Model of Bowen's Reaction Series
Two editions. The 2024 edition of the Reference Tables was used for the June 2025 through August 2026 Regents examinations, and the past questions on this site were written for it. The 2026 Revised edition applies from the January 2027 exam onward, so a student preparing for January 2027 or later should practise with the 2026 Revised edition.
This site does not copy the reference tables. Open them on the NYSED website with the links below.
The two editions side by side
2024 edition
Used for the June 2025 through August 2026 Regents examinations.
Printed title: Model of Bowen's Reaction Series
Where: page 13 of the PDF.
Shares the page with: Mineral Composition of Igneous Rocks
2026 Revised edition
Used for the January 2027 Regents examination onward.
Printed title: Model of Bowen's Reaction Series
Where: page 14 of the PDF.
Shares the page with: Mineral Composition of Igneous Rocks
What changed in the 2026 Revised edition
- Pages shifted by one because of that move: Global Tectonic Activity page 12 to 13, Model of Bowen's Reaction Series and Mineral Composition of Igneous Rocks page 13 to 14, Rock Cycle Infographic page 14 to 15. Pages 1 to 11 and 16 to 20 keep the same tables in the same order.
- Model of Bowen's Reaction Series and Mineral Composition of Igneous Rocks: same layout; 2026 changes the melting-begins temperature label from 700 to 1200 degrees C to 650 to 1400 degrees C and adds 'Pyroxene (Augite)' and 'Amphibole (Hornblende)' labels.
The editions were compared by eye on page images, so a small change in a number may be missed. The full list of differences is on the reference tables page.
Past questions that use this table
No past question on this site is tagged to this table yet.