CHEM 121 Final Exam Latest Update 2024-2025
155 Questions and 100% Verified Correct
Answers Actual Exam Guaranteed A+
As you progress to the right of the periodic table, what happens to the amount of
electronegativity? - CORRECT ANSWER: It increases as you move further to the right.
As you progress up the periodic table, what happens to the amount of electronegativity?
- CORRECT ANSWER: It increases as you move up and decreases down the rows.
How do you convert Celsius to Fahrenheit? - CORRECT ANSWER: Fahrenheit =
(Celsius x 9/5) + 32
How do you convert Celsius to Kelvin? - CORRECT ANSWER: Kelvin = Celsius +
273.15
How do you convert Fahrenheit to Celsius? - CORRECT ANSWER: Celsius =
(Fahrenheit - 32) x 5/9
How do you convert Fahrenheit to Kelvin? - CORRECT ANSWER: Kelvin = (Fahrenheit
+ 459.67) x 5/9
How do you convert Kelvin to Celsius? - CORRECT ANSWER: Celsius = Kelvin -
273.15
How do you convert Kelvin to Fahrenheit? - CORRECT ANSWER: Fahrenheit = (Kelvin
x 9/5) - 459.67
How do you name a nonmetal compound? - CORRECT ANSWER: Name the first
compound first and second compound second. The second compound has it's number
in the beginning.
,How do you name compounds? - CORRECT ANSWER: Write the element farther to the
left of the periodic table first. Then class the compound by it's family. EX. Cl = chloride.
What are some common conversions? - CORRECT ANSWER: mega = 10^6
kilo = 10^3
Hecto = 10^2
Deka = 10
deci = 10^-1
centi = 10^-2
Milli = 10^-3
Micro = 10^-6
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 are the different bonds of electronegativity? - CORRECT ANSWER: 0 = pure
covalent
2 or over 2 = pure ionic
0 < and >2 = polar covalent
What are the different levels of energy? - CORRECT ANSWER: 1s < 2s < 2p < 3s < 3p
< 4s < 3d < 4p < 5s < 4d < 5p < 6s
What are the different molecular geometries? - CORRECT ANSWER: Class Bond angle
, AB2: 2, linear, 180
AB3: 3, trigonal planar, 120,
AB4: 4, tetrahedral, 109,
AB5: 5, trigonal bipyramidal, 120, 90
AB6: 6, octahedral, 90
What are the prefixes for non metal compounds? - CORRECT ANSWER: 1 = mono
2 = di
3 = tri
4 = tetr(a)
5 = pent(a)
6 = hex(a)
7 = hept(a)
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 can carbon bond with as far as hybridization? - CORRECT ANSWER: sp, sp2,
sp3
What does it mean do have open surroundings? - CORRECT ANSWER: One that can
exchange energy to the surroundings freely
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