SCH4U Graded 12 CHemiStry Final exam 2026 UPdate
WitH COmPlete QUeStiOnS and COrreCt detailed anSWerS
(VeriFied anSWerS) |already Graded a+|Brand neW
VerSiOn!!
acidic buffer - anSWer-a solution which buffers the pH in the acidic region
acidic solution - anSWer-a solution having [H3O]>[OH]
acid ionization equation (of a weak acid) - anSWer-the equilibrium equation occurring
when a weak acid dissociates in water, having the form: HA + H2O <-> H3O + A
acid ionization constant - anSWer-the value of Ka for the equilibrium expression Ka=
[H3O][A]/[HA]
acid rain - anSWer-any precipitation with a pH less than 5.6
activated complex - anSWer-an intermediate molecule which occurs when reactants are
in the process of rearranging to form products
activation energy - anSWer-the minimum potential energy required to change reactants
into an activated complex
amphiprotic substance - anSWer-a substance which can act as either as an acid or a
base; apart from water, amphiprotic substances start with "H" and have a negative
charge
anion - anSWer-an ion having a negative charge
, anode - anSWer-the electrode at which oxidation occurs; the electrode receiving the
electrons from a substance being oxidized; the electrode toward which anions travel
Arrhenius acid - anSWer-any substance which releases H (aq) in water; any ionic
species whose formula starts with a "H"
Arrhenius base - anSWer-any substance which releases OH (aq) in water; any ionic
species whose formula ends with an "OH"
base ionization equation (of a weak base) - anSWer-the equilibrium equation occurring
when a weak base dissociates in water, having the form: B + H2O <-> HB +OH
base ionization constant - anSWer-the value of Kb for the equilibrium expression: Kb=
[HA][OH]/[A]
basic buffer - anSWer-a solution which buffers the pH in the basic region
basic solution - anSWer-a solution having [H3O]<[OH]
battery acid - anSWer-commercial term for sulphuric acid
binary salt - anSWer-a salt made of only two different elements, such as NaCl, KBr,
MgI2, AlF2, etc.
bond energy - anSWer-the amount of energy required to break a bond between two
atoms
Brønsted-Lowry acid - anSWer-a substance which donates a proton to another
substance
WitH COmPlete QUeStiOnS and COrreCt detailed anSWerS
(VeriFied anSWerS) |already Graded a+|Brand neW
VerSiOn!!
acidic buffer - anSWer-a solution which buffers the pH in the acidic region
acidic solution - anSWer-a solution having [H3O]>[OH]
acid ionization equation (of a weak acid) - anSWer-the equilibrium equation occurring
when a weak acid dissociates in water, having the form: HA + H2O <-> H3O + A
acid ionization constant - anSWer-the value of Ka for the equilibrium expression Ka=
[H3O][A]/[HA]
acid rain - anSWer-any precipitation with a pH less than 5.6
activated complex - anSWer-an intermediate molecule which occurs when reactants are
in the process of rearranging to form products
activation energy - anSWer-the minimum potential energy required to change reactants
into an activated complex
amphiprotic substance - anSWer-a substance which can act as either as an acid or a
base; apart from water, amphiprotic substances start with "H" and have a negative
charge
anion - anSWer-an ion having a negative charge
, anode - anSWer-the electrode at which oxidation occurs; the electrode receiving the
electrons from a substance being oxidized; the electrode toward which anions travel
Arrhenius acid - anSWer-any substance which releases H (aq) in water; any ionic
species whose formula starts with a "H"
Arrhenius base - anSWer-any substance which releases OH (aq) in water; any ionic
species whose formula ends with an "OH"
base ionization equation (of a weak base) - anSWer-the equilibrium equation occurring
when a weak base dissociates in water, having the form: B + H2O <-> HB +OH
base ionization constant - anSWer-the value of Kb for the equilibrium expression: Kb=
[HA][OH]/[A]
basic buffer - anSWer-a solution which buffers the pH in the basic region
basic solution - anSWer-a solution having [H3O]<[OH]
battery acid - anSWer-commercial term for sulphuric acid
binary salt - anSWer-a salt made of only two different elements, such as NaCl, KBr,
MgI2, AlF2, etc.
bond energy - anSWer-the amount of energy required to break a bond between two
atoms
Brønsted-Lowry acid - anSWer-a substance which donates a proton to another
substance
