chapter 4 practice test

Question 1

a photon is emitted from a gaseous atom when an electron moves to its ground state from an

Answer 1

excited state

Question 2

when electromagenetic radiation strikes the surface of a metal, electrons are ejected from the metal’s surface. this is a description of the

Answer 2

photoelectric effect

Question 3

the lowest energy state of an atom is its

Answer 3

ground state

Question 4

which of these does the angular momentum quantum number indicate

Answer 4

the shape of an orbital

Question 5

which are the sublevels in the third energy level

Answer 5

s
p
d

Question 6

the distance between corresponding points on adjacent waves is the wave’s

Answer 6

wavelength

Question 7

according to Einstein which of the following can behave like a wave and also like a stream of particles

Answer 7

electromagnetic radiation

Question 8

when an atom in an excited stat emits a photon of radiation, the energy of the photon is equal to the

Answer 8

difference in energy between the atom’s excited state and its final state

Question 9

the total number of orbitals that can exist at a given main energy level, n, is equal to

Answer 9

n^2

Question 10

how many possible orientations does an s orbital have

Answer 10

1

Question 11

how many possible values are there for the spin quantum number

Answer 11

2

Question 12

what is the total number of electrons needed to fill the fourth main energy level

Answer 12

32

Question 13

whenever an excited hydrogen atom returns from an excited state to its ground state, it

Answer 13

emits a photon of radiation

Question 14

when electrons change energy state, the amount of energy given off or absorbed is equal to

Answer 14

hv

Question 15

max Planck proposed that “hot” objects radiate energy in small, specific amounts called

Answer 15

quanta

Question 16

which of the following requires that each of the p orbitals at a particular level have one electron before any of them can have two electrons

Answer 16

hund’s rule

Question 17

a particle that has an outer main energy level fully occupied by eight electrons has a _______ configuration

Answer 17

noble gas

Question 18

the energy of a photon depends on the _____ or _____ of the radiation

Answer 18

frequency or wavelength

Question 19

if electromagnetic radiation A has a lower frequency than electromagnetic radiation B, then compared with B, the wavelength of A is _____ or _____

Answer 19

greater or larger

Question 20

the frequency of electromagnetic radiation is measured in waves per second. A frequency of one wave per second is called a ____

Answer 20

hertz

Question 21

the distance between corresponding points on adjacent waves is called

Answer 21

wavelength

Question 22

the ejection of electrons from the surface of a metal when light shines on it is called the

Answer 22

photoelectric effect

Question 23

the _______ energy state of an atom is called its ground state

Answer 23

lowest

Question 24

the number of waves that pass a point in one second is called

Answer 24

frequency

Question 25

the numerical value of the speed of electromagnetic radiation in a vacuum is _____

Answer 25

3*10^8

Question 26

______ is the color of the visible spectrum with the longest wavelength

Answer 26

red

Question 27

increasing order of wavelength of the visible spectrum

Answer 27

violet, blue, green, yellow, orange, red

Question 28

increasing frequency of the visible spectrum

Answer 28

red, orange, yellow, green, blue, violet

Question 29

electrons that are not in the highest occupied energy level are called

Answer 29

inner shell electrons

Question 30

any form of energy that exhibits wavelike behavior as it travels through space is called

Answer 30

electromagnetic radiation

Question 31

an electron occupies the lowest energy orbital that can receive it

Answer 31

aufbau principle

Question 32

all orbitals of equal energy are occupied by one electron before any single orbital is occupied by a second electron

Answer 32

Hund’s rule

Question 33

no two electrons in the same atom can have the same four quantum numbers

Answer 33

pauli exclusion principle

Question 34

the single electron of hydrogen circles the nucleus only in allowed orbits, each with a fixed energy

Answer 34

bohr model of the atom