or emitted in such a way as to:

Answer 14

move an electron from one “allowed” energy state to another

Question 15

The equation for electron promotion or absorbtion

Answer 15

E = −hcRH (1/nf2 – 1/ni2)
RH = 1.097 x 10^7  /m

Question 16

Equation for the relationship between mass and wavelength

Answer 16

λ = h/mv  
v = velocity

Question 17

photoelectric effect

Answer 17

the emission of electrons from a metal surface induced by light

Question 18

Photon

Answer 18

a particle of energy

Question 19

Spectrum

Answer 19

the distribution among various wavelengths of the radiant energy emitted or absorbed by an object

Question 20

Continuous spectrum

Answer 20

a spectrum that contains radiation distributed over all wavelengths

Question 21

line spectrum

Answer 21

a spectrum containing radiation of only specific wavelengths

Question 22

momentum

Answer 22

mv = mass * velocity

Question 23

matter waves

Answer 23

the wave characteristics of a moving particle

Question 24

uncertainty principle

Answer 24

it is impossible to know simultaneously both the exact momentum of the electron and its exact location in space

Question 25

uncertainty equation

Answer 25

Δx * Δ(mv) ≥ h/4∏

Question 26

standing waves

Answer 26

waves that do not travel in space

Question 27

nodes

Answer 27

point where the amplitude of the wave is 0

Question 28

wave functions

Answer 28

describe the electron in an atom