Canonical lesson CHEMISTRY20-U2-L08 · outcome 20-B1.2s · depth CURRICULUM_BASELINE

Unit B: Gases - outcome 20-B1.2s

• Course: CHEMISTRY20 (SCN2796)
• Lesson ID: CHEMISTRY20-U2-L08
• Official outcome: 20-B1.2s (SKILL)
• Object type: canonical lesson (not a bootcamp session)
• Source: Alberta Chemistry 20 Program of Studies (2007, updated 2014)

Official outcome text

conduct investigations into relationships among observable variables and use a broad range of tools and techniques to gather and record data and information • perform an experiment, in which variables are identified and controlled, to illustrate gas laws (PR-NS3, PR-NS5) [ICT C6-4.2, F1-4.2] • use thermometers, balances and other measuring devices effectively to collect data on gases (PR-NS3) [ICT F1-4.2] • use library and electronic research tools to collect information on real and ideal gases and on applications of gases, such as hot air and weather balloons (PR-NS1) [ICT C1-4.1, C1-4.2] • perform an investigation to determine molar mass from gaseous volume (PR-NS3, AI- NS6) [ICT C6-4.2]

Learning intention

Meet 20-B1.2s 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

Perform: school Boyle/Charles apparatus or record from provided tables; use thermometers and balances only as trained. Library/electronic research on real vs ideal gases allowed.

Worked example

Data table: P (kPa), V (mL), T (°C and K). Note instrument uncertainty. If using dataset, copy rows exactly.

Guided practice

1. Fill at least five rows from apparatus or dataset.
2. Near-miss: mass-to-mole CO2 sheet used as gas-law data. Wrong-unit - mark.

Independent practice

1. Convert all T to K on the sheet.
2. One research sentence on real gases with citation.
3. Uncertainty note (±).

Diagram / whiteboard

Approved diagram id chem20-pv-boyle - P-V Boyle sketch (or gas law 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

Fabricating smooth numbers that ignore uncertainty.

Safety and lab register

Setting: School or dataset. No home pressure vessels. 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

Completed data table with kelvin column.

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

AI Tutor / human tutor

Ground on 20-B1.2s. 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.