Chemistry Chapter 4

Question 1

According to the Bohr model of the atom, which particles are allowed to exist in any one of a number of energy levels?

Answer 1

electrons

Question 2

The line emission spectrum is caused by the energies released when electrons…….

Answer 2

jump from higher energy level to a lower energy level

Question 3

Because excited hydrogen atoms always produced the same line-emission spectrum, scientists concluded that hydrogen

Answer 3

releases energy of only certain values

Question 4

Which color of light in the visible spectrum has the longest wavelength?

Answer 4

red

Question 5

A quantum of energy is the …..

Answer 5

minimum quantity of energy that can be lost or gained by an atom

Question 6

Bohr’s model correctly explains the spectra of atoms with how many electrons?

Answer 6

one

Question 7

A form of energy that exhibits wave behavior as it travels through space is…?

Answer 7

microwave radiation
infrared radiation
ultraviolet radiation

Question 8

In the equations λν = c, c represents ?

Answer 8

the speed of light

Question 9

The process of an atom releasing energy when it moves to a lower energy state is called

Answer 9

emission

Question 10

In the Bohr model of the atom, in which orbit is an electron in its lowest energy state?

Answer 10

in the orbit closest to the nucleus

Question 11

The common characteristics shown by X-rays, visible light, infrared radiation, and radio waves is that they all have the same….

Answer 11

speed

Question 12

A quantum of electromagnetic energy is called a …

Answer 12

photon

Question 13

An optical instrument that separates light entering it into component wavelength is a …

Answer 13

spectrascope

Question 14

The lowest total energy of the electron in a hydrogen atom occurs when the electron is in the state called…

Answer 14

ground state

Question 15

What happens to frequency when wavelength increases

Answer 15

decreases

Question 16

What happens to frequency when energy increases?

Answer 16

increases

Question 17

How does Bohr’s model of the atom differ from Rutherford’s

Answer 17

Bohr’s model shows the different levels and is more detailed, which Rutherford’s is a vague outline of what the cell looks like and where the electrons are

Question 18

Exclusion principle

Answer 18

Pauli

Question 19

wave-particle duality

Answer 19

de Broglie

Question 20

Wave equation

Answer 20

Schrodinger

Question 21

uncertainty principle

Answer 21

Heisenberg

Question 22

Number of energy levels and describes electron cloud size

Answer 22

n-energy

Question 23

Shape of electron cloud

Answer 23

l-shape

Question 24

direction in space of each orbital

Answer 24

m-orientation

Question 25

spin of the electron

Answer 25

s-spin

Question 26

If n=4, there may be... sublevels

Answer 26

16 in total | 4 in types

Question 27

The p sublevel may contain... pairs of electrons or orbitals

Answer 27

3

Question 28

Two electrons occupying the same orbital must have opposite...

Answer 28

spins

Question 29

The last electron in an oxygen atom enters the ... orbital

Answer 29

2p

Question 30

How many sublevels are possible for each of the following n=1 n=3 n=6

Answer 30

1 3 6/4

Question 31

How many orbitals are there in the following sublevels. p d f

Answer 31

3 5 7

Question 32

The size and shape of an electron cloud are most closely related to the electron's

Answer 32

energy

Question 33

The quantum number that indicates the position of an orbital about the three axes is space is the

Answer 33

magnetic quantum number

Question 34

An orbital that would never exist in the quantum description of atom is

Answer 34

2d

Question 35

For n=2, the number of possible orbital shapes is

Answer 35

4

Question 36

The number of particles found in the nucleus of an atom

Answer 36

mass number

Question 37

The method of studying substances that are exposed to continuous exciting radiation is called...

Answer 37

spectroscopy

Question 38

a negative electrode

Answer 38

anode

Question 39

atoms possessing the same number of protons but different number of neutrons

Answer 39

isotopes

Question 40

the number of cycles or peaks of a wave that occur in a unit of time

Answer 40

frequency

Question 41

A unique set of wavelengths absorbed by a particular substance

Answer 41

spectrum

Question 42

The smallest and least energetic path of an electron around a nucleus

Answer 42

ground state

Question 43

A particle found in the nucleus

Answer 43

nucleon

Question 44

A negative particle having 1/1836 the mass of a proton

Answer 44

ellectron

Question 45

The average mass of an element

Answer 45

atomic mass

Question 46

1/12 the mass of the carbon-12 isotope

Answer 46

Atomic mass unit

Question 47

a positive electrode

Answer 47

cathode

Question 48

a quantum of radiant energy

Answer 48

photon

Question 49

the emission of electrons from the surface of a metal when struck by light

Answer 49

photoelectric effect

Question 50

the number of protons in an atom

Answer 50

atomic number

Question 51

the unit of frequency

Answer 51

herts

Question 52

the particles which make up atoms are called

Answer 52

subatomic particles

Question 53

the physical distance between the peaks of a wave

Answer 53

wavelength

Question 54

energy that exhibits wavelike behavior as it travels through space

Answer 54

electromagnetic spectrum

Question 55

emission of electrons from a metal when light shines on the metal

Answer 55

photoelectric effect

Question 56

states that the energy was emittited in small, specific amounts of energy

Answer 56

Max Planck

Question 57

Minimum quantity of energy that can be lost or gained by an atom

Answer 57

quantum

Question 58

theory for a quantum

Answer 58

E=hv

Question 59

particle carrying a quantum energy and having zero mass

Answer 59

photon

Question 60

atoms absorb energy from heat or electricity and give off the energy as light

Answer 60

bright line spectrum

Question 61

___ explains the bright line spectra

Answer 61

Bohr's model

Question 62

an electron goes to _____ state, then ___ then goes to a ____ level and becomes____ and returns to a _____, ___ is released as photon_spectral lines

Answer 62

``` ground excited higher unstable lower energy ```

Question 63

electrons have wavelength properties

Answer 63

de Broglie

Question 64

it's impossible to determine simultaneously the position and velocity of an electron

Answer 64

uncertainty Principle' | Heinsenberg

Question 65

Dual wave particle properties

Answer 65

Schrodinger Wave equation

Question 66

describes mathematically the wave properties of electron

Answer 66

quantum theory

Question 67

average region of the most probably electron location

Answer 67

orbital

Question 68

energy level(1-7)

Answer 68

principle quantum number

Question 69

shape of orbital= s p d f

Answer 69

1 3 5 7

Question 70

orientation of the orbital around the nucleus

Answer 70

magnetic quantum number

Question 71

indicates the 2 fundamental spin states of an electron in an orbital

Answer 71

spin quantum number

Question 72

how many electrons can an orbital carry | and what must they have

Answer 72

2 | opposite spins

Question 73

no 2 electrons have the same 4 quantum numbers

Answer 73

Pauli's Exclusion Principle

Question 74

an electron occupies the lowest energy orbital that can recieve

Answer 74

Aufbau Principle

Question 75

A 2nd electron is not added to an orbital until each orbital in the sublevel contains one

Answer 75

Hund's rule

Question 76

what's the maximum # of electrons in the outer level of an atom

Answer 76

8