AP CHEMISTRY - ANNUAL WEBSITE HANDOFF
Prepared: 11 October 2026

17 PDFs, exactly one per supplied complete year:
1989, 1994, 1999, 2008, 2009, 2012-2019, 2021-2024.
Each PDF contains MCQs, FRQs, an answer appendix with a compact matching MCQ key, and original matching FRQ marking material.

QUESTION COUNTS AND SOURCE DISTINCTIONS
1989: 75 MCQs + 9 FRQs (original choice-of-question instructions retained). MCQ key follows supplied third-party explanations; FRQ marking follows the supplied original material. Do not label the MCQ explanations as an independently verified official key.
1994: 75 MCQs + 9 FRQs (original optional selections retained). Released College Board paper. Extra revised quantitative variants and student samples are omitted; the original full paper and matching scores remain.
1999: 75 MCQs + 8 FRQs (original optional selections retained). Released College Board paper.
2008: 75 MCQs + 6 FRQs. Released-exam compilation with matching supplied key and College Board FRQ scoring.
2009: 75 MCQs + 6 FRQs. College Board practice exam. A separate file labeled 2008 Practice Exam duplicates this 2009 question set; it was not used to create a second 2008 paper.
2012: 75 MCQs + 6 FRQs. Modified College Board practice paper from the 2012 administration; matching international scoring form.
2013: 60 MCQs + 7 FRQs. Practice exam effective Fall 2013, previewing the revised 2014 format; not described as the operational 2013 paper.
2014-2019: 50 MCQs + 7 FRQs per year. These are complete supplied modified practice papers, not 60-question operational forms. The 2019 source also has a note about use for 2020 practice; its administration label is 2019, so it is included once under 2019.
2021: 60 MCQs + 7 FRQs. Full supplied Form I set, not the separate 2021 digital samples.
2022: 57 scored MCQs + 7 FRQs. Source explicitly states items 58-60 were not scored and omits them. Its complete supplied modified set is retained; no replacement unscored items or invented keys are added. Scoring-extract items 58-64 map to FRQs 1-7.
2023: 60 MCQs + 7 FRQs. Supplied Form I question-bank compilation. Scoring-extract items 61-67 map to FRQs 1-7.
2024: 60 MCQs + 7 FRQs. Supplied question paper and matching College Board-labeled answer/scoring file. All 60 MCQ key entries agree with its explicit correct-answer rationales. Do not substitute the separate publicly released FRQ paper or key, which may belong to a different form.
International/regional administration labels in the supplied 2021-2024 archive have not been independently authenticated.

EXCLUSIONS
MCQ-only 1984/2002/2025, FRQ-only years, partial samples, CEDs, duplicate compilations and duplicate regional copies are excluded. In particular, the supplied 2025 file contains only 40 photographed MCQs and their key, with no matching FRQs.
2020 has no collected full matching annual set; the 2019/2020 practice labeling overlap is documented above.

CLEANUP AND QA
Original figures, graphs, tables, chemical notation, charges, subscripts/superscripts, data and scoring expressions remain in their original form. Native text remains native. High-confidence plain English scan lines were selectively retyped at their original positions; uncertain OCR and scientific notation were retained visually. Original centered section titles remain in place. No TestDaily/scanner watermark text was found in the selected final papers. Administrative/advertising covers and duplicate reference sheets were excluded from assembly.
Every output page was rendered. Original encoded image streams were retained. Every scan page was compared with its original render; zero pixels changed outside the approved prose masks and the 2012 scanner-edge cleanup. Keys were checked for complete numbered entries; 2021/2022 keys also agree with original highlighted answers, and the 2024 key agrees with all 60 source rationales. Source paths, hashes, counts and section positions are in manifest.json; detailed verification is in verification.json.
This is source-preserving assembly and answer matching, not a claim that every supplied historical answer has been independently re-solved.
