Chemistry Regents — Practice Tests & Mock Exams
Atomic structure, bonding, reactions, stoichiometry, gas laws, solutions, and thermochemistry. Aligned to the NYS Physical Setting/Chemistry Regents standards.
Semester A
50 questions · 180 min · 80% to pass
Semester B
50 questions · 180 min · 80% to pass
Cramming right before the test feels productive but hides your real gaps. A full-length mock now diagnoses which NYS categories you're weakest in — so you can focus your study only where it counts. Learning science is clear: retrieval practice and spaced study beat last-minute cramming. Starting earlier is the higher-scoring path.
Learn the Concepts
Visual lessons that build Chemistry from first principles — diagrams, worked examples, embedded practice.
Try a Sample Chemistry Question
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What's on the Chemistry Regents
Every NYS standard the official exam covers — and the exact topics our practice questions target.
- 1A-3FScientific Processes and Methods
- 4A-4DMatter
- 5A-5CPeriodic Table and Periodicity
- 6A-6EAtoms
- 7A-7EChemical Bonds
- 8A-8FThe Mole and Stoichiometry
- 9A-9DSolutions
- 10A-10DGases
- 11A-11DThermochemistry
- 12A-12CNuclear Chemistry
Chemistry Regents — Common Questions
What topics are on the Chemistry Regents?
The Chemistry Regents covers scientific processes and lab safety, atomic structure, periodic table and periodicity, chemical bonding, chemical reactions and equations, stoichiometry, gas laws and solutions, and thermochemistry with introductory nuclear chemistry. Each NYS §112.35 reporting category is sampled across Semester A and B mock exams.
How hard is the Chemistry Regents?
Expect a mix of conceptual recall (atomic structure, bonding types, periodic trends) and quantitative problem-solving (mole-to-mass conversions, stoichiometry, gas laws, solution molarity). Roughly 30–40% of the exam is calculation-heavy. Students hitting 80%+ on our mock exams typically pass on their first attempt.
How long is the Chemistry Regents?
The exam runs about 3 hours with roughly 50–55 questions. Our mock exams match this length and include the same balance of qualitative concept questions, diagram-based questions (atomic models, phase diagrams), and quantitative problem-solving so your pacing practice is accurate.
Do I need to memorize the periodic table?
Not the whole thing — but you need fluency with the patterns. The Regents typically provides a periodic table reference on the exam, so the focus is reading it correctly: knowing where metals/nonmetals/metalloids sit, recognizing trends in atomic radius, ionization energy, and electronegativity, and predicting common ion charges from group placement.
Is there a lab component to the Chemistry Regents?
No physical lab, but expect questions about lab safety, equipment identification, experimental design, and data interpretation. About 15–20% of questions reward strong scientific method understanding — controls, variables, significant figures, and graph reading.
Do I need a calculator for the Chemistry Regents?
Yes — a scientific or graphing calculator is permitted, and you will need one for stoichiometry, gas-law, and molarity problems. Our practice questions are written assuming calculator access, so your prep rehearses with the same tool you'll have on exam day.
What's the passing score for the Chemistry Regents?
70% — the same as all New York State Education Department Regents exams. Aim for 85%+ on full-length mocks because the stoichiometry and gas-law calculation questions can spike in difficulty depending on which NYS standards your specific exam draws from.