Chemistry CBE — Practice Tests & Mock Exams

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.

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.

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.

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.

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.

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.

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.