3/30/26, 1:36 PM Straighterline CHEM101 Final Exam || 2026 (Actual Exam) Questions with verified Answers | FREQUENTLY MOST TESTED QUE…
Straighterline CHEM101 Final Exam || 2026 (Actual
Exam) Questions with verified Answers |
FREQUENTLY MOST TESTED QUESTIONS AND
VERIFIED SOLUTIONS @ 2026
Save
Terms in this set (314)
total number of neutrons and Mass Number
protons in an atom; # protons + #
electrons
Most nonmetallic elements are p
found in which block of the periodic
table?
Ernest Rutherford disproved J.J. Positive matter is concentrated in the central core
Thomson's plum-pudding model of
the atom by showing that...
Plants use up copious amounts of Potassium
which alkali metal, preventing most
of it from being washed out to sea?
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,3/30/26, 1:36 PM Straighterline CHEM101 Final Exam || 2026 (Actual Exam) Questions with verified Answers | FREQUENTLY MOST TESTED QUE…
What is the ratio of reactants and 2:1:1:2
products in the chemical equation?
__NaOH + __H2SO4 --> __Na2SO4 +
__H2O
What is Avogadro's number? the number of ATOMS in 12g of Carbon-12
1 g = 6.022 × 1023 amu
What is the reducing agent in the Mg
following equation?
Mg(s) + 2HCl(aq) -> MgCl2(aq) +
H2(g)
Which arrangement accurately (s) < (l) < (g)
describes the standard entropy
values at different phases?
What are the most stable isotopes? 2, 8, 20, 50, 82 or 126 protons
What element has been oxidized and S = oxidized
what element has been reduced? N = reduced
3CuS + 8HNO3 --> 3CuSO4 + 8NO +
4H2O
How do you convert from moles to multiply the atomic mass (grams) by the number of
grams? moles
How do you convert from grams to Divide the total number of grams by the atomic
moles? mass (grams) of 1 mole
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,3/30/26, 1:36 PM Straighterline CHEM101 Final Exam || 2026 (Actual Exam) Questions with verified Answers | FREQUENTLY MOST TESTED QUE…
measure of the amount of matter Mass
made from atoms of 2+ elements that Compound
are chemically bonded; cannot be
separated into simpler substances by
any physical process; can be
separated by a chemical reaction
Definite shape and volume Solid
Doesn't conform to shape of
container
Particles are very close together in
orderly fashion with little freedom of
motion
Definite volume, indefinite shape Liquid
Conforms to shape of the part of the
container it fills
Particles are close together but not
rigidly in position with freedom to
move past each other
No definite shape or volume Gas
Conforms to shape and volume of
container
Particles separated by distances very
large compared to size of particles
Color, melting point, boiling point Physical Property
Observed and measured without
changing identity of substance
Observed by performing a chemical Chemical Property
change
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, 3/30/26, 1:36 PM Straighterline CHEM101 Final Exam || 2026 (Actual Exam) Questions with verified Answers | FREQUENTLY MOST TESTED QUE…
Combination of 2+ elements, each Mixture
retains its identity and properties
Can be separated by physical means
into pure components without
changing identity of compounds
fixed composition and differs from a Pure Substance
mixture (every sample has same
properties and composition)
molecule with a charge Polyatomic Ion
contain more than 1 atom chemically
bonded together
atoms with charge formed by loss or ions
gain of an electron
positive ion, may have roman Cation
numeral
negative ion, element ends in -ide Anion
atom of an element that has a isotope
different mass because of a different
number of neutrons, but same
atomic number
total number of protons in an atom; Atomic Number
also indicates number of electrons
additional reactant that increases the Catalyst
rate of a reaction with a lower
activation energy
https://quizlet.com/1161997581/straighterline-chem101-final-exam-2026-actual-exam-questions-with-verified-answers-frequently-most-tested-questio… 4/34
Straighterline CHEM101 Final Exam || 2026 (Actual
Exam) Questions with verified Answers |
FREQUENTLY MOST TESTED QUESTIONS AND
VERIFIED SOLUTIONS @ 2026
Save
Terms in this set (314)
total number of neutrons and Mass Number
protons in an atom; # protons + #
electrons
Most nonmetallic elements are p
found in which block of the periodic
table?
Ernest Rutherford disproved J.J. Positive matter is concentrated in the central core
Thomson's plum-pudding model of
the atom by showing that...
Plants use up copious amounts of Potassium
which alkali metal, preventing most
of it from being washed out to sea?
https://quizlet.com/1161997581/straighterline-chem101-final-exam-2026-actual-exam-questions-with-verified-answers-frequently-most-tested-questio… 1/34
,3/30/26, 1:36 PM Straighterline CHEM101 Final Exam || 2026 (Actual Exam) Questions with verified Answers | FREQUENTLY MOST TESTED QUE…
What is the ratio of reactants and 2:1:1:2
products in the chemical equation?
__NaOH + __H2SO4 --> __Na2SO4 +
__H2O
What is Avogadro's number? the number of ATOMS in 12g of Carbon-12
1 g = 6.022 × 1023 amu
What is the reducing agent in the Mg
following equation?
Mg(s) + 2HCl(aq) -> MgCl2(aq) +
H2(g)
Which arrangement accurately (s) < (l) < (g)
describes the standard entropy
values at different phases?
What are the most stable isotopes? 2, 8, 20, 50, 82 or 126 protons
What element has been oxidized and S = oxidized
what element has been reduced? N = reduced
3CuS + 8HNO3 --> 3CuSO4 + 8NO +
4H2O
How do you convert from moles to multiply the atomic mass (grams) by the number of
grams? moles
How do you convert from grams to Divide the total number of grams by the atomic
moles? mass (grams) of 1 mole
https://quizlet.com/1161997581/straighterline-chem101-final-exam-2026-actual-exam-questions-with-verified-answers-frequently-most-tested-questio… 2/34
,3/30/26, 1:36 PM Straighterline CHEM101 Final Exam || 2026 (Actual Exam) Questions with verified Answers | FREQUENTLY MOST TESTED QUE…
measure of the amount of matter Mass
made from atoms of 2+ elements that Compound
are chemically bonded; cannot be
separated into simpler substances by
any physical process; can be
separated by a chemical reaction
Definite shape and volume Solid
Doesn't conform to shape of
container
Particles are very close together in
orderly fashion with little freedom of
motion
Definite volume, indefinite shape Liquid
Conforms to shape of the part of the
container it fills
Particles are close together but not
rigidly in position with freedom to
move past each other
No definite shape or volume Gas
Conforms to shape and volume of
container
Particles separated by distances very
large compared to size of particles
Color, melting point, boiling point Physical Property
Observed and measured without
changing identity of substance
Observed by performing a chemical Chemical Property
change
https://quizlet.com/1161997581/straighterline-chem101-final-exam-2026-actual-exam-questions-with-verified-answers-frequently-most-tested-questio… 3/34
, 3/30/26, 1:36 PM Straighterline CHEM101 Final Exam || 2026 (Actual Exam) Questions with verified Answers | FREQUENTLY MOST TESTED QUE…
Combination of 2+ elements, each Mixture
retains its identity and properties
Can be separated by physical means
into pure components without
changing identity of compounds
fixed composition and differs from a Pure Substance
mixture (every sample has same
properties and composition)
molecule with a charge Polyatomic Ion
contain more than 1 atom chemically
bonded together
atoms with charge formed by loss or ions
gain of an electron
positive ion, may have roman Cation
numeral
negative ion, element ends in -ide Anion
atom of an element that has a isotope
different mass because of a different
number of neutrons, but same
atomic number
total number of protons in an atom; Atomic Number
also indicates number of electrons
additional reactant that increases the Catalyst
rate of a reaction with a lower
activation energy
https://quizlet.com/1161997581/straighterline-chem101-final-exam-2026-actual-exam-questions-with-verified-answers-frequently-most-tested-questio… 4/34
