StraighterLine CHEM101 – Final Exam Questions
& Verified Answers (2025–2026) – Complete
Study Guide
Description:
This document contains the complete and verified answer key for
the StraighterLine CHEM101 Final Exam for the 2025–2026
academic year. It includes accurate definitions, formulas,
examples, and multiple-choice question explanations covering
general chemistry concepts. Topics span atomic theory, periodic
trends, stoichiometry, thermodynamics, acids and bases,
solutions, redox reactions, gas laws, and more. Ideal for final exam
preparation or comprehensive course review.
Questions and Answers:
polyprotic acid -Answer:-acids with more than one ionizable
hydrogen atom
functional group -Answer:-group of atoms that determines the
chemical properties of an organic compound
combustion -Answer:-____ of a hydrocarbon produces CO2 and
H2O
,refers to chemical combination with O
calcium -Answer:-most abundant metal in human body
excess reactant -Answer:-present in quantities greater than
necessary to react with the quantity of the limiting reactant
(actual yield / theoretical yield) x 100% -Answer:-equation for
percentage yield
aqueous -Answer:-dissolved in water
theoretical yield --Answer:-:-amount of product that will form if
all the limiting reactant is consumed by the desired reaction
actual yield -Answer:-amount of product actually recovered
[(n x atomic mass of element) / molecular or formulas mass of
compound] x 100% -Answer:-% by mass of an element
,solution -Answer:-A homogeneous mixture of two or more
substances
solvent -Answer:-the substance present in the largest amount
solute -Answer:-any substance present in a smaller amount
electrolyte -Answer:-a substance that dissolves in water to yield a
solution that conducts electricity
nonelectrolyte -Answer:-a substance that dissolves in water to
yield a solution that does not conduct electricity
Dissociation -Answer:-the process by which an ionic compound,
upon dissolution, breaks apart into its constituent ions
strong electrolyte -Answer:-An electrolyte that dissociates
completely
, weak electrolyte -Answer:-a compound that produces ions upon
dissolving but exists in solution predominantly as molecules that
are not ionized
HCl
HBr
HI
HNO3
HClO3
HClO4
H2SO4 or HSO4- -Answer:-7 strong acids
Solubility -Answer:-maximum amount of solute that will dissolve
in a given quantity of solvent at a specific temperature
strong acids -Answer:-HCl
HBr
HI
HNO3
HClO3
& Verified Answers (2025–2026) – Complete
Study Guide
Description:
This document contains the complete and verified answer key for
the StraighterLine CHEM101 Final Exam for the 2025–2026
academic year. It includes accurate definitions, formulas,
examples, and multiple-choice question explanations covering
general chemistry concepts. Topics span atomic theory, periodic
trends, stoichiometry, thermodynamics, acids and bases,
solutions, redox reactions, gas laws, and more. Ideal for final exam
preparation or comprehensive course review.
Questions and Answers:
polyprotic acid -Answer:-acids with more than one ionizable
hydrogen atom
functional group -Answer:-group of atoms that determines the
chemical properties of an organic compound
combustion -Answer:-____ of a hydrocarbon produces CO2 and
H2O
,refers to chemical combination with O
calcium -Answer:-most abundant metal in human body
excess reactant -Answer:-present in quantities greater than
necessary to react with the quantity of the limiting reactant
(actual yield / theoretical yield) x 100% -Answer:-equation for
percentage yield
aqueous -Answer:-dissolved in water
theoretical yield --Answer:-:-amount of product that will form if
all the limiting reactant is consumed by the desired reaction
actual yield -Answer:-amount of product actually recovered
[(n x atomic mass of element) / molecular or formulas mass of
compound] x 100% -Answer:-% by mass of an element
,solution -Answer:-A homogeneous mixture of two or more
substances
solvent -Answer:-the substance present in the largest amount
solute -Answer:-any substance present in a smaller amount
electrolyte -Answer:-a substance that dissolves in water to yield a
solution that conducts electricity
nonelectrolyte -Answer:-a substance that dissolves in water to
yield a solution that does not conduct electricity
Dissociation -Answer:-the process by which an ionic compound,
upon dissolution, breaks apart into its constituent ions
strong electrolyte -Answer:-An electrolyte that dissociates
completely
, weak electrolyte -Answer:-a compound that produces ions upon
dissolving but exists in solution predominantly as molecules that
are not ionized
HCl
HBr
HI
HNO3
HClO3
HClO4
H2SO4 or HSO4- -Answer:-7 strong acids
Solubility -Answer:-maximum amount of solute that will dissolve
in a given quantity of solvent at a specific temperature
strong acids -Answer:-HCl
HBr
HI
HNO3
HClO3
