Chem 121

Question 1

S orbital shape

Answer 1

Spherical

Question 2

P orbital shape

Answer 2

Dumbbell

Question 3

D orbital shape

Answer 3

Cloverleaf

Question 4

F orbital shapes

Answer 4

Complex with many lobes

Question 5

The photoelectric effect is

Answer 5

The ejection of electrons by a metal when struck with light of sufficient energy

Question 6

According to Heisenberg Uncertainty Principle, it is impossible to simultaneously know precisely which two quantities?

Answer 6

Momentum and Position

Question 7

Visible light

Answer 7

The product of wavelength and frequency is a constant for visible light in a vacuum

Question 8

Who was the Austrian scientist who discovered that when electron occupy the same orbital, their spins must be paired?

Answer 8

Wolfgang Pauli

Question 9

Bohr model

Answer 9

Electrons travels in a circular paths called orbits

Electron energies are quantized

Question 10

What has the longest wavelength

Answer 10

Infrared

Question 11

What radiation has the greatest energy

Answer 11

Ultraviolet

Question 12

How do energy gaps between successive electron energy levels in an atom vary from low to high n values?

Answer 12

The energy gap decrease as n increases

Question 13

Which characteristic of an atomic orbital most closest associated with the magnetic quantum numbe, Mi

Answer 13

Orientation

Question 14

Who is the most important scientist that led to the idea of uncertainty between position and energy?

Answer 14

Werner Heisenberg

Question 15

The uncertainty principle states that

Answer 15

It is impossible to know the exact position and momentum of an electron simultaneously

Question 16

Which of the following is a statement of Hess’s law?

Answer 16

If a reaction is carried out in a series of steps, the H for the reaction will equal the sum of the enthalpy changes for the individual steps

Question 17

Albert Einsteins explanations of the photoelectric effect confirmed which of the following concepts?

Answer 17

Light has both particle and wave properties

Question 18

The contribution for which de Broglie is remembered in modern science is

Answer 18

His proposal that particles of matter should be associated with wavelike behavior

Question 19

What is the maximum electron capacity for the fifth energy level?

Answer 19

50

Question 20

Arrange the following spectral regions in order of increasing wavelength

Answer 20

Ultraviolet-Visible-infrared-microwave

Question 21

Who is the most important scientist that led to the probabilistic interpretation of the square of the wave function?

Answer 21

Max Born

Question 22

Which of the following quantum numbers described the shape of an orbital?

Answer 22

Orbital quantum number

Question 23

Delta H fusion is

Answer 23

Solid to a liquid

Question 24

Delta H vapor is

Answer 24

Liquid to a gas

Question 25

Photon formula

Answer 25

HC/wavelength

Question 26

Formula for mass

Answer 26

Mass=q/C x delta t

Question 27

Delta E formula

Answer 27

q-P x delta V

Question 28

q1 formula

Answer 28

M x c x delta t

Question 29

q2

Answer 29

(Mol)(delta H)

Question 30

Velocity formula

Answer 30

V=h/m d wavelength

Question 31

Wavelength formula

Answer 31

C/V

Question 32

Delta E formula

Answer 32

Delta E= q + w

Question 33

Wavelength formula

Answer 33

Wavelength=c/v

Question 34

Calorimeter equation

Answer 34

q=CCal x delta T

Question 35

Which quantum numbers must be the same for the orbitals to be degenerate in a many-electron atom?

Answer 35

N and l only

Question 36

Energy

Answer 36

E=hv