CHEM 121 FINAL EXAM QUESTIONS &
UPDATED CORRECT ANSWERS
PASSED 100% LATEST VERSION
What are the different levels of energy? - Correct Answer ✔✔ 1s < 2s < 2p < 3s < 3p <
4s < 3d < 4p < 5s < 4d < 5p < 6s
How do you convert Celsius to Fahrenheit? - Correct Answer ✔✔ Fahrenheit = (Celsius
x 9/5) + 32
How do you convert Fahrenheit to Celsius? - Correct Answer ✔✔ Celsius = (Fahrenheit
- 32) x 5/9
How do you convert Celsius to Kelvin? - Correct Answer ✔✔ Kelvin = Celsius + 273.15
How do you convert Kelvin to Celsius? - Correct Answer ✔✔ Celsius = Kelvin - 273.15
How do you convert Fahrenheit to Kelvin? - Correct Answer ✔✔ Kelvin = (Fahrenheit +
459.67) x 5/9
How do you convert Kelvin to Fahrenheit? - Correct Answer ✔✔ Fahrenheit = (Kelvin x
9/5) - 459.67
What is Hess's Law? - Correct Answer ✔✔ When reactants are converted to products,
the enthalpy of the reaction is the same, no matter if it occurs in one step, or a series of
steps.
What is the Pauli Exclusion Principle? - Correct Answer ✔✔ Each electron has a set of
4 numbers, called quantum numbers (q.n.'s.) that specify it completely. No two electrons
in the same atom can have the same 4 q.n.'s. The primary quantum number n tells you
which of the main energy levels you are in.
What is the principle of quantum number n? - Correct Answer ✔✔ Describes the
distance of the orbital from the nucleus. The larger the value the larger the distance of
the electron.
What is the magnetic quantum number ml? - Correct Answer ✔✔ Tells us the 3D
orientation of the orbital in space.
What is the electron spin quantum number ms? - Correct Answer ✔✔ Tells us the spin
direction of the electron, +1/2 or -1/2
, What is the angular momentum quantum number l? - Correct Answer ✔✔ This tells us
the shape.
Which areas of the periodic table belong to which orbital? - Correct Answer ✔✔ Groups
1 & 2 & Helium = s
Groups 3 through 12 = d
Groups 13 through 18 (not He) = p
What happens in terms of reactions throughout the periodic table? - Correct Answer ✔✔
The reactions are more vigorous as we go down, like in Group 1.
What are the reactive characteristics of group 7 - halogens? - Correct Answer ✔✔ They
are all very reactive because of their 7 valance electrons. They have very high
ionization energies & electron affinities. Fluorine is very reactive and known as the tiger
of chemistry. The reactivity is the opposite as the rest. It decreases as it goes down.
What kinds of atoms form together in a hybrid state? - Correct Answer ✔✔ Those who
do not normally look to bond together from number of valence electrons.
What is a hybrid state? - Correct Answer ✔✔ Moving the composition of electrons
throughout the s, p and d levels of electrons.
What are the 3 different kinds of hybridization? - Correct Answer ✔✔ sp: 2 s --- 1s 1p
sp2: 2s 1 p --- 1s 2p
sp3: 2s 2p --- 1s 3p
What is the purpose of hybridization? - Correct Answer ✔✔ To stabilize the atom.
What can carbon bond with as far as hybridization? - Correct Answer ✔✔ sp, sp2, sp3
Which equation relates pressure, temperature, volume and number of moles of gas? -
Correct Answer ✔✔ PV = nRT
P = pressure (atms)
V = volume (Liters)
n = number of moles
R = constant, 8.314 J K^-1 mol ^-1
T = temperature (ALWAYS IN Kelvin)
What is Boyles Law? - Correct Answer ✔✔ Relates the pressure of gases to volume.
What is Charles Law? - Correct Answer ✔✔ Relates temperature and volume.
UPDATED CORRECT ANSWERS
PASSED 100% LATEST VERSION
What are the different levels of energy? - Correct Answer ✔✔ 1s < 2s < 2p < 3s < 3p <
4s < 3d < 4p < 5s < 4d < 5p < 6s
How do you convert Celsius to Fahrenheit? - Correct Answer ✔✔ Fahrenheit = (Celsius
x 9/5) + 32
How do you convert Fahrenheit to Celsius? - Correct Answer ✔✔ Celsius = (Fahrenheit
- 32) x 5/9
How do you convert Celsius to Kelvin? - Correct Answer ✔✔ Kelvin = Celsius + 273.15
How do you convert Kelvin to Celsius? - Correct Answer ✔✔ Celsius = Kelvin - 273.15
How do you convert Fahrenheit to Kelvin? - Correct Answer ✔✔ Kelvin = (Fahrenheit +
459.67) x 5/9
How do you convert Kelvin to Fahrenheit? - Correct Answer ✔✔ Fahrenheit = (Kelvin x
9/5) - 459.67
What is Hess's Law? - Correct Answer ✔✔ When reactants are converted to products,
the enthalpy of the reaction is the same, no matter if it occurs in one step, or a series of
steps.
What is the Pauli Exclusion Principle? - Correct Answer ✔✔ Each electron has a set of
4 numbers, called quantum numbers (q.n.'s.) that specify it completely. No two electrons
in the same atom can have the same 4 q.n.'s. The primary quantum number n tells you
which of the main energy levels you are in.
What is the principle of quantum number n? - Correct Answer ✔✔ Describes the
distance of the orbital from the nucleus. The larger the value the larger the distance of
the electron.
What is the magnetic quantum number ml? - Correct Answer ✔✔ Tells us the 3D
orientation of the orbital in space.
What is the electron spin quantum number ms? - Correct Answer ✔✔ Tells us the spin
direction of the electron, +1/2 or -1/2
, What is the angular momentum quantum number l? - Correct Answer ✔✔ This tells us
the shape.
Which areas of the periodic table belong to which orbital? - Correct Answer ✔✔ Groups
1 & 2 & Helium = s
Groups 3 through 12 = d
Groups 13 through 18 (not He) = p
What happens in terms of reactions throughout the periodic table? - Correct Answer ✔✔
The reactions are more vigorous as we go down, like in Group 1.
What are the reactive characteristics of group 7 - halogens? - Correct Answer ✔✔ They
are all very reactive because of their 7 valance electrons. They have very high
ionization energies & electron affinities. Fluorine is very reactive and known as the tiger
of chemistry. The reactivity is the opposite as the rest. It decreases as it goes down.
What kinds of atoms form together in a hybrid state? - Correct Answer ✔✔ Those who
do not normally look to bond together from number of valence electrons.
What is a hybrid state? - Correct Answer ✔✔ Moving the composition of electrons
throughout the s, p and d levels of electrons.
What are the 3 different kinds of hybridization? - Correct Answer ✔✔ sp: 2 s --- 1s 1p
sp2: 2s 1 p --- 1s 2p
sp3: 2s 2p --- 1s 3p
What is the purpose of hybridization? - Correct Answer ✔✔ To stabilize the atom.
What can carbon bond with as far as hybridization? - Correct Answer ✔✔ sp, sp2, sp3
Which equation relates pressure, temperature, volume and number of moles of gas? -
Correct Answer ✔✔ PV = nRT
P = pressure (atms)
V = volume (Liters)
n = number of moles
R = constant, 8.314 J K^-1 mol ^-1
T = temperature (ALWAYS IN Kelvin)
What is Boyles Law? - Correct Answer ✔✔ Relates the pressure of gases to volume.
What is Charles Law? - Correct Answer ✔✔ Relates temperature and volume.
