Grade 12: Chemistry

Here is a comprehensive contents outline for Grade 12 Chemistry, aligned with the British Columbia (BC) curriculum in Canada.

The BC Grade 12 Chemistry course is formally called Chemistry 12. It is a rigorous course that delves deeply into the rates and mechanisms of chemical reactions, chemical equilibrium, and the behavior of acids and bases. It is essential for students pursuing science, engineering, or health sciences at the university level.

The following outline breaks down the content into the core units as they are typically presented.

Chemistry 12 – Course Contents Outline

Big Ideas of the Course:

• Reactants must collide to form products, and the properties of the collision determine if the reaction will occur.

• Acids and bases are chemical opposites with distinct and definable properties.

• Oxidation and reduction are complementary processes that involve the transfer of electrons.

• Organic chemistry and its applications have significant implications for human health, society, and the environment.

Unit 1: Reaction Kinetics

• Key Concepts:

  • Reaction Rate: Measuring and calculating the rate of a chemical reaction.

  • Collision Theory: The requirements for a successful reaction (collision geometry, activation energy).

  • Reaction Mechanisms: Elementary steps, reaction intermediates, and rate-determining steps.

  • Factors Affecting Reaction Rate: Temperature, concentration, surface area, and catalysts.

• Curricular Competencies Focus: Questioning, Predicting, Planning, and Conducting.

Unit 2: Dynamic Equilibrium

• Key Concepts:

  • The Concept of Equilibrium: Reversible reactions, the state of dynamic equilibrium.

  • The Equilibrium Constant (K): The law of mass action, writing equilibrium constant expressions (Kc and Kp).

  • The Reaction Quotient (Q): Predicting the direction a reaction will proceed to reach equilibrium.

  • Le Châtelier’s Principle: Predicting how a system at equilibrium responds to changes in concentration, temperature, and pressure.

• Curricular Competencies Focus: Processing and analyzing data, Evaluating.

Unit 3: Solubility Equilibrium

• Key Concepts:

  • Solubility of Ionic Compounds: Saturated solutions and the dissolution-precipitation equilibrium.

  • The Solubility Product Constant (Ksp): Writing Ksp expressions and performing calculations involving molar solubility and Ksp.

  • The Ion Product (Qsp): Predicting whether a precipitate will form (comparison of Qsp vs. Ksp).

  • Common Ion Effect: How the presence of a common ion affects solubility.

• Curricular Competencies Focus: Applying and innovating, Problem-solving.

Unit 4: Acids, Bases, and Salts

• Key Concepts:

  • Acid-Base Theories: Arrhenius and Brønsted-Lowry theories (conjugate acid-base pairs).

  • The pH Scale: Calculating pH, pOH, [H₃O⁺], and [OH⁻].

  • Strong vs. Weak Acids/Bases: Ka and Kb acid and base dissociation constants.

  • Hydrolysis of Salts: Predicting whether a salt solution is acidic, basic, or neutral.

• Curricular Competencies Focus: Evaluating, Communicating.

Unit 5: Acid-Base Equilibrium

• Key Concepts:

  • Buffers: How buffer solutions work and how to calculate their pH (Henderson-Hasselbalch equation).

  • Titration Curves: Analyzing strong/weak acid-base titration curves and identifying the equivalence point.

  • Indicators: How acid-base indicators work and selecting an appropriate indicator for a titration.

• Curricular Competencies Focus: Processing and analyzing data, Applying and innovating.

Unit 6: Oxidation-Reduction (Redox) Reactions and Electrochemistry

• Key Concepts:

  • Redox Reactions: Identifying oxidizing and reducing agents, assigning oxidation numbers.

  • Balancing Redox Reactions: Using the half-reaction method (in acidic and basic solutions).

  • Electrochemical Cells:

    • Galvanic (Voltaic) Cells: Generating electrical energy from spontaneous redox reactions.

    • Electrolytic Cells: Using electrical energy to drive non-spontaneous redox reactions (electrolysis).

  • Standard Reduction Potentials: Calculating standard cell potential (E°cell) and predicting spontaneity.

• Curricular Competencies Focus: Applying and innovating, Communicating.

Additional Potential Topics (Varies by School/Teacher)

• Organic Chemistry (in greater depth): Reaction mechanisms, polymers, biochemistry.

• Aqueous Equilibrium (comprehensive): Combining solubility and acid-base concepts.

Curricular Competencies (The “Doing” of Science)

Throughout all units, students will be expected to develop these skills:

• Questioning and Predicting

• Planning and Conducting

• Processing and Analyzing Data and Information

• Evaluating

• Applying and Innovating

• Communicating

This outline provides a solid foundation for what a student can expect to learn in BC’s Chemistry 12 course. The emphasis is on quantitative problem-solving, understanding systems at equilibrium, and predicting the outcomes of chemical processes.