Canonical lesson CHEMISTRY20-U4-L07 · outcome 20-D1.1s · depth CURRICULUM_BASELINE

Unit D: Quantitative Relationships in Chemical Changes - outcome 20-D1.1s

• Course: CHEMISTRY20 (SCN2796)
• Lesson ID: CHEMISTRY20-U4-L07
• Official outcome: 20-D1.1s (SKILL)
• Object type: canonical lesson (not a bootcamp session)
• Source: Alberta Chemistry 20 Program of Studies (2007, updated 2014)

Official outcome text

formulate questions about observed relationships and plan investigations of questions, ideas, problems and issues • plan and predict states, products and theoretical yields for chemical reactions (IP-NS3) [ICT C6-4.1] • design an experiment to identify an ion; e.g., precipitation, flame test (IP-NS2) • describe procedures for the safe handling, storage and disposal of materials used in the laboratory, with reference to WHMIS and consumer product labelling information (IP-ST3)

Learning intention

Meet 20-D1.1s 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

Plan predictions of states/products/theoretical yields; design ion identification (precipitation) with WHMIS; flame tests only if teacher-scheduled.

Worked example

Plan: precipitate AgCl from given dilute solutions (school) OR dataset photos; predict mass from stoichiometry; flame test listed as teacher-only optional.

Guided practice

1. Write precipitation plan with mole prediction.
2. Near-miss: bleach mixes for “chlorine test.” Forbidden.

Independent practice

1. Theoretical yield calculation from given grams.
2. WHMIS for silver/nitrate salts if used.
3. Dataset alternative.

Diagram / whiteboard

Approved diagram id chem20-stoich-mole-map - Mole map stoichiometry flow. 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

Open-flame student flame tests without training.

Safety and lab register

Setting: School dilute precipitations or dataset. Teacher-only flames. AI Tutor must not invent labs outside CHEM20_LOW_RESOURCE_LAB_REGISTER.csv.

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

Formative evidence

Plan + theoretical yield line.

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

AI Tutor / human tutor

Ground on 20-D1.1s. 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.