Question breakdown in Hydrangea Pigments in Model Mixtures (Q21–Q25)
| Question | Response Type | Topic | NYSP12SLS Standard | Action |
|---|---|---|---|---|
| Question 21 | 1-credit Constructed Response (rubric-scored) | Acids and bases | HS-PS1-11 | Solve in workspace → |
| Question 22 | 1-credit Multiple Choice (4 options) | Acids and bases | HS-PS1-11 | Solve in workspace → |
| Question 23 | 1-credit Multiple Choice (4 options) | Acids and bases | HS-PS1-11 | Solve in workspace → |
| Question 24 | 1-credit Constructed Response (rubric-scored) | Bonding and formulas | HS-PS1-2 | Solve in workspace → |
| Question 25 | 1-credit Multiple Choice (4 options) | Reaction rates | HS-PS1-5 | Solve in workspace → |
Other clusters in Independent Chemistry Practice Examination B
| Questions | Cluster & Topics | Format | Practice |
|---|---|---|---|
| 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 |
| 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 |
Frequently asked questions
- How is Hydrangea Pigments in Model Mixtures · Independent Chemistry Practice Examination B Chemistry Regents Cluster (Q21–Q25) structured on All Regents?
- Blue hydrangea color in model mixtures: controlled variables, pH and H₃O⁺, aluminum ion charge, collision theory. Practice the Hydrangea Pigments in Model Mixtures phenomenon cluster (Q21–Q25: 3 MC, 2 CR) from Independent Chemistry Practice Examination B (Physical Science: Chemistry). Covers Acids and bases, Bonding and formulas, Reaction rates (HS-PS1-11, HS-PS1-2, HS-PS1-5) with the 2025 Reference Tables and scoring guide. 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.