This is a recommended pace, not a fixed calendar: 15 content weeks plus a cumulative review week, in sequence, with no institution, no meeting times, and no due dates attached to any calendar date. Move through it faster or slower — the sequence, the labs, and the milestones stay the same either way. Readings refer to OpenStax Chemistry 2e. Unless a week says otherwise, treat "this week" as roughly 9–12 hours: one concept pass, reading and practice, a laboratory investigation, and a short self-check.
Every week below assumes the numbered labs (Labs 1–12), which need institutional reagents and an instructor's sign-off. Working through this course with no institution attached at all — the situation this pacing guide is written for by default — the laboratory program's Section 7 at-home investigations map onto roughly the same weeks and are safe to run with household materials alone; the pacing below notes which one lines up with each lab.
1. A Week at a Glance
| Component | Recommended rhythm |
|---|---|
| Concept pass | One new model per week, with worked reasoning |
| Reading | The assigned OpenStax sections for that week |
| Laboratory | One investigation per week (see the laboratory program) |
| Problem set & mastery check | By the end of the week, before moving on |
| Readiness quiz | Before starting that week's concept pass |
| Quizzes & unit exams | At the points noted below, roughly every 5 weeks |
2. Assessment Rhythm
| Milestone | Recommended timing | Coverage |
|---|---|---|
| Safety gate | Before Lab 1 | RAMP, PPE, emergency equipment, waste, and Lab 1 readiness |
| Capstone topic proposal | End of Week 4 | Question, scope, and one candidate source |
| Unit Exam 1 | End of Week 5 | Modules 0–5 |
| Formal Lab Report 1 | End of Week 5 | Labs 1–5 synthesis |
| Capstone source set | End of Week 7 | Two credible sources, including one authoritative data source |
| Unit Exam 2 | End of Week 9 | Modules 6–9 |
| Formal Lab Report 2 | End of Week 9 | Calorimetry or spectroscopy report |
| Capstone calculation draft | End of Week 11 | One complete calculation with assumptions and unit audit |
| Unit Exam 3 | End of Week 12 | Modules 10–12 |
| Capstone peer-review draft | Week 14 | Complete draft plus accessible figure description |
| Capstone final artifact | End of Week 14 | Two-page data story or accessible five-minute presentation |
| Laboratory notebook closeout | End of Week 15 | Complete notebook |
| Cumulative final examination | Review week | All modules, with emphasis on Modules 13–14 |
| Course reflection | Review week | Reflection plus any capstone correction |
3. Week by Week
Week 1
Topics: Module 0; Module 1 — mathematics, matter, measurement, SI, significant figures, and density. Reading: OpenStax 1.1–1.6. This week: Readiness quiz · concept pass on dimensional analysis, SI units, and scientific notation · Lab 1, Safety, Measurement, and Density (safety gate first; no institution? see Home Lab A) · uncertainty, significant figures, and error analysis · Problem Set 1, Module 0 checkpoint, Module 1 mastery check.
Week 2
Topics: Module 2 — atoms, isotopes, ions, formulas, periodic table, and nomenclature. Reading: OpenStax 2.1–2.7. This week: Readiness quiz · Lab 2, Precision and Glassware Calibration · nuclear model, atomic number, mass number, isotopes · ions, ionic formulas, polyatomic ions, compound naming · Quiz 1, Problem Set 2, Module 2 mastery check.
Week 3
Topics: Module 3 — the mole, molar mass, composition, and empirical/molecular formulas. Reading: OpenStax 3.1–3.5. This week: Readiness quiz · mole concept and Avogadro's constant · Lab 3, Composition of a Hydrate · particle–mole–mass conversions and formula mass · percent composition, empirical and molecular formulas · Quiz 2, Problem Set 3, Module 3 mastery check.
Week 4
Topics: Module 4 and beginning Module 5 — equations, reaction types, and stoichiometric pathways. Reading: OpenStax 4.1–4.2 and 4.4; revisit 3.3. This week: Readiness quiz · writing and balancing chemical equations · Lab 4, Stoichiometry of Bicarbonate and Acid (no institution? see Home Lab C) · reaction patterns, states, oxidation-number introduction · mole ratios and mass-to-mass stoichiometry · Problem Set 4, Module 4 mastery check, capstone topic proposal.
Week 5
Topics: Module 5 — limiting reactants, excess, theoretical yield, percent yield, and Unit 1 synthesis. Reading: OpenStax 4.3–4.4 and stoichiometry review. This week: Readiness quiz · limiting and excess reactants · Lab 5, Limiting Reactant on the Microscale · theoretical, actual, and percent yield · Unit Exam 1 (Modules 0–5) · Formal Lab Report 1, Module 5 mastery check.
Week 6
Topics: Module 6 — solutions, molarity, dilution, electrolytes, solubility, and ionic equations. Reading: OpenStax 3.4 and 4.1–4.3. This week: Readiness quiz · solution composition and molarity · Lab 6, Solution Preparation, Dilution, and Conductivity (no institution? see Home Lab E) · dilution and solution stoichiometry · electrolytes, precipitation, complete and net ionic equations · Quiz 3, Problem Set 5, Module 6 mastery check.
Week 7
Topics: Module 7 — acid–base reactions, titration stoichiometry, oxidation numbers, and introductory redox. Reading: OpenStax 4.2–4.4. This week: Readiness quiz · introductory acid–base models and neutralization · Lab 7, Acid–Base Titration of Household Vinegar (no institution? see Home Lab B) · oxidation numbers, oxidation/reduction, and agents · Problem Set 6, Module 7 mastery check, capstone source set.
Week 8
Topics: Module 8 and beginning Module 9 — energy, heat, work, calorimetry, enthalpy, and Hess's law. Reading: OpenStax 5.1–5.3. This week: Readiness quiz · systems, surroundings, heat, work, and the first law · Lab 8, Coffee-Cup Calorimetry (no institution? see Home Lab D) · specific heat and calorimeter energy balances · enthalpy, thermochemical equations, and Hess's law · Quiz 4, Problem Set 7, Module 8 mastery check.
Week 9
Topics: Module 9 and beginning Module 10 — formation enthalpies, radiation, photons, and spectra. Reading: OpenStax 5.3 and 6.1–6.2. This week: Readiness quiz · standard enthalpies of formation and energy diagrams · Lab 9, Atomic Emission Spectra · wavelength, frequency, photon energy, line spectra · Unit Exam 2 (Modules 6–9) · Formal Lab Report 2, Module 9 mastery check.
Week 10
Topics: Module 10 — quantum model, orbitals, quantum numbers, and electron configurations. Reading: OpenStax 6.3–6.4. This week: Readiness quiz · Bohr-model successes and limits; quantum probability model · supervised simulation investigation, Models of the Hydrogen Atom · quantum numbers, shells, subshells, orbital capacity · configurations, Pauli exclusion, Hund's rule · Quiz 5, Problem Set 8, Module 10 mastery check.
Week 11
Topics: Module 11 — configurations, effective nuclear charge, radius, ionization energy, and periodic trends. Reading: OpenStax 6.5. This week: Readiness quiz · atom and ion configurations; valence and core electrons · Lab 12, Periodic Trends in Reactivity · effective nuclear charge, shielding, atomic/ionic radius · ionization energy, electron affinity, exceptions · Problem Set 9, Lab 12 checkpoint, Module 11 mastery check, capstone calculation draft.
Week 12
Topics: Module 12 — ionic/covalent bonding, lattice energy, electronegativity, Lewis structures, formal charge, and resonance. Reading: OpenStax 7.1–7.4. This week: Readiness quiz · ionic, covalent, and metallic bonding models; lattice-energy trends · Lab 10A, Molecular Models and Lewis Structures · Lewis structures, formal charge, resonance, exceptions · Unit Exam 3 (Modules 10–12) · Problem Set 10, Lab 10A checkpoint, Module 12 mastery check.
Week 13
Topics: Module 13 — VSEPR, geometry, polarity, valence-bond theory, sigma/pi bonds, and hybridization. Reading: OpenStax 7.5–7.6 and 8.1–8.2. This week: Readiness quiz · electron domains, VSEPR, molecular geometry, bond angles · Lab 10B, Polarity and Structure–Property Analysis · Quiz 6, Problem Set 11, Lab 10B analysis, Module 13 mastery check.
Week 14
Topics: Module 14A — gas pressure, gas laws, ideal gas equation, mixtures, gas stoichiometry, and kinetic molecular theory. Reading: OpenStax 9.1–9.5. This week: Readiness quiz · pressure, Boyle's law, Charles's law, absolute temperature · Lab 11, Gas-Law Investigation · ideal gas equation, density, mixtures, gas stoichiometry · kinetic molecular theory, molecular speeds, non-ideal behavior · complete capstone peer-review draft, then the capstone final artifact · Problem Set 12, gas-law mastery check.
Week 15
Topics: Module 14B — intermolecular forces, liquids, phase changes, and cumulative integration. Reading: OpenStax 10.1–10.4. This week: Readiness quiz · intermolecular-force synthesis · laboratory data conference and notebook closeout · structure–property synthesis · phase diagrams, heating curves, cumulative concept map · optional ungraded final-practice set.
Review Week — Cumulative Final Examination
- Open cumulative review, at your own pace, using the study toolkit and quick reference.
- A drop-in problem clinic's worth of review: work back through anything flagged in Weeks 13–15.
- Cumulative Final Examination — all modules, emphasizing Modules 13–14. The course periodic table and final-exam formula sheet are allowed.
- Course reflection and any required capstone correction, to close out the course.
4. How to Read These Milestones
- Every date above is relative to your pace, not a calendar — "end of Week 5" means whenever you get there.
- Readiness quizzes exist to prime you for that week's concept pass; take them right before starting, not after.
- Safety gates and pre-lab checks come before physical lab work, always, regardless of pace.
- Nothing here is graded by an instructor today — see the platform roadmap for automatic grading and progress tracking, which is planned but not yet built.