Question breakdown in How Long Have the Boulders Sat in Central Park? (Q1–Q5)
| Question | Response Type | Topic | NYSP12SLS Standard | Action |
|---|---|---|---|---|
| Question 1 | 1-credit Multiple Choice (4 options) | Nuclear chemistry | HS-PS1-8 | Solve in workspace → |
| Question 2 | 1-credit Constructed Response (rubric-scored) | Periodic patterns | HS-PS1-1 | Solve in workspace → |
| Question 3 | 1-credit Multiple Choice (4 options) | Nuclear chemistry | HS-PS1-8 | Solve in workspace → |
| Question 4 | 1-credit Constructed Response (rubric-scored) | Nuclear chemistry | HS-PS1-8 | Solve in workspace → |
| Question 5 | 1-credit Multiple Choice (4 options) | Engineering design | HS-ETS1-3 | Solve in workspace → |
Other clusters in Chemistry Practice Examination · 121
| Questions | Cluster & Topics | Format | Practice |
|---|---|---|---|
| 6–10 | Water-Holding Gel in Dry SoilA water-absorbing polymer mixed into sandy soil: polymer formulas, Periodic Table groups, and conservation of massBonding and formulas · Periodic patterns · Materials and structure · Stoichiometry and conservation (HS-PS1-2, HS-PS1-1, HS-PS2-6, HS-PS1-7) | 3 MC, 2 CR | Practice cluster |
| 11–15 | Natural-Gas Garbage TrucksChoosing methane or diesel for a fleet: energy per mole and per gram, CO₂ mole ratios, and equal gas volumesThermochemistry · Stoichiometry and conservation · Gases (HS-PS3-1, HS-PS1-7, HS-PS1-2, HS-PS1-9) | 3 MC, 2 CR | Practice cluster |
| 16–20 | Measuring Salt Lost in SweatSweat patches and salt tablets for athletes: molarity and molar mass, dissolved ions, and solubilitySolutions · Stoichiometry and conservation · Bonding and formulas (HS-PS1-10, HS-PS1-7, HS-PS1-2) | 3 MC, 2 CR | Practice cluster |
| 21–25 | Lime and Pigments for a FrescoPainting on damp plaster made from slaked lime: pH, energy changes in reactions, and pigment color testsAcids and bases · Thermochemistry · Engineering design (HS-PS1-11, HS-PS1-4, HS-ETS1-3) | 3 MC, 2 CR | Practice cluster |
| 26–30 | Keeping Insulin CoolTraveling with a protein medicine in hot weather: hydrogen bonds, temperature and reaction rate, and cooling-case designMaterials and structure · Reaction rates · Engineering design (HS-PS2-6, HS-PS1-5, HS-ETS1-3) | 3 MC, 2 CR | Practice cluster |
| 31–35 | Making Water from Carbon Dioxide on the Space StationTurning exhaled CO₂ into water in orbit: energy changes, mole ratios and limiting reactants, and condensationThermochemistry · Stoichiometry and conservation · Intermolecular forces (HS-PS1-4, HS-PS1-7, HS-PS1-3) | 3 MC, 2 CR | Practice cluster |
| 36–40 | A Fuel-Cell Breath TesterEthanol in a breath sample reacting at platinum electrodes: half-reactions, oxidation numbers, and calibration dataOxidation and reduction · Stoichiometry and conservation (HS-PS1-7, HS-PS1-2, HS-PS1-12) | 3 MC, 2 CR | Practice cluster |
| 41–45 | Windshield Washer Fluid in WinterAlcohol and water mixtures sprayed on cold glass: bonding and attractions, freezing-point graphs, and boiling pointsBonding and formulas · Solutions · Intermolecular forces (HS-PS1-1, HS-PS1-3) | 3 MC, 2 CR | Practice cluster |
| 46–50 | Engelmann's Bacteria and a PrismAn 1882 microscope test of which colors drive photosynthesis: line spectra, electron energy levels, and seawater pHElectromagnetic radiation · Engineering design · Acids and bases (HS-PS4-4, HS-PS1-1, HS-ETS1-2, HS-ESS2-6) | 3 MC, 2 CR | Practice cluster |
Frequently asked questions
- How is How Long Have the Boulders Sat in Central Park? · Chemistry Practice Examination · 121 Chemistry Regents Cluster (Q1–Q5) structured on New Regents?
- Dating glacier-carried rocks from cosmic-ray products: nuclear decay, half-life, and atomic radius. Practice the How Long Have the Boulders Sat in Central Park? phenomenon cluster (Q1–Q5: 3 MC, 2 CR) from Chemistry Practice Examination · 121 (Physical Science: Chemistry). Covers Nuclear chemistry, Periodic patterns, Engineering design (HS-PS1-8, HS-PS1-1, HS-ETS1-3) 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 New 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.