All 10 clusters in Independent Chemistry Practice Examination B
Each phenomenon cluster pairs a shared reading, experimental table, graph, or diagram with 4–6 connected questions. Select any cluster below to launch it in the interactive workspace with the 2025 Reference Tables and scoring rubrics.
| Questions | Cluster & NYSP12SLS Standards | Format | Workspace |
|---|---|---|---|
| 1–5 | Bomb Carbon in an Elephant TuskDating an elephant tusk with bomb carbon-14: nuclear equations, isotopes, nuclear vs chemical energy, photosynthesisNuclear chemistry · Stoichiometry and conservation (HS-PS1-8, HS-PS1-7) | 3 MC, 2 CR | Practice cluster |
| 6–10 | A Wire That Opens a Vent When It WarmsA nitinol wire opening a cold-frame lid: atom arrangements, metallic bonding, direction of heat flow, energy conversionsMaterials and structure · Energy calculations (HS-PS2-6, HS-PS3-1) | 3 MC, 2 CR | Practice cluster |
| 11–15 | Filling a Hydrogen Storage CylinderA hydrogen tank warming as it fills: liquid vs gas particles, kinetic energy and pressure, volume at STP, specific heatIntermolecular forces · Gases · Energy calculations · Engineering design (HS-PS1-3, HS-PS1-9, HS-PS3-1, HS-ETS1-3) | 3 MC, 2 CR | Practice cluster |
| 16–20 | Crystal Forms and DissolvingTwo crystal forms of one compound: combustion equations, percent composition, attractions between molecules, saturationBonding and formulas · Stoichiometry and conservation · Intermolecular forces · Solutions (HS-PS1-2, HS-PS1-7, HS-PS1-3, HS-PS1-10) | 2 MC, 3 CR | Practice cluster |
| 21–25 | Hydrangea Pigments in Model MixturesBlue hydrangea color in model mixtures: controlled variables, pH and H₃O⁺, aluminum ion charge, collision theoryAcids and bases · Bonding and formulas · Reaction rates (HS-PS1-11, HS-PS1-2, HS-PS1-5) | 3 MC, 2 CR | Practice cluster |
| 26–30 | An Air Bag Has Milliseconds to Make GasSodium azide in a model air-bag inflator: rate and collisions, potential energy diagrams, specific heat, stoichiometryReaction rates · Thermochemistry · Energy calculations · Stoichiometry and conservation (HS-PS1-5, HS-PS1-4, HS-PS3-1, HS-PS1-7) | 3 MC, 2 CR | Practice cluster |
| 31–35 | Turning Dissolved Carbon Dioxide into StoneStoring CO₂ as carbonate rock in basalt: gas solubility and pressure, mass stoichiometry, Group 2 trends, Le ChâtelierSolutions · Stoichiometry and conservation · Periodic patterns · Equilibrium · Reaction rates (HS-PS1-10, HS-PS1-7, HS-PS1-1, HS-PS1-6, HS-PS1-5) | 3 MC, 2 CR | Practice cluster |
| 36–40 | Saving the Iron Behind the Copper SkinIron corroding under the Statue of Liberty's copper: half-reactions, ionic formulas, electron flow, moles of electronsOxidation and reduction · Bonding and formulas · Stoichiometry and conservation (HS-PS1-12, HS-PS1-2, HS-PS1-7) | 2 MC, 3 CR | Practice cluster |
| 41–45 | Making Snow When the Air Seems Too WarmSnowmaking above freezing: evaporative cooling, intermolecular forces, and heats of fusion and vaporizationIntermolecular forces · Energy calculations (HS-PS1-3, HS-PS3-1) | 3 MC, 2 CR | Practice cluster |
| 46–50 | Tracing the Oxygen Released by AlgaeAlgae, colored lamps, and oxygen-18 tracers: absorbed light, photon energy and wavelength, isotopes, photosynthesisElectromagnetic radiation · Photosynthesis · Engineering design (HS-PS4-4, HS-LS1-5, HS-ETS1-2) | 3 MC, 2 CR | Practice cluster |
How to practice with Independent Chemistry Practice Examination B
Work a phenomenon cluster
Every new-format Regents exam groups 45–55 questions into 9–11 clusters anchored by a shared reading, experimental table, graph, equation, or particle/system model.
Answer on-canvas, in tables, and in prose
Keep the cluster stimulus and the 2025 Reference Tables open beside the questions. Answer 1-credit multiple choice, check Support/Refute claim boxes, draw diagrams or particle models, label figures, and write out mathematical setups.
Score against the NYSED rating guide
Both Learn mode and Exam mode unlock scoring guides after you submit the full cluster. Multiple choice is graded automatically against the key; written responses and models use rubric-guided self-review.
Looking for more Chemistry practice? Explore the Chemistry Regents hub → or review the 2025 Chemistry Reference Tables guide →.
Frequently asked questions
- How is Physical Science: Chemistry Practice Examination B (50 Questions, 10 Clusters) structured on All Regents?
- Full-length 50-question, 10-cluster NYSP12SLS Physical Science: Chemistry Practice Examination B covering chemical reactions, matter structure, thermochemistry, nuclear decay, electromagnetic radiation, and HS-ETS1 engineering design. Every question is worth 1 raw credit and pairs with the 2025 Edition Reference Tables, automatic multiple-choice key checking, and step-by-step constructed-response scoring guidance.
- Can I practice one phenomenon cluster at a time or sit the full exam?
- Yes. In the All Regents workspace you can launch any individual 4–6 question cluster in Learn mode (with strategy prompts) or sit the complete examination in Exam mode, then review every answer against the official-style scoring guide.