Question breakdown in Preparing a Deicing Brine (Q16–Q20)
| Question | Response Type | Topic | NYSP12SLS Standard | Action |
|---|---|---|---|---|
| Question 16 | 1-credit Multiple Choice (4 options) | Solutions | HS-PS1-10 | Solve in workspace → |
| Question 17 | 1-credit Constructed Response (rubric-scored) | Solutions | HS-PS1-10 | Solve in workspace → |
| Question 18 | 1-credit Multiple Choice (4 options) | Stoichiometry and conservation | HS-PS1-7 | Solve in workspace → |
| Question 19 | 1-credit Constructed Response (rubric-scored) | Stoichiometry and conservation | HS-PS1-7 | Solve in workspace → |
| Question 20 | 1-credit Multiple Choice (4 options) | Bonding and formulas | HS-PS1-2 | Solve in workspace → |
Other clusters in Chemistry Practice Examination · 118
| Questions | Cluster & Topics | Format | Practice |
|---|---|---|---|
| 1–5 | Potassium and the Record in RockPotassium-40 in rock: nuclear vs chemical energy, beta and gamma emission, potassium vs sodium, a gas-collector designNuclear chemistry · Periodic patterns · Engineering design (HS-PS1-8, HS-PS1-1, HS-ETS1-1) | 3 MC, 2 CR | Practice cluster |
| 6–10 | A Lighter Protective HousingMagnesium-alloy shells: Ca vs Mg ionization energy, an aluminum oxide formula, metallic conduction, water near Mg²⁺Periodic patterns · Bonding and formulas · Materials and structure · Intermolecular forces · Polarity and molecular structure (HS-PS1-1, HS-PS1-2, HS-PS2-6, HS-PS1-3, HS-PS3-5) | 3 MC, 2 CR | Practice cluster |
| 11–15 | A Flexible Bag Rising Through WaterA nitrogen-filled lift bag: Boyle's and Charles's laws, the combined gas law, NH₃ molecules from N₂, and specific heatGases · Stoichiometry and conservation · Thermochemistry (HS-PS1-9, HS-PS1-7, HS-PS3-1) | 3 MC, 2 CR | Practice cluster |
| 21–25 | Comparing Two Vinegar SamplesVinegar with added sodium acetate: pH and hydronium ions, Brønsted–Lowry acids and bases, and boiling point elevationAcids and bases · Solutions (HS-PS1-11, HS-PS1-10) | 3 MC, 2 CR | Practice cluster |
| 26–30 | Cleaning an Exhaust StreamCO oxidation with and without a catalyst: potential energy diagrams, activation energy, CO₂ mass, specific heatThermochemistry · Reaction rates · Stoichiometry and conservation (HS-PS1-4, HS-PS1-5, HS-PS1-7, HS-PS3-1) | 3 MC, 2 CR | Practice cluster |
| 31–35 | Hydrogen from Methane and SteamThe water-gas shift step: temperature and Le Châtelier's principle, H₂ mole ratios, Group 2 metal reactivity, catalystsEquilibrium · Stoichiometry and conservation · Periodic patterns · Engineering design · Reaction rates (HS-PS1-6, HS-PS1-7, HS-PS1-1, HS-ETS1-3, HS-PS1-5) | 3 MC, 2 CR | Practice cluster |
| 36–40 | Moving Copper Between ElectrodesCopper anode and cathode in CuSO₄: oxidation half-reaction, electron gain and loss at each electrode, water near Cu²⁺Oxidation and reduction · Materials and structure · Polarity and molecular structure (HS-PS1-12, HS-PS2-6, HS-PS3-5) | 3 MC, 2 CR | Practice cluster |
| 41–45 | Moving Heat Through a Sealed PipeInside a water heat pipe: evaporation, condensation and attractions, heat of vaporization, concentration, ions in waterIntermolecular forces · Thermochemistry · Solutions · Polarity and molecular structure (HS-PS1-3, HS-PS3-1, HS-PS1-10, HS-PS3-5) | 3 MC, 2 CR | Practice cluster |
| 46–50 | A Plant Room with Adjustable LampsRed, blue, and white lamps for shoot growth: wavelength and frequency, photon energy vs photon count, 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 Preparing a Deicing Brine · Chemistry Practice Examination · 118 Chemistry Regents Cluster (Q16–Q20) structured on All Regents?
- Road-salt brine and other chloride deicers: molarity, silver chloride precipitation, chlorine mass, and ionic formulas. Practice the Preparing a Deicing Brine phenomenon cluster (Q16–Q20: 3 MC, 2 CR) from Chemistry Practice Examination · 118 (Physical Science: Chemistry). Covers Solutions, Stoichiometry and conservation, Bonding and formulas (HS-PS1-10, HS-PS1-7, HS-PS1-2) 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.