AP CHEMISTRY UNIT 2 EXAM 2025
combination reactions - ✅✅✅CORRECT -two ore more substances react to form one product
decomposition reactions - ✅✅✅CORRECT -one substance breaks down into two more substances
combustion reactions - ✅✅✅CORRECT -rapid reactions that produce a falme, most often involve
hydrocarbons reacting with oxygen int he air, producing Carbon Dioxide and water
dissociation - ✅✅✅CORRECT -when an ionic substance dissolves in water, the solvent pulls the
individual ions from the crystal and solvates them
electrolytes - ✅✅✅CORRECT -substances that dissociate into ions when dissolved in water
nonelectrolytes - ✅✅✅CORRECT -a substance that may dissolve in water, but it does not dissociate
into ions when it does so
electrolytes - ✅✅✅CORRECT -soluble ionic compounds tend to be what?
nonelectrolytes - ✅✅✅CORRECT -molecular compounds tend to be what, except for acids and
bases?
strong electrolyte - ✅✅✅CORRECT -a substance that dissociates completely when dissolved in water
weak electrolyte - ✅✅✅CORRECT -a substance that only dissociates partially when dissolves in
water
HCl, HBr, HI, HClO4, HClO3, HNO3, H2SO4 - ✅✅✅CORRECT -name strong acids
acids and bases and soluble ionic salts - ✅✅✅CORRECT -strong electrolytes are strong what
, TRUE. - ✅✅✅CORRECT -STRONG BASES ARE GROUP 1A HYDROXIDES AND CALCIUM STRONTIUM
AND BARIUM.
precipitate - ✅✅✅CORRECT -when one mixes ions that form compounds that are insoluble (as could
be predicted by the solubility guidelines), what is formed?
transpose - ✅✅✅CORRECT -Metathesis comes from a Greek word that means to what, they are
exchange reactions
molecular equation - ✅✅✅CORRECT -what is the molecular equation that lists the reactants and
products in their molecular form
ionic equation - ✅✅✅CORRECT -all strong electrolytes are dissociated into their ions in what
equation; more accurately reflects the species that are found in the reaction mixture
net ionic equation - ✅✅✅CORRECT -to form what equation, cross out anything that does not change
from the left side of the equation to the right?
spectator ions - ✅✅✅CORRECT -What are the things that didn't change in a net ionic equation,
deleted from net ionic equation?
oxidation - ✅✅✅CORRECT -occurs when an atom or ion loses electrons
reduction - ✅✅✅CORRECT -occurs when an atom or ion gains electrons
True. - ✅✅✅CORRECT -Oxidation and reduction cannot occur without the other, as the substance
oxidized loses the electron that the reduced substance gains.
0 - ✅✅✅CORRECT -Elements in their elemental form have an oxidation number of what?
True. - ✅✅✅CORRECT -The oxidation number of a monatomic ion is the same as its charge.
combination reactions - ✅✅✅CORRECT -two ore more substances react to form one product
decomposition reactions - ✅✅✅CORRECT -one substance breaks down into two more substances
combustion reactions - ✅✅✅CORRECT -rapid reactions that produce a falme, most often involve
hydrocarbons reacting with oxygen int he air, producing Carbon Dioxide and water
dissociation - ✅✅✅CORRECT -when an ionic substance dissolves in water, the solvent pulls the
individual ions from the crystal and solvates them
electrolytes - ✅✅✅CORRECT -substances that dissociate into ions when dissolved in water
nonelectrolytes - ✅✅✅CORRECT -a substance that may dissolve in water, but it does not dissociate
into ions when it does so
electrolytes - ✅✅✅CORRECT -soluble ionic compounds tend to be what?
nonelectrolytes - ✅✅✅CORRECT -molecular compounds tend to be what, except for acids and
bases?
strong electrolyte - ✅✅✅CORRECT -a substance that dissociates completely when dissolved in water
weak electrolyte - ✅✅✅CORRECT -a substance that only dissociates partially when dissolves in
water
HCl, HBr, HI, HClO4, HClO3, HNO3, H2SO4 - ✅✅✅CORRECT -name strong acids
acids and bases and soluble ionic salts - ✅✅✅CORRECT -strong electrolytes are strong what
, TRUE. - ✅✅✅CORRECT -STRONG BASES ARE GROUP 1A HYDROXIDES AND CALCIUM STRONTIUM
AND BARIUM.
precipitate - ✅✅✅CORRECT -when one mixes ions that form compounds that are insoluble (as could
be predicted by the solubility guidelines), what is formed?
transpose - ✅✅✅CORRECT -Metathesis comes from a Greek word that means to what, they are
exchange reactions
molecular equation - ✅✅✅CORRECT -what is the molecular equation that lists the reactants and
products in their molecular form
ionic equation - ✅✅✅CORRECT -all strong electrolytes are dissociated into their ions in what
equation; more accurately reflects the species that are found in the reaction mixture
net ionic equation - ✅✅✅CORRECT -to form what equation, cross out anything that does not change
from the left side of the equation to the right?
spectator ions - ✅✅✅CORRECT -What are the things that didn't change in a net ionic equation,
deleted from net ionic equation?
oxidation - ✅✅✅CORRECT -occurs when an atom or ion loses electrons
reduction - ✅✅✅CORRECT -occurs when an atom or ion gains electrons
True. - ✅✅✅CORRECT -Oxidation and reduction cannot occur without the other, as the substance
oxidized loses the electron that the reduced substance gains.
0 - ✅✅✅CORRECT -Elements in their elemental form have an oxidation number of what?
True. - ✅✅✅CORRECT -The oxidation number of a monatomic ion is the same as its charge.
