Chemistry CBE — Practice Tests & Mock Exams
Atomic structure, bonding, reactions, stoichiometry, gas laws, solutions, and thermochemistry. Covers TEKS §112.35.
Semester A
50 questions · 180 min · 80% to pass
Semester B
50 questions · 180 min · 80% to pass
Passing-score thresholds vary by district (Texas state code: 80% for §28.023 acceleration, 70% for §74.24 prior-instruction credit). Confirm your specific district's threshold with your school counselor in writing.
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Visual lessons that build Chemistry from first principles — diagrams, worked examples, embedded practice.
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What's on the Chemistry CBE
Every TEKS 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 CBE — Common Questions
What topics are on the Chemistry CBE?
The Chemistry CBE 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 TEKS §112.35 reporting category is sampled across Semester A and B mock exams.
How hard is the Chemistry CBE?
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 CBE?
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 CBE 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 CBE?
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 CBE?
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 CBE?
70% — the same as all UT High School CBE exams. Aim for 85%+ on full-length mocks because the stoichiometry and gas-law calculation questions can spike in difficulty depending on which TEKS standards your specific exam draws from.
I'm not in Texas — does Chemistry prep here still apply?
Yes. Chemistry's core content — atomic structure, periodic trends, bonding, stoichiometry, gas laws, thermochemistry — is universal across high-school Chemistry curricula in all states and most international programs. Our questions are TEKS-aligned by origin but the chemistry is the same. The 70% passing line is specific to Texas CBE; in other states, the practice still builds the skills your course or AP Chemistry exam tests.