Page-by-page contents of the 2025 Chemistry Reference Tables (with real exam examples)
| Page & Section | Exact Contents Supplied | Real Examples From Our Exam Library |
|---|---|---|
| Page 1 · Periodic Table of the Elements | Atomic number, element symbol, full element name, and average atomic mass to two decimal places (CRC 104th ed.) across Periods 1–7, Groups 1–18, lanthanides, and actinides. (No electron configurations or oxidation states.) | In June 2026 Q12: Equilibria in the Blood, you use Group 14 and Group 16 placement on Page 1 to count valence electrons for a CO2 electron-dot diagram. In Sample Cluster 1 Q3: Smartphone Chemistry, you use Page 1 atomic masses (Al = 26.98, O = 16.00) to compute the mass of Al2O3 required for 1,000 smartphones. |
| Page 2 · The Electromagnetic Spectrum | Logarithmic wavelength scale in a vacuum (104 m to 10−13 m) and frequency scale (105 Hz to 1021 Hz) across Radio, Microwave, Infrared, Visible, Ultraviolet, X-ray, and Gamma ray bands; visible-light boundaries from Red (7.00 × 10−7 m / 4.28 × 1014 Hz) to Violet (4.00 × 10−7 m / 7.50 × 1014 Hz). | In Sample Cluster 3 Q4: Evaluating Gas Stoves, you compare the frequency and photon energy of light absorbed by chlorophyll vs. infrared radiation absorbed by methane. In August 2026 Cluster 7: The ABCs of Ultraviolet Radiation (Q26), you relate UV-A, UV-B, and UV-C wavelengths to photon energy and sunscreen protection. |
| Page 3 · Symbols Used in Nuclear Chemistry & Selected Ions | Nuclear symbols: alpha particle (42He or 42α), beta particle/electron (0−1e or 0−1β−), gamma radiation (00γ), neutron (10n), positron (0+1e or 0+1β+), proton (11H or 11p). Selected Ions Forming Aqueous Solutions: Group 1 cations, NH4+, and 22 common monatomic and polyatomic anions (CO32−, HCO3−, NO3−, NO2−, OH−, PO43−, SO42−, SO32−, ClO3−, CrO42−, Cr2O72−, MnO4−, C2H3O2− / CH3COO−, etc.). | In June 2026 Q1: How Glow Became Gloom, you use Page 3 nuclear symbols to predict changes in nuclear composition as radium decays. In August 2026 Q4: Electricity Generation in New York State, you draw a nuclear model from a fission equation, and in August 2026 Q43: Parade of Balloons, you connect alpha particles (42He) to underground helium formation. |
| Page 4 · Mathematical Models, Relationships, Units & Prefixes | Models: Combined gas law (P1V1/T1 = P2V2/T2); thermal energy (q = mcΔT, q = mHf, q = mHv); concentration (ppm = [mass of solute / mass of solution] × 1,000,000 and n = MV); Coulomb’s law (F ∝ q1q2/d2). Relationships & Constants: mole = 6.02 × 1023 particles; K = °C + 273.15; 1.00 cal = 4.18 J; STP = 273.15 K and 1 atm; 15 units (m, g, Pa, kPa, atm, J, cal, K, °C, mol, M, ppm, Hz, s, L) and 6 metric prefixes (kilo 103, deci 10−1, centi 10−2, milli 10−3, micro 10−6, nano 10−9). | In June 2026 Q20: Urban Heat Islands, you combine q = mcΔT with brick data from the prose and table. In August 2026 Q41: Parade of Balloons, you use P1V1/T1 = P2V2/T2 and K = °C + 273.15. |
What was removed from the 2011 Reference Tables (Tables A–T)—and where that data lives now
Eighteen tables from the 2011 Physical Setting/Chemistry booklet do not appear in the 2025 Edition. Do not waste exam time flipping looking for Table S or Table G—here is how real clusters in our test bank supply or test every removed resource:
| Removed 2011 Resource | What It Contained | How Real New-Format Clusters Handle It |
|---|---|---|
| 2011 Table S (Properties of Selected Elements) | Numerical electronegativity, first ionization energy, atomic radius, density, melting point, and boiling point for Elements 1–92. | Numerical values are given in a cluster table when needed—for example, August 2026 Q46: Safe Transport of Drinking Water supplies an atomic-radius and ionization-energy table in the stimulus, while June 2026 Q50: Indoor Air Pollution tests qualitative electronegativity trends to label δ+ and δ− on formaldehyde and water. |
| 2011 Periodic Table cell annotations | Ground-state electron configurations (e.g., 2-8-1) and selected oxidation states in each element box. | Students derive valence electrons and ion charges from group/period position (Page 1) and Page 3’s Selected Ions list, as in Sample Cluster 1 Q1: Smartphone Chemistry comparing K+ and Na+ ions in aluminosilicate glass. |
| 2011 Table B (Physical Constants for Water) | Specific heat capacity of H2O(ℓ) (4.18 J/g·K), heat of fusion (334 J/g), and heat of vaporization (2260 J/g). | Page 4 gives q = mcΔT, q = mHf, and q = mHv; the specific heat or phase-change constant for the substance being studied is supplied in the cluster table (such as brick, asphalt, and concrete in June 2026 Cluster 5: Urban Heat Islands). |
| 2011 Tables G, H, I & J | Solubility curves, vapor-pressure curves, heats of reaction (ΔH), and the activity series of metals/halogens. | Embedded directly in the cluster stimulus—such as CO2 beverage solubility data in June 2026 Cluster 2: Chemistry of Beverages, essential-oil volatility in August 2026 Cluster 9: Get a Whiff of That!, and catalytic converter energetics in August 2026 Cluster 8: Catalytic Converter in Cars. |
| 2011 Tables K, L, M, N & O | Common acids and bases, acid-base indicator pH ranges/colors, selected radioisotopes (half-lives and decay modes), and nuclear symbols. | Nuclear symbols remain on Page 3; custom indicator tables are provided inside the cluster in Sample Cluster 2: A Profitable Blueberry Field and August 2026 Cluster 6: Pool Water Chemistry, and radioisotope decay series appear in the stimulus of June 2026 Cluster 1: How Glow Became Gloom and August 2026 Cluster 10: Parade of Balloons. |
| 2011 Tables P, Q & R (Organic Chemistry) | Organic prefixes (meth– through dec–), homologous series of hydrocarbons, and organic functional groups. | Polymer repeating units and molecular structures are drawn directly in the cluster figures, as in June 2026 Cluster 4: The Accidental Development of Breathable, Waterproof Fabric and June 2026 Cluster 8: Chip Bag: PFAS vs PLA Plastics. |
Still unsure which reference booklet your class uses? Check whether you are taking the new or legacy Chemistry Regents →
Four reference-table habits that prevent common point losses
- Use 273.15 for Kelvin conversions on Page 4. Page 4 defines
K = °C + 273.15and STP as273.15 K and 1 atm(the 2011 tables rounded to 273 K). Official rating guides accept standard significant-figure rounding, but always check whether the cluster supplies temperatures to the hundredths place. - Watch the rearranged molarity equation (n = MV). Page 4 lists molarity as
n = MV(moles = molarity × liters of solution) rather thanM = mol/L. Convert milliliters to liters using themilli (10−3)prefix before solving for moles or concentration. - Use F ∝ q1q2/d2 to justify bonding and periodic trend explanations. The qualitative Coulomb’s law model on Page 4 backs up constructed-response explanations comparing attraction between nuclei and valence electrons or between oppositely charged ions based on charge magnitude (q) and distance (d).
- Filter out unused columns in cluster tables before calculating. Official clusters frequently include realistic background columns—such as unused bottling measurements in June 2026 Q8: Chemistry of Beverages or an untested ionization-energy column in August 2026 Q46: Safe Transport of Drinking Water. Identify the exact variable required by the Page 4 equation before substituting numbers.
Frequently asked questions
- How many pages are in the 2025 Chemistry Regents Reference Tables?
- The 2025 Edition Reference Tables for Physical Science: Chemistry is 4 pages long: Page 1 is the Periodic Table of the Elements (printing full element names), Page 2 is The Electromagnetic Spectrum, Page 3 lists Symbols Used in Nuclear Chemistry and Selected Ions Forming Aqueous Solutions, and Page 4 lists Mathematical and Computational Models, Mathematical Relationships, Selected Units, and Selected Metric Prefixes.
- Were Table S, Table G, and Table M removed from the 2025 Chemistry Regents Reference Tables?
- Yes. Eighteen tables from the 2011 edition—including Table S (electronegativity, first ionization energy, atomic radius), Table B (water heat constants), Table G (solubility curves), Table H (vapor pressure), Table I (heats of reaction), Table J (activity series), Tables K–M (acids, bases, indicators), Table N (radioisotopes), and Tables P–R (organic chemistry)—were removed. Specific constants and experimental data are supplied inside the cluster stimulus when needed, while qualitative periodic trends are tested as course knowledge.
- Does the 2025 Periodic Table include electron configurations or oxidation states?
- No. Each element cell on Page 1 of the 2025 Edition prints only the atomic number, element symbol, full element name, and average atomic mass to two decimal places (CRC 104th Edition). Students determine valence electrons and ion charges from group/period placement and Page 3's Selected Ions list.