SCH4U GRADE 12 CHEMISTRY FINAL FINAL
TEST 2026 QUESTIONS WITH CORRECT
ANSWERS GRADED A+
◍ Q96: Give 3 characteristics of bases.
Answer: 1) Tastes bitter2) Produces an hydroxide ions when dissolved in
water3) Reduce the concentration of hydrogen ions in a solution.
◍ Q75: What are cohesion and adhesion?.
Answer: a. Cohesion: Cohesion is the attractive force between like
molecules. Cohesion is the measure of how well molecules 'stick' or group
together to themselvesb. Adhesion: Attraction between different substances
on either side of a phase boundary.------ A phase boundary is a surface
where two samples of matter with different properties are in contact. The
surface of a gas bubble in water or the surface of a crystal are examples of
phase boundaries.
◍ the flow of heat in a cold soft drink will be from.
Answer: the drink to the ice cubes
◍ Q40: Name the five basic types of reaction and give an example of each..
Answer: 1) Combination (Synthesis): Magnesium metal and Oxygen
combine to form the compound Magnesium Oxide2) Decomposition: HgO
breaks down into Hg and Ov23) Single-Replacement: Add a small piece of
potassium to water and it produces Hydrogen gas and a large quantity of
heat4) Double-Replacement: Mixing potassium iodide and lead nitrate in a
chemical reaction form a solid led iodide5) Combustion: Campfire, candle
◍ Q88: Define solvent.
Answer: In a solution, the dissolving medium is this
◍ Q37: Define homogenous.
, Answer: Uniform in composition: A mixture in which the composition is
uniform throughout. Another name for this is Solution
◍ Q15: What is an Isotope?.
Answer: Same number of protons by a different number of neutrons. e.g.
Carbon-12 versus Carbon-14Atoms of the same element that have different
numbers of neutrons
◍ Which of the following is the best reason that protons transfer reactions
favor the formation of weak acids and bases.
Answer: Strong acids and bases have weak conjugate bases and acids
◍ Q85: Looking at KCIOv3, if we put 20 grams of KCIOv3 in water at 40
degrees, would that be saturated, supersaturated, or unsaturated?.
Answer: Supersaturated
◍ Q43: What happens in a chemical reaction? How is a nuclear reaction
different? Give two examples of each.
Answer: Chemical Reaction: involves electrons and the rearrangement of
atoms (example: vinegar and baking soda, hydrogen and oxygen to make
water)Nuclear Reaction: involves changes of atoms into other atoms.
(example: fission and fusion)
◍ anion.
Answer: ions with a negative charge
◍ Mass.
Answer: kg (kilograms)
◍ Q76: What is Surface tension?.
Answer: A measure of how difficult it is to stretch or break the surface of a
liquid. A force that tends to pull adjacent parts of a liquid's surface together,
thereby decreasing surface area to the smallest possible size
◍ What term describes a solution that contains more solid than it could under
equilibrium conditions?.
Answer: supersaturated
, ◍ The density of O2 gas at STP is.
Answer: 1.43 g/L1. multiply atomic mass of Oxygen by 2 (O2) 15.9994 x
2= 31.99882. divide answer by atm 31.9988 ÷ 22.4= 1.428 (round)
◍ A sample of a substance burns more rapidly in pure oxygen than in air.
Which factor is most responsible for this high rate of reaction?.
Answer: the concentration of the reactants
◍ Lewis structures.
Answer: a way of representing molecular structures based on valence
electrons
◍ Biochemistry.
Answer: chemistry dealing with chemical compounds and processes in
living plants and animals
◍ Q7: The locations of the three sub-atomic particles are?.
Answer: Protons and Neutrons are located inside the positively charged
nucleusElectrons are distributed around the nucleus and occupy almost all
the volume of the atom
◍ What technique is used to separate the various components of petroleum?.
Answer: b. fractional distillation
◍ Q35: What is a chemical change?.
Answer: A change in the arrangement of atoms. A change that produces
matter with a different composition than the original matter
◍ what is produced during the metabolism of glucose.
Answer: CO2, H2O, and energy
◍ A sample of gas at STP is to be heated at constant pressure until its volume
triples. What will the final gas temperature be?.
Answer: 819
◍ kinetic energy.
Answer: energy due to movement
TEST 2026 QUESTIONS WITH CORRECT
ANSWERS GRADED A+
◍ Q96: Give 3 characteristics of bases.
Answer: 1) Tastes bitter2) Produces an hydroxide ions when dissolved in
water3) Reduce the concentration of hydrogen ions in a solution.
◍ Q75: What are cohesion and adhesion?.
Answer: a. Cohesion: Cohesion is the attractive force between like
molecules. Cohesion is the measure of how well molecules 'stick' or group
together to themselvesb. Adhesion: Attraction between different substances
on either side of a phase boundary.------ A phase boundary is a surface
where two samples of matter with different properties are in contact. The
surface of a gas bubble in water or the surface of a crystal are examples of
phase boundaries.
◍ the flow of heat in a cold soft drink will be from.
Answer: the drink to the ice cubes
◍ Q40: Name the five basic types of reaction and give an example of each..
Answer: 1) Combination (Synthesis): Magnesium metal and Oxygen
combine to form the compound Magnesium Oxide2) Decomposition: HgO
breaks down into Hg and Ov23) Single-Replacement: Add a small piece of
potassium to water and it produces Hydrogen gas and a large quantity of
heat4) Double-Replacement: Mixing potassium iodide and lead nitrate in a
chemical reaction form a solid led iodide5) Combustion: Campfire, candle
◍ Q88: Define solvent.
Answer: In a solution, the dissolving medium is this
◍ Q37: Define homogenous.
, Answer: Uniform in composition: A mixture in which the composition is
uniform throughout. Another name for this is Solution
◍ Q15: What is an Isotope?.
Answer: Same number of protons by a different number of neutrons. e.g.
Carbon-12 versus Carbon-14Atoms of the same element that have different
numbers of neutrons
◍ Which of the following is the best reason that protons transfer reactions
favor the formation of weak acids and bases.
Answer: Strong acids and bases have weak conjugate bases and acids
◍ Q85: Looking at KCIOv3, if we put 20 grams of KCIOv3 in water at 40
degrees, would that be saturated, supersaturated, or unsaturated?.
Answer: Supersaturated
◍ Q43: What happens in a chemical reaction? How is a nuclear reaction
different? Give two examples of each.
Answer: Chemical Reaction: involves electrons and the rearrangement of
atoms (example: vinegar and baking soda, hydrogen and oxygen to make
water)Nuclear Reaction: involves changes of atoms into other atoms.
(example: fission and fusion)
◍ anion.
Answer: ions with a negative charge
◍ Mass.
Answer: kg (kilograms)
◍ Q76: What is Surface tension?.
Answer: A measure of how difficult it is to stretch or break the surface of a
liquid. A force that tends to pull adjacent parts of a liquid's surface together,
thereby decreasing surface area to the smallest possible size
◍ What term describes a solution that contains more solid than it could under
equilibrium conditions?.
Answer: supersaturated
, ◍ The density of O2 gas at STP is.
Answer: 1.43 g/L1. multiply atomic mass of Oxygen by 2 (O2) 15.9994 x
2= 31.99882. divide answer by atm 31.9988 ÷ 22.4= 1.428 (round)
◍ A sample of a substance burns more rapidly in pure oxygen than in air.
Which factor is most responsible for this high rate of reaction?.
Answer: the concentration of the reactants
◍ Lewis structures.
Answer: a way of representing molecular structures based on valence
electrons
◍ Biochemistry.
Answer: chemistry dealing with chemical compounds and processes in
living plants and animals
◍ Q7: The locations of the three sub-atomic particles are?.
Answer: Protons and Neutrons are located inside the positively charged
nucleusElectrons are distributed around the nucleus and occupy almost all
the volume of the atom
◍ What technique is used to separate the various components of petroleum?.
Answer: b. fractional distillation
◍ Q35: What is a chemical change?.
Answer: A change in the arrangement of atoms. A change that produces
matter with a different composition than the original matter
◍ what is produced during the metabolism of glucose.
Answer: CO2, H2O, and energy
◍ A sample of gas at STP is to be heated at constant pressure until its volume
triples. What will the final gas temperature be?.
Answer: 819
◍ kinetic energy.
Answer: energy due to movement
