# Year 11 Queensland General Chemistry · opening fortnight · Days 1–10

**Elective senior science starter.** These ten **25-minute** paper/model lessons sample [QCAA Chemistry General senior syllabus 2025 v1.3](https://www.qcaa.qld.edu.au/downloads/senior-qce/syllabuses/snr_chemistry_25_syll.pdf), Unit 1 *Chemical fundamentals — structure, properties and reactions*, Topic 1 *Properties and structure of atoms*. Topic 1 is notionally **20 hours**. This pack is **250 minutes (4 hours 10 minutes)** of early conceptual work; it does not complete Topic 1, a 55-hour unit, Year 11 Chemistry, a practical investigation or a school assessment instrument. Chemistry is a chosen General subject, not a universal Year 11 requirement. School teachers decide pacing, real laboratory work, local safety and formal instruments.

**Start here:** Use the [ten teacher scripts](LESSONS.md) with the [original atom/model cards](MODEL-CARDS.md), [clean learner pages](LEARNER.md), [three switchable routes per day](DAILY-CHOICES.md) and [optional extra/home invitations](DAILY-EXTRAS.md). Three original [A4 SVG/PDF aids with exact full-text/tactile routes](print/TEXT-ALTERNATIVES.md) support whole-class, small-group or individual work. Days 5 and 10 use [two fresh public formative checks](STUDENT-CHECKS.md) with [separate public worked answers and next moves](teacher/ANSWER-AND-NEXT.md). Their URLs are open, so they are **not secure examinations**; use a locally unseen parallel card if prior access matters.

**Narrow scientific target:** Model an atom as a nucleus with protons/neutrons and electrons represented in distinct energy levels; keep the model's limits clear. Use atomic number **Z = protons**, mass number **A = protons + neutrons**, and left-hand nuclear symbol notation to find subatomic counts in selected neutral atoms and simple monoatomic ions. Recognise isotopes as the **same element/Z** with different neutron count/A. Electron loss/gain changes charge, not element or isotope. These are small, specified examples; there is no claim that a real everyday item contains exactly the invented atom inventory. A periodic-table decimal atomic weight is **not** the integer mass number of one isotope. See the [exact syllabus point and taught-limit crosswalk](CURRICULUM-CROSSWALK.md) and [source/rights ledger](SOURCE-AND-RIGHTS.md).

**Access and safety:** Learners may read/annotate, move full-word numbered cards under their direction, or type/dictate/use AAC for the same calculation and explanation. Routes can switch without assigning a fixed learning style or disability label. A reader/scribe removes a barrier but must not provide the chemistry reasoning; log support. All tasks are paper-only models. There are **no chemicals, flame tests, radioactive sources, specimens, mixing, tasting, medical history or diagnosis**. Any later practical requires the school's qualified teacher and risk process. Fictional contexts never justify material safety, dose, purity, provenance or health claims.

The [teacher/learner/supporter desk run](QA-RUN-THROUGH.md) reports what was simulated. The [source and rights ledger](SOURCE-AND-RIGHTS.md) and [local file receipt](MANIFEST.sha256) support review and reuse. There has been **no classroom pilot, translation validation, specialist accessibility review, cultural review or measured learning impact**.

SubjectNest original text and diagrams © NeuroForgeIO Pty Ltd 2026, [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/): credit SubjectNest, link the licence and indicate changes. QCAA, IUPAC and font rights remain separate.