ch. 7+8

Question 1

_________________ _________ moves as waves through space at the speed of light

Answer 1

electromagnetic radiation

Question 2

what is the symbol for wavelength?

Answer 2

upside down y

Question 3

of waves passing at a given point per unit of time is the ____________

Answer 3

frequency (v)

Question 4

what is the speed of light? (c)

Answer 4

3.00x10^8 m/s

Question 5

what is the formula for calculating frequency from wavelength?

Answer 5

c = (upside down y)(v)

Question 6

s^-1 is what?

Answer 6

Hz

Question 7

frequency can also be written as…

Answer 7

1/s or s^-1

Question 8

wavelength can also be written as…

Answer 8

m

Question 9

what is the emission of light from hot objects called?

Answer 9

blackbody radiation

Question 10

how can you spot blackbody radiation in the real world?

Answer 10

if an object glows when heated

Question 11

what is the emission of electrons from metal surfaces on which light is shone called?

Answer 11

photoelectric effect

Question 12

what is the emission of light from electronically excited gas atoms called?

Answer 12

emission spectra

Question 13

what is a quanta?

Answer 13

singular quantum

Question 14

einstein used photons and the idea that photons are quantized to explain the ________________ _______

Answer 14

photoelectric effect

Question 15

what is planck’s equation?

Answer 15

E = hv

Question 16

what is planck’s constant?

Answer 16

where h is 6.626x10^-34 J•s

Question 17

what is E in planck’s equation?

Answer 17

the energy of one photon

Question 18

what is the nickname for the continuous spectrum?

Answer 18

the rainbow

Question 19

what is a line spectrum?

Answer 19

wavelengths

Question 20

each element has a unique…

Answer 20

line spectrum

Question 21

Rh is called the _______ _______

Answer 21

rydberg constant

Question 22

electrons in the lowest energy state are in…

Answer 22

ground state, n=1

Question 23

any energy higher is called an…

Answer 23

excited state, n>1

Question 24

positive average E means…

Answer 24

a photon is absorbed

Question 25

negative average E means…

Answer 25

a photon is emitted

Question 26

an orbital is described by a set of three quantum numbers :

Answer 26

n, l, ml

Question 27

if n=1, what is l?

Answer 27

0

Question 28

if n=2, what is l?

Answer 28

0,1

Question 29

what is l in reference to n?

Answer 29

l = 0 to n-1

Question 30

if l=0, what is the letter in correspondence?

Answer 30

s

Question 31

if l=1, what is the letter in correspondence?

Answer 31

p

Question 32

if l=2, what is the letter in correspondence?

Answer 32

d

Question 33

if l=2, what is the letter in correspondence?

Answer 33

d

Question 34

if l=3, what is the letter in correspondence?

Answer 34

f