SCH4U GRADE 12 CHEMISTRY FINAL
ACTUAL EXAM PAPER 2026 QUESTIONS
WITH ANSWERS GRADED A+
◍ weak acid.
Answer: Substances capable of donating hydrogen but do not completely
ionize in solution
◍ Q39: Identify the following as homogenous or heterogeneousa) airb) saladc)
sodad) milk.
Answer: a) Homogenousb) Heterogeneousc) Homogenousd) Heterogeneous
◍ molecular formula.
Answer: shows the number of atoms of each element present in a molecule
◍ When added to a sealed flask and heated, 6.0 g of carbon and 16.0 g of
oxygen react to form 22.0 of carbon dioxide. How much carbon dioxide is
formed when 24.0 g of carbon is reacted with 100.0 g of oxygen?.
Answer: 88.0
◍ The table below gives the data that is needed to calculate the average atomic
mass of element B.Isotope Atomic mass (amu) Relative abundance (%)B-10
10.01 19.91B-11 11.01 80.09Based on these data, what is the average
atomic mass of element B?.
Answer: A. 10.01B. 10.51C. 10.81D. 11.01C. 10.81
◍ valence electrons.
Answer: The electrons in the outermost shell of an atom
◍ strong acid.
Answer: an acid that ionizes completely in aqueous solution
◍ Q62: Explain what happens to volume and pressure as the temperature of a
, gas is raised.
Answer: The volume stays the same, but the pressure goes up
◍ Q64: Explains what happens to gas when you decrease the pressure..
Answer: Decreases the number of collisions and the reaction rate would
decrease
◍ Dissociation.
Answer: the separation of ions that occurs when an ionic compound
dissolves
◍ synthesis reaction.
Answer: a reaction in which two or more substances combine to form a new
compound
◍ Nitrate.
Answer: NO₃⁻
◍ transition metals.
Answer: Groups 3-12, 1-2 electrons in the outer energy level, less reactive
than alsali-earth metals, shiny, good conductor of thermal energy and
electrical current, high density
◍ Which proportionality shows the result of combining Avogadro's law with
Boyle's law?.
Answer: A. mc029-1.jpgB. mc029-2.jpgC. mc029-3.jpgD. mc029-4.jpgB.
mc029-2.jpg
◍ Ethane.
Answer:
◍ Q70: Write the formula for Molarity?.
Answer: M (Molarity) = Moles of Solute / Liters of Solution
◍ Q2: What is Density? What are the Units of Density?.
Answer: The ratio of the mass of an object to its volume.Density = Mass /
VolumeThe SI unit for Density is Kilograms per cubic meter (kg/m^3)
◍ Which halogen is the most reactive element?.
, Answer: Fluorine
◍ Q87: Define solute.
Answer: The dissolved particles in a solution
◍ equilibrium.
Answer: when the reactants and products are in a constant ratio. The forward
reaction and the reverse reactions occur at the same rate when a system is in
this state
◍ A nuclear reaction that involves combining two smaller atomic nuclei into
one larger nucleus is a fission reaction..
Answer: fusion
◍ The process in which an element in a reaction loses electrons is called
what?.
Answer: Oxidation
◍ also called the paraffin series.
Answer: C. alkanes
◍ Which periodic property determines whether an ionic or a covalent bond
will form between two elements?.
Answer: c. electronegativity
◍ Q6: The charges of the three sub-atomic particles are?.
Answer: 1) Electrons (negatively charged)2) Protons (positively charged)3)
Neutrons (no charge)
◍ Q12: Explain Rutherford's experiment. What did he discover?.
Answer: Gold-Foil experiment: He aimed a beam of alpha particles at a
sheet of gold foil surrounded by a fluorescent screen. Most of the particles
passed through the foil with no deflection at all. A few particles were greatly
deflected.He concluded that most of the alpha particles pass through the
Gold foil because the atom is mostly empty space. The mass and positive
charge are concentrated in a small region of the atom. Rutherford called this
region the nucleus
ACTUAL EXAM PAPER 2026 QUESTIONS
WITH ANSWERS GRADED A+
◍ weak acid.
Answer: Substances capable of donating hydrogen but do not completely
ionize in solution
◍ Q39: Identify the following as homogenous or heterogeneousa) airb) saladc)
sodad) milk.
Answer: a) Homogenousb) Heterogeneousc) Homogenousd) Heterogeneous
◍ molecular formula.
Answer: shows the number of atoms of each element present in a molecule
◍ When added to a sealed flask and heated, 6.0 g of carbon and 16.0 g of
oxygen react to form 22.0 of carbon dioxide. How much carbon dioxide is
formed when 24.0 g of carbon is reacted with 100.0 g of oxygen?.
Answer: 88.0
◍ The table below gives the data that is needed to calculate the average atomic
mass of element B.Isotope Atomic mass (amu) Relative abundance (%)B-10
10.01 19.91B-11 11.01 80.09Based on these data, what is the average
atomic mass of element B?.
Answer: A. 10.01B. 10.51C. 10.81D. 11.01C. 10.81
◍ valence electrons.
Answer: The electrons in the outermost shell of an atom
◍ strong acid.
Answer: an acid that ionizes completely in aqueous solution
◍ Q62: Explain what happens to volume and pressure as the temperature of a
, gas is raised.
Answer: The volume stays the same, but the pressure goes up
◍ Q64: Explains what happens to gas when you decrease the pressure..
Answer: Decreases the number of collisions and the reaction rate would
decrease
◍ Dissociation.
Answer: the separation of ions that occurs when an ionic compound
dissolves
◍ synthesis reaction.
Answer: a reaction in which two or more substances combine to form a new
compound
◍ Nitrate.
Answer: NO₃⁻
◍ transition metals.
Answer: Groups 3-12, 1-2 electrons in the outer energy level, less reactive
than alsali-earth metals, shiny, good conductor of thermal energy and
electrical current, high density
◍ Which proportionality shows the result of combining Avogadro's law with
Boyle's law?.
Answer: A. mc029-1.jpgB. mc029-2.jpgC. mc029-3.jpgD. mc029-4.jpgB.
mc029-2.jpg
◍ Ethane.
Answer:
◍ Q70: Write the formula for Molarity?.
Answer: M (Molarity) = Moles of Solute / Liters of Solution
◍ Q2: What is Density? What are the Units of Density?.
Answer: The ratio of the mass of an object to its volume.Density = Mass /
VolumeThe SI unit for Density is Kilograms per cubic meter (kg/m^3)
◍ Which halogen is the most reactive element?.
, Answer: Fluorine
◍ Q87: Define solute.
Answer: The dissolved particles in a solution
◍ equilibrium.
Answer: when the reactants and products are in a constant ratio. The forward
reaction and the reverse reactions occur at the same rate when a system is in
this state
◍ A nuclear reaction that involves combining two smaller atomic nuclei into
one larger nucleus is a fission reaction..
Answer: fusion
◍ The process in which an element in a reaction loses electrons is called
what?.
Answer: Oxidation
◍ also called the paraffin series.
Answer: C. alkanes
◍ Which periodic property determines whether an ionic or a covalent bond
will form between two elements?.
Answer: c. electronegativity
◍ Q6: The charges of the three sub-atomic particles are?.
Answer: 1) Electrons (negatively charged)2) Protons (positively charged)3)
Neutrons (no charge)
◍ Q12: Explain Rutherford's experiment. What did he discover?.
Answer: Gold-Foil experiment: He aimed a beam of alpha particles at a
sheet of gold foil surrounded by a fluorescent screen. Most of the particles
passed through the foil with no deflection at all. A few particles were greatly
deflected.He concluded that most of the alpha particles pass through the
Gold foil because the atom is mostly empty space. The mass and positive
charge are concentrated in a small region of the atom. Rutherford called this
region the nucleus
