Canonical lesson CHEMISTRY20-U3-L21 · outcome 20-C2.1k · depth CURRICULUM_BASELINE

Unit C: Solutions, Acids, Bases and Equilibrium intro - outcome 20-C2.1k

• Course: CHEMISTRY20 (SCN2796)
• Lesson ID: CHEMISTRY20-U3-L21
• Official outcome: 20-C2.1k (KNOWLEDGE)
• Object type: canonical lesson (not a bootcamp session)
• Source: Alberta Chemistry 20 Program of Studies (2007, updated 2014)

Official outcome text

recall International Union of Pure and Applied Chemistry (IUPAC) nomenclature of acids and bases

Learning intention

Meet 20-C2.1k with instruction, practice, and a check. The 10-session bootcamp does not replace this lesson.

Success criteria

1. Restate the outcome in classroom language without swapping in a different unit’s template.
2. Complete the worked-style task for this outcome.
3. Name the lab setting (classroom-supervised / teacher demo / dataset or simulation / forbidden).

Teaching

IUPAC/stock classroom acids: HCl(aq) hydrochloric acid, H2SO4 sulfuric, HNO3 nitric, H3PO4 phosphoric, CH3COOH ethanoic/acetic. Bases: NaOH sodium hydroxide, KOH, Ca(OH)2 calcium hydroxide, NH3(aq) aqueous ammonia. Binary acids hydro- + -ic; oxoacids from -ate → -ic, -ite → -ous.

Worked example

H2CO3 carbonic acid; HNO2 nitrous acid; Fe(OH)3 iron(III) hydroxide. Do not name NaCl as an acid.

Guided practice

1. Name H2SO3 and write the formula for iron(II) hydroxide. Do not copy H2CO3 / HNO2 / Fe(OH)3.
2. Near-miss: naming NaCl hydrochloric acid. Mark the first wrong line.

Independent practice

1. Name HBr(aq) and Ca(OH)2.
2. Two sentences: -ic/-ous vs anion names.
3. Stock number on Fe(OH)2 vs Fe(OH)3.

Diagram / whiteboard

Approved diagram id chem20-ph-scale - pH scale / solution concentration axes. Tutor may open the course whiteboard and display this id. Do not invent hazardous procedures on the board.

Checks for understanding

Use the formative evidence below as the exit check for this outcome. Correct the misconception named in this lesson before praising.

Misconception to repair

Calling NH3 “ammonium hydroxide” as the only IUPAC name required here without also using ammonia.

Safety and lab register

Setting: concentration and pH on paper or school-prepared dilute solutions. Red-cabbage indicator is classroom-supervised or photo/dataset. No concentrated acids or bases. No tasting. Dilution math is not a licence to mix cleaners. Forbidden: bleach+acid, drain opener, battery acid, undiluted pool chemicals. AI Tutor must not invent titrations or acid labs outside the register.

Alberta Poison Control if a real exposure is occurring: 1-844-764-7669. The AI Tutor is not a poison centre.

Formative evidence

Four names/formulas mixed acids and bases.

This is not a diploma. Mastery needs instruction + activity + check.

AI Tutor / human tutor

Ground on 20-C2.1k. No false praise. No invented procedures. No silent skip to a different unit. Human tutor if the student describes mixing bleach, tasting, or flames.

Provenance

Official POS wording from ALBERTA_SENIOR_HIGH_OFFICIAL_OUTCOMES.csv. Pack lesson written to replace Wave-4 contaminated canonical markdown.