Enhanced overlay: Weeks 1-2 bootcamp session-05.html may be taught with this lesson. The bootcamp is not the whole course.

Canonical lesson CHEMISTRY20-U1-L14 · outcome 20-A2.1k · depth ENHANCED_BOOTCAMP_OVERLAY

Unit A: Diversity of Matter and Chemical Bonding - outcome 20-A2.1k

• Course: CHEMISTRY20 (SCN2796)
• Lesson ID: CHEMISTRY20-U1-L14
• Official outcome: 20-A2.1k (KNOWLEDGE)
• Object type: canonical lesson (not a bootcamp session)
• Source: Alberta Chemistry 20 Program of Studies (2007, updated 2014)

Official outcome text

recall principles for assigning names to molecular substances

Learning intention

Meet 20-A2.1k 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

Molecular names use prefixes for both elements except mono- is dropped on the first: CO carbon monoxide, CO2 carbon dioxide, N2O dinitrogen monoxide, PCl5 phosphorus pentachloride. The second element ends in -ide. Do not use Stock numbers for these binary molecular compounds in Chemistry 20 naming.

Worked example

Name Cl2O7: dichlorine heptoxide. Formula for sulfur trioxide: SO3. Formula for dinitrogen tetroxide: N2O4.

Guided practice

1. Name P4O10 and write the formula for iodine heptafluoride. Do not reuse Cl2O7 / SO3 / N2O4.
2. Near-miss: naming NaCl as sodium monochloride. Mark the first wrong line (ionic vs molecular rules).

Independent practice

1. Name N2O5 and write the formula for carbon tetrachloride.
2. Two sentences: when Greek prefixes are required.
3. mono- drop rule: CO vs carbon monoxide.

Diagram / whiteboard

Approved diagram id chem20-ionic-lattice - Ionic lattice / bonding sketch. 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 CO2 “carbon(IV) oxide” as the Chem 20 required name, or naming NaCl with prefixes.

Safety and lab register

Setting: classroom-supervised only for Session 04 conductivity (NaCl / sucrose / ~5% vinegar, 9 V LED or school probe). All other Unit A work is paper, models, data cards, or approved simulation. Forbidden: bleach+acid, bleach+ammonia, flames, tasting, home copy of Session 04, concentrated acids/bases, generating Cl2. 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

Name Cl2O and write the formula for dinitrogen monoxide.

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

AI Tutor / human tutor

Ground on 20-A2.1k. 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.