CHEM 121 FINAL EXAM QUESTIONS WITH
CORRECT VERIFIED ANSWERS/ BUNDLED TO EASE
AND BOOST YOUR STUDY/ NEWEST EDITION 2024
What are the different levels of energy? - ANSWER 1s < 2s < 2p < 3s < 3p < 4s < 3d < 4p < 5s < 4d < 5p <
6s
How do you convert Celsius to F...
CHEM 121 FINAL EXAM QUESTIONS WITH
CORRECT VERIFIED ANSWERS/ BUNDLED TO EASE
AND BOOST YOUR STUDY/ NEWEST EDITION 2024
What are the different levels of energy? - ANSWER 1s < 2s < 2p < 3s < 3p < 4s < 3d < 4p < 5s < 4d < 5p <
6s
How do you convert Celsius to Fahrenheit? - ANSWER Fahrenheit = (Celsius x 9/5) + 32
How do you convert Fahrenheit to Celsius? - ANSWER Celsius = (Fahrenheit - 32) x 5/9
How do you convert Celsius to Kelvin? - ANSWER Kelvin = Celsius + 273.15
How do you convert Kelvin to Celsius? - ANSWER Celsius = Kelvin - 273.15
How do you convert Fahrenheit to Kelvin? - ANSWER Kelvin = (Fahrenheit + 459.67) x 5/9
How do you convert Kelvin to Fahrenheit? - ANSWER Fahrenheit = (Kelvin x 9/5) - 459.67
What is Hess's Law? - 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? - 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? - 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? - ANSWER Tells us the 3D orientation of the orbital in space.
What is the electron spin quantum number ms? - ANSWER Tells us the spin direction of the electron,
+1/2 or -1/2
What is the angular momentum quantum number l? - ANSWER This tells us the shape.
Which areas of the periodic table belong to which orbital? - 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? - ANSWER The reactions are more
vigorous as we go down, like in Group 1.
What are the reactive characteristics of group 7 - halogens? - 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? - ANSWER Those who do not normally look to
bond together from number of valence electrons.
What is a hybrid state? - ANSWER Moving the composition of electrons throughout the s, p and d levels
of electrons.
What are the 3 different kinds of hybridization? - ANSWER sp: 2 s --- 1s 1p
sp2: 2s 1 p --- 1s 2p
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