Canonical lesson CHEMISTRY20-U3-L32 · outcome 20-C2.1sts · depth CURRICULUM_BASELINE

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

• Course: CHEMISTRY20 (SCN2796)
• Lesson ID: CHEMISTRY20-U3-L32
• Official outcome: 20-C2.1sts (STS)
• Object type: canonical lesson (not a bootcamp session)
• Source: Alberta Chemistry 20 Program of Studies (2007, updated 2014)

Official outcome text

explain that the goal of technology is to provide solutions to practical problems (ST1) [ICT F2-4.4] • relate the concept of pH to solutions encountered in everyday life, such as pharmaceuticals, shampoo and other cleaning products, aquatic and terrestrial environments, and blood/blood products

Learning intention

Meet 20-C2.1sts 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

pH language appears in shampoos, cleaners, pools, and blood-product contexts in POS examples. Relate concept to labels without medical advice.

Worked example

Label card: shampoo pH ~5-6; oven cleaner high pH (school discussion of label only); pool strip reading given. Student: match product → approximate pH → acid/base/neutral language.

Guided practice

1. Complete three product→pH→classification rows from the card.
2. Near-miss: tasting to confirm pH. Forbidden.

Independent practice

1. One environmental water pH example from the card.
2. Two sentences: ST1 technology solving practical problems (pH control) at a high level.
3. No medical dosing.

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

Adjusting pool chemicals at home as a course requirement.

Safety and lab register

Setting: Read labels / use pack cards. No home chemical adjustment tasks. 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

Three-row everyday pH table.

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

AI Tutor / human tutor

Ground on 20-C2.1sts. 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.