Alberta · Grade 12

Chemistry 30

  • SCN3796

Alberta’s Grade 12 science course, from Thermochemical Changes to Chemical Equilibrium Focusing on Acid–Base Systems.

Units
4
Lessons
15
Skills
52
Provincial exam
30% of the final mark
Official curriculum
Alberta Education

Unit by unit

Every skill in the course, with its official code.

Unit 1 · 14 skills

Thermochemical Changes

Heat, Enthalpy & the Origin of Stored Energy

  • Analyzing heat transfer with Q = mcΔt

    I can use Q=mcΔtQ = mc\Delta t to calculate the heat transferred in a temperature change.

    Official code: 30-A1.1k

  • Stored chemical energy came from the sun

    I can explain how the energy stored in hydrocarbon bonds originally came from the sun.

    Official code: 30-A1.2k

  • Enthalpy and molar enthalpy

    I can define enthalpy and molar enthalpy for a chemical reaction.

    Official code: 30-A1.3k

  • Balanced equations that include energy changes

    I can write balanced equations that include the energy change.

    Official code: 30-A1.4k

ΔH Notation, Formation Enthalpies & Hess's Law

  • Using and interpreting ΔH notation

    I can use and interpret ΔH\Delta H notation to communicate energy changes.

    Official code: 30-A1.5k

  • Predicting ΔH from standard enthalpies of formation

    I can predict a reaction's enthalpy change using standard enthalpies of formation.

    Official code: 30-A1.6k

  • Hess's law for net reactions

    I can use Hess's law to find a net reaction's enthalpy from a series of reactions.

    Official code: 30-A1.7k

  • Enthalpy changes from calorimetry data

    I can use calorimetry data to determine a reaction's enthalpy change.

    Official code: 30-A1.8k

Photosynthesis, Respiration, Combustion & the Energy Barrier

  • Reactants and products of key energy reactions

    I can identify the reactants and products of photosynthesis, cellular respiration and hydrocarbon combustion.

    Official code: 30-A1.9k

  • Classifying reactions as endothermic or exothermic

    I can classify reactions — including photosynthesis, respiration and combustion — as endothermic or exothermic.

    Official code: 30-A1.10k

  • Activation energy as the energy barrier

    I can define activation energy as the barrier a reaction must overcome.

    Official code: 30-A2.1k

  • Energy changes from bonds breaking and forming

    I can explain a reaction's energy change in terms of bonds breaking and forming.

    Official code: 30-A2.2k

Energy Diagrams & Catalysts

  • Analyzing and labelling energy diagrams

    I can analyze and label a potential-energy diagram of a reaction.

    Official code: 30-A2.3k

  • How catalysts speed reactions

    I can explain how a catalyst increases reaction rate without changing the net energy.

    Official code: 30-A2.4k

The official wording · 14 outcomes
30-A1.1k
recall the application of Q = mcΔt to the analysis of heat transfer
30-A1.2k
explain, in a general way, how stored energy in the chemical bonds of hydrocarbons originated from the sun
30-A1.3k
define enthalpy and molar enthalpy for chemical reactions
30-A1.4k
write balanced equations for chemical reactions that include energy changes
30-A1.5k
use and interpret ΔH notation to communicate and calculate energy changes in chemical reactions
30-A1.6k
predict the enthalpy change for chemical equations using standard enthalpies of formation
30-A1.7k
explain and use Hess' law to calculate energy changes for a net reaction from a series of reactions
30-A1.8k
use calorimetry data to determine the enthalpy changes in chemical reactions
30-A1.9k
identify that liquid water and carbon dioxide gas are reactants in photosynthesis and products of cellular respiration and that gaseous water and carbon dioxide gas are the products of hydrocarbon combustion in an open system
30-A1.10k
classify chemical reactions as endothermic or exothermic, including those for the processes of photosynthesis, cellular respiration and hydrocarbon combustion
30-A2.1k
define activation energy as the energy barrier that must be overcome for a chemical reaction to occur
30-A2.2k
explain the energy changes that occur during chemical reactions, referring to bonds breaking and forming and changes in potential and kinetic energy
30-A2.3k
analyze and label energy diagrams of a chemical reaction, including reactants, products, enthalpy change and activation energy
30-A2.4k
explain that catalysts increase reaction rates by providing alternate pathways for changes, without affecting the net amount of energy involved

Key ideas

  1. Q=mcΔtQ = mc\Delta t: heat (QQ) equals mass (mm) times specific heat capacity (cc) times temperature change (Δt\Delta t); water's c=4.19 J/g°Cc = 4.19\ \text{J/g°C}.

  2. ΔH\Delta H is negative for exothermic reactions (energy released) and positive for endothermic reactions (energy absorbed).

  3. Photosynthesis takes in CO2\text{CO}_2 and liquid H2O\text{H}_2\text{O} to build glucose and O2\text{O}_2; cellular respiration is essentially its reverse, producing CO2\text{CO}_2 and water.

  4. A potential-energy diagram plots energy along the reaction path: reactants start at one level, climb to the activated complex (top of the barrier), then fall to the products.

  5. A positive Δt\Delta t means the substance absorbed heat; a negative Δt\Delta t means it released heat.

Watch out for

  • Confusing heat (QQ, in joules) with temperature (tt, in °C) — they are different quantities.
  • Thinking a negative ΔH\Delta H means the reaction absorbs energy (negative means it RELEASES energy — exothermic).
  • Thinking respiration and combustion are unrelated (respiration is a slow, controlled combustion of glucose).

Every skill’s key ideas, worked examples and checks are in MapleMind.Practise this unit

Unit 2 · 16 skills

Electrochemical Changes

Oxidation, Reduction & Redox Vocabulary

  • Defining oxidation and reduction

    I can define oxidation and reduction operationally and theoretically.

    Official code: 30-B1.1k

  • Redox terms: agents, oxidation number, half-reactions

    I can define oxidizing agent, reducing agent, oxidation number, half-reaction and disproportionation.

    Official code: 30-B1.2k

  • Telling redox reactions apart from other reactions

    I can tell a redox reaction from a non-redox reaction.

    Official code: 30-B1.3k

  • Redox in living and nonliving systems

    I can identify electron transfer and the agents in everyday redox reactions.

    Official code: 30-B1.4k

Agent Strength & Predicting Spontaneity

  • Comparing strengths of oxidizing and reducing agents

    I can compare the strengths of oxidizing and reducing agents from empirical data.

    Official code: 30-B1.5k

  • Predicting spontaneity from reduction potentials

    I can predict the spontaneity of a redox reaction from standard reduction potentials.

    Official code: 30-B1.6k

Balancing Redox Equations & Redox Titrations

Electrochemical Cells: Parts & Types

  • The parts of an electrochemical cell

    I can define the parts of an electrochemical cell.

    Official code: 30-B2.1k

  • Voltaic vs electrolytic cells

    I can identify the similarities and differences between voltaic and electrolytic cells.

    Official code: 30-B2.2k

  • Predicting the half-reaction at each electrode

    I can predict and write the half-reaction at each electrode.

    Official code: 30-B2.3k

  • When predicted reactions do not occur

    I can recognize that a predicted reaction does not always occur.

    Official code: 30-B2.4k

Cell Potential, Predictions & Faraday's Law

  • Reduction potentials relative to the hydrogen electrode

    I can explain that reduction potentials are all relative to the hydrogen electrode set at 0 volts.

    Official code: 30-B2.5k

  • Calculating standard cell potential

    I can calculate the standard cell potential of an electrochemical cell.

    Official code: 30-B2.6k

  • Spontaneity from cell potential

    I can predict spontaneity from the standard cell potential and the table positions.

    Official code: 30-B2.7k

  • Faraday's law and cell stoichiometry

    I can use Faraday's law and stoichiometry to find mass, amount, current or time in a cell.

    Official code: 30-B2.8k

The official wording · 16 outcomes
30-B1.1k
define oxidation and reduction operationally and theoretically
30-B1.2k
define oxidizing agent, reducing agent, oxidation number, half-reaction, disproportionation
30-B1.3k
differentiate between redox reactions and other reactions, using half-reactions and/or oxidation numbers
30-B1.4k
identify electron transfer, oxidizing agents and reducing agents in redox reactions that occur in everyday life, in both living systems
30-B1.5k
compare the relative strengths of oxidizing and reducing agents, using empirical data
30-B1.6k
predict the spontaneity of a redox reaction, based on standard reduction potentials, and compare their predictions to experimental results
30-B1.7k
write and balance equations for redox reactions in acidic and neutral solutions by using half-reaction equations obtained from a standard reduction potential table
30-B1.8k
perform calculations to determine quantities of substances involved in redox titrations
30-B2.1k
define anode, cathode, anion, cation, salt bridge/porous cup, electrolyte, external circuit, power supply, voltaic cell and electrolytic cell
30-B2.2k
identify the similarities and differences between the operation of a voltaic cell and that of an electrolytic cell
30-B2.3k
predict and write the half-reaction equation that occurs at each electrode in an electrochemical cell
30-B2.4k
recognize that predicted reactions do not always occur; e.g., the production of chlorine gas from the electrolysis of brine
30-B2.5k
explain that the values of standard reduction potential are all relative to 0 volts, as set for the hydrogen electrode at standard conditions
30-B2.6k
calculate the standard cell potential for electrochemical cells
30-B2.7k
predict the spontaneity or nonspontaneity of redox reactions, based on standard cell potential, and the relative positions of half-reaction equations on a standard reduction potential table
30-B2.8k
calculate mass, amounts, current and time in single voltaic and electrolytic cells by applying Faraday's law and stoichiometry

Key ideas

  1. Theoretically: oxidation is LOSS of electrons, reduction is GAIN ("OIL RIG" — Oxidation Is Loss, Reduction Is Gain).

  2. If metal A displaces metal B from solution, A is the stronger reducing agent; single-replacement experiments rank the agents.

  3. Split the reaction into oxidation and reduction half-reactions, balance atoms and charge (adding H+\text{H}^+/H2O\text{H}_2\text{O} in acidic solution), then scale so electrons lost equal electrons gained.

  4. Oxidation happens at the ANODE, reduction at the CATHODE ("An Ox, Red Cat"); anions and cations are negative and positive ions.

  5. No single electrode potential can be measured alone, so the standard hydrogen electrode is DEFINED as exactly 0 V at standard conditions.

Watch out for

  • Thinking oxidation is only about gaining oxygen (it is defined by electron LOSS — oxygen need not be involved).
  • Confusing a stronger oxidizing agent with a stronger reducing agent — they are opposite ends of the electron transfer.
  • Forgetting to make electrons lost equal electrons gained before adding the halves.

Every skill’s key ideas, worked examples and checks are in MapleMind.Practise this unit

Unit 3 · 11 skills

Chemical Changes of Organic Compounds

What Organic Compounds Are & Naming Them

  • Defining organic compounds

    I can define organic compounds and recognize the inorganic carbon exceptions.

    Official code: 30-C1.1k

  • Significant organic compounds in daily life

    I can identify significant everyday organic compounds and their uses.

    Official code: 30-C1.2k

  • IUPAC naming and drawing organic structures

    I can name and draw organic structures using IUPAC rules.

    Official code: 30-C1.3k

  • Identifying compound types from functional groups

    I can identify a compound's type from its functional group.

    Official code: 30-C1.4k

Isomers, Physical Properties & Separation

  • Structural isomerism

    I can define structural isomerism and relate structure to properties.

    Official code: 30-C1.5k

  • Comparing boiling points and solubility

    I can compare boiling points and solubility across and within organic families.

    Official code: 30-C1.6k

  • Separating organic compounds from mixtures

    I can describe how organic compounds are separated from natural mixtures.

    Official code: 30-C1.7k

Organic Reactions, Polymers & Fossil Fuels

  • The five organic reaction types

    I can define and illustrate addition, substitution, elimination, esterification and combustion reactions.

    Official code: 30-C2.1k

  • Predicting products and balancing organic equations

    I can predict products and write balanced equations for organic reactions.

    Official code: 30-C2.2k

  • Monomers, polymers and polymerization

    I can define monomers, polymers and polymerization with examples.

    Official code: 30-C2.3k

  • Organic reactions and the fossil-fuel economy

    I can relate organic reactions to thermal energy and important compounds from fossil fuels.

    Official code: 30-C2.4k

The official wording · 11 outcomes
30-C1.1k
define organic compounds as compounds containing carbon, recognizing inorganic exceptions such as carbonates, cyanides, carbides and oxides of carbon
30-C1.2k
identify and describe significant organic compounds in daily life, demonstrating generalized knowledge of their origins and applications
30-C1.3k
name and draw structural, condensed structural and line diagrams and formulas, using International Union of Pure and Applied Chemistry (IUPAC) nomenclature guidelines
30-C1.4k
identify types of compounds from the hydroxyl, carboxyl, ester linkage and halogen functional groups, given the structural formula
30-C1.5k
define structural isomerism as compounds having the same molecular formulas, but with different structural formulas, and relate the structures to variations in the properties of the isomers
30-C1.6k
compare, both within a homologous series and among compounds with different functional groups, the boiling points and solubility of examples of aliphatics, aromatics, alcohols and carboxylic acids
30-C1.7k
describe, in general terms, the physical, chemical and technological processes (fractional distillation and solvent extraction) used to separate organic compounds from natural mixtures or solutions
30-C2.1k
define, illustrate and provide examples of simple addition, substitution, elimination, esterification and combustion reactions
30-C2.2k
predict products and write and interpret balanced equations for the above reactions
30-C2.3k
define, illustrate and provide examples of monomers (e.g., ethylene), polymers (e.g., polyethylene) and polymerization in living systems
30-C2.4k
relate the reactions described above to major reactions that produce thermal energy and economically important compounds from fossil fuels

Key ideas

  1. Organic compounds contain carbon (usually bonded to hydrogen), but a few carbon compounds are traditionally INORGANIC: carbonates, cyanides, carbides and oxides of carbon (CO\text{CO}, CO2\text{CO}_2).

  2. Structural isomers share the same molecular formula but have different structural formulas (different connectivity); e.g. butane and 2-methylpropane are both C4H10\text{C}_4\text{H}_{10}.

  3. Addition adds atoms across a double bond; substitution swaps one atom/group for another; elimination removes atoms to form a double bond; esterification joins an acid and an alcohol; combustion burns a hydrocarbon.

  4. The huge variety of organic compounds comes from carbon's ability to form four bonds and long chains or rings.

  5. Different arrangements give different properties — boiling point, reactivity — even with identical formulas.

Watch out for

  • Thinking every carbon-containing compound is organic (CO2\text{CO}_2, carbonates and cyanides are exceptions).
  • Thinking the same molecular formula must mean the same substance (isomers differ in structure and properties).
  • Confusing addition (needs a double/triple bond) with substitution (on a saturated compound).

Every skill’s key ideas, worked examples and checks are in MapleMind.Practise this unit

Unit 4 · 11 skills

Chemical Equilibrium Focusing on Acid–Base Systems

Equilibrium & Le Chatelier's Principle

  • Defining equilibrium and its criteria

    I can define equilibrium and state its criteria.

    Official code: 30-D1.1k

  • Writing equations for systems at equilibrium

    I can identify, write and interpret equations for systems at equilibrium.

    Official code: 30-D1.2k

  • Le Chatelier's principle

    I can use Le Chatelier's principle to predict how an equilibrium shifts.

    Official code: 30-D1.3k

  • The equilibrium constant Kc and equilibrium-law expressions

    I can define KcK_c and write equilibrium-law expressions.

    Official code: 30-D1.4k

Brønsted–Lowry Acids, Bases & Buffers

  • Brønsted–Lowry acids and bases

    I can describe Brønsted–Lowry acids as proton donors and bases as proton acceptors.

    Official code: 30-D1.5k

  • Writing Brønsted–Lowry equations and predicting the favoured side

    I can write Brønsted–Lowry equations and predict whether reactants or products are favoured.

    Official code: 30-D1.6k

  • Conjugate pairs and amphiprotic substances

    I can identify conjugate acid-base pairs and amphiprotic substances.

    Official code: 30-D1.7k

  • Buffers

    I can define a buffer and explain how it resists pH change.

    Official code: 30-D1.8k

Equilibrium Constants: Kw, Ka, Kb & pH Calculations

  • Recalling pH, pOH and ion concentration

    I can recall pH, pOH and their link to ion concentrations.

    Official code: 30-D2.1k

  • Using Kw, Ka and Kb

    I can define KwK_w, KaK_a and KbK_b and use them to find pH, pOH and ion concentrations.

    Official code: 30-D2.2k

  • Equilibrium constant and concentration calculations

    I can calculate equilibrium constants and concentrations from equilibrium data.

    Official code: 30-D2.3k

The official wording · 11 outcomes
30-D1.1k
define equilibrium and state the criteria that apply to a chemical system in equilibrium; i.e., closed system, constancy of properties, equal rates of forward and reverse reactions
30-D1.2k
identify, write and interpret chemical equations for systems at equilibrium
30-D1.3k
predict, qualitatively, using Le Chatelier's principle, shifts in equilibrium caused by changes in temperature, pressure, volume, concentration or the addition of a catalyst and describe how these changes affect the equilibrium constant
30-D1.4k
define Kc to predict the extent of the reaction and write equilibrium-law expressions for given chemical equations, using lowest whole-number coefficients
30-D1.5k
describe Brønsted–Lowry acids as proton donors and bases as proton acceptors
30-D1.6k
write Brønsted–Lowry equations, including indicators, and predict whether reactants or products are favoured for acid-base equilibrium reactions for monoprotic and polyprotic acids and bases
30-D1.7k
identify conjugate pairs and amphiprotic substances
30-D1.8k
define a buffer as relatively large amounts of a weak acid or base and its conjugate in equilibrium that maintain a relatively constant pH when small amounts of acid or base are added
30-D2.1k
recall the concepts of pH and hydronium ion concentration and pOH and hydroxide ion concentration, in relation to acids and bases
30-D2.2k
define Kw, Ka, Kb and use these to determine pH, pOH, [H 3 O + ] and [OH - ] of acidic and basic solutions
30-D2.3k
calculate equilibrium constants and concentrations for homogeneous systems and Brønsted–Lowry acids and bases (excluding buffers) when concentrations at equilibrium are known

Key ideas

  1. A chemical equilibrium requires a closed system, constant macroscopic properties (colour, concentration), and EQUAL rates of the forward and reverse reactions.

  2. A Brønsted–Lowry acid DONATES a proton (H+\text{H}^+); a base ACCEPTS a proton — a broader definition than Arrhenius.

  3. pH=−log⁡[H3O+]\text{pH} = -\log[\text{H}_3\text{O}^+] and pOH=−log⁡[OH−]\text{pOH} = -\log[\text{OH}^-]; at 25 °C, pH+pOH=14\text{pH} + \text{pOH} = 14.

  4. Equilibrium is dynamic: both reactions keep happening, but their rates match, so amounts stay constant.

  5. This covers reactions with no water and bases (like NH3\text{NH}_3) that have no OH−\text{OH}^- of their own.

Watch out for

  • Thinking equilibrium means equal CONCENTRATIONS of reactants and products (it means equal RATES; concentrations are usually unequal).
  • Thinking a base must contain OH−\text{OH}^- (a Brønsted–Lowry base just accepts a proton — ammonia qualifies).
  • Thinking a higher pH means more hydronium (higher pH means LESS H3O+\text{H}_3\text{O}^+ — the scale is inverse).

Every skill’s key ideas, worked examples and checks are in MapleMind.Practise this unit

The mark you need

Your class mark counts for 70% of the final mark, the exam for 30%.

You need

59% on the exam

With 75% in class, your final mark lands between 52.5% (0 on the exam) and 82.5% (100% on it).

The official curriculum

This page follows Alberta’s own curriculum for Chemistry 30.

Study it in MapleMind

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Mathematics 31 in the MapleMind app on a tablet: its units, Unit 1 open, and the skills done so far with their starsMathematics 31 in the MapleMind app on a phone: its units, Unit 1 open, and the skills done so far with their stars
Pictured: Mathematics 31, another Alberta course, partway through Unit 1.

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Course Companion

Your year in one workbook

A fun way to keep Chemistry 30 organized, get to know your child better and see early when they need a hand. Fill it in on a screen, or print it.

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Questions about Chemistry 30

What is Chemistry 30?

Alberta’s Grade 12 science course: 4 units and 52 skills, from Thermochemical Changes to Chemical Equilibrium Focusing on Acid–Base Systems.

What units are in Chemistry 30?

1. Thermochemical Changes, 2. Electrochemical Changes, 3. Chemical Changes of Organic Compounds and 4. Chemical Equilibrium Focusing on Acid–Base Systems.

Is there a provincial exam for Chemistry 30?

Yes. The Chemistry 30 Diploma Exam counts for 30% of the final mark. Next sitting: January 26, 2027.

Can MapleMind help with Chemistry 30?

Yes. MapleMind teaches every skill of Chemistry 30, step by step, with practice and checks, and its tutor answers questions about any of them. It’s free with daily limits, on iPhone, Android and the web.

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