CHEM 101 EXAM 4 QUESTIONS WITH
CORRECT ANSWERS
chemical reaction - CORRECT ANSWER -
the transformation of one or more substances into different substances
gas evolution reactions - CORRECT ANSWER -reactions that occur in liquids and form gases
C8H18 - CORRECT ANSWER -octane (hydrocarbon)
combustion reactions - CORRECT ANSWER -
a reaction in which a substance reacts with oxygen, emitting heat and forming one or more oxyg
en-containing compounds
oxidation-reduction reactions - CORRECT ANSWER -
reaction where electrons are transferred from one substance to another
precipitation reactions - CORRECT ANSWER -reactions that form solid substances in water
exothermic reaction - CORRECT ANSWER -reaction that emits heat
endothermic reaction - CORRECT ANSWER -reaction that absorbs heat
evidence of a chemical reaction - CORRECT ANSWER -
color change, formation of a solid, formation of a gas, emission of light, emission or absorption
of heat
, aqueous solution - CORRECT ANSWER -a homogeneous mixture of a substance with water
strong electrolytes - CORRECT ANSWER -
substances that completely dissociate into ions in a solution
strong electrolyte solution - CORRECT ANSWER -
a solution containing a solute that dissociates into ions; therefore, a solution that conducts elect
ricity well
soluble - CORRECT ANSWER -dissolves in a solution
insoluble - CORRECT ANSWER -not soluble in water
solubility rules - CORRECT ANSWER -
a set of empirical rules used to determine whether an ionic compound is soluble
precipitate - CORRECT ANSWER -
an insoluble product formed through the reaction of two solutions containing soluble compoun
ds
molecular equation - CORRECT ANSWER -
a chemical equation showing the complete, neutral formulas for every compound in a reaction
complete ionic equations - CORRECT ANSWER -
a chemical equation showing all the species as they are actually present in solution
spectator ions - CORRECT ANSWER -
ions that do not participate in a reaction; they appear unchanged on both sides of a chemical eq
uations
CORRECT ANSWERS
chemical reaction - CORRECT ANSWER -
the transformation of one or more substances into different substances
gas evolution reactions - CORRECT ANSWER -reactions that occur in liquids and form gases
C8H18 - CORRECT ANSWER -octane (hydrocarbon)
combustion reactions - CORRECT ANSWER -
a reaction in which a substance reacts with oxygen, emitting heat and forming one or more oxyg
en-containing compounds
oxidation-reduction reactions - CORRECT ANSWER -
reaction where electrons are transferred from one substance to another
precipitation reactions - CORRECT ANSWER -reactions that form solid substances in water
exothermic reaction - CORRECT ANSWER -reaction that emits heat
endothermic reaction - CORRECT ANSWER -reaction that absorbs heat
evidence of a chemical reaction - CORRECT ANSWER -
color change, formation of a solid, formation of a gas, emission of light, emission or absorption
of heat
, aqueous solution - CORRECT ANSWER -a homogeneous mixture of a substance with water
strong electrolytes - CORRECT ANSWER -
substances that completely dissociate into ions in a solution
strong electrolyte solution - CORRECT ANSWER -
a solution containing a solute that dissociates into ions; therefore, a solution that conducts elect
ricity well
soluble - CORRECT ANSWER -dissolves in a solution
insoluble - CORRECT ANSWER -not soluble in water
solubility rules - CORRECT ANSWER -
a set of empirical rules used to determine whether an ionic compound is soluble
precipitate - CORRECT ANSWER -
an insoluble product formed through the reaction of two solutions containing soluble compoun
ds
molecular equation - CORRECT ANSWER -
a chemical equation showing the complete, neutral formulas for every compound in a reaction
complete ionic equations - CORRECT ANSWER -
a chemical equation showing all the species as they are actually present in solution
spectator ions - CORRECT ANSWER -
ions that do not participate in a reaction; they appear unchanged on both sides of a chemical eq
uations
