Chemistry ties with Physics for the heaviest domain on the TExES Science 7-12 (236) exam at 20%. This manual covers all 9 official Chemistry competencies (atomic structure, gases, bonding, chemical equations, solutions, energy transformations, nuclear chemistry, oxidation-reduction, and acids/bases) — and because this is where candidates need the most repetition, every calculation-heavy competency gets a second formula-based practice question in addition to the conceptual one.

Balancing equations, stoichiometry, molarity, calorimetry, half-life, and pH calculations are all walked through step by step, with sanity checks built into every worked example so you catch your own arithmetic mistakes before test day does.

What's inside:

• All 9 official Chemistry competencies (012–020)

• Step-by-step worked examples for every formula

• Practice questions — double practice on calculation-heavy topics

• Common Mistake to Avoid call-outs

• Full answer key with rationale