ORELA Chemistry (NT321) study guide
ORELA Chemistry (NT321) · Work through your exam, one topic at a time.
The ORELA Chemistry assessment (test code NT321) is a National Evaluation Series™ educator licensure test offered through the Oregon Educator Licensure Assessments program. It is intended for prospective Oregon teachers who need to demonstrate chemistry content knowledge for licensure, and it is delivered as a computer-based test (CBT) at test centers in Oregon and nationwide, or as an online-proctored test taken remotely, including from home. The ORELA Chemistry (NT321) study guide has 5 sections and about 1,735 words.
01Subarea I - Nature of Science and Measurement
Subarea I tests how well you can design, execute, and interpret chemistry investigations: SI measurement, significant figures, uncertainty, data analysis, and safety. The exam favors reasoning over memorized steps, so expect to decide which quantity limits precision and whether an error is random or systematic.
335 words, about 2 min02Subarea II - Matter and Atomic Structure
Subarea II covers classification of matter, atomic models, quantum numbers, electron configuration, periodic trends, and nuclear change. Questions often ask you to connect a model or configuration to observable properties.
342 words, about 2 min03Subarea III - Chemical Bonding and Molecular Structure
Subarea III tests bonding models and how structure determines properties: ionic, covalent, metallic, Lewis structures, VSEPR, hybridization, polarity, and intermolecular forces. Ionic bonds transfer electrons between metals and nonmetals; covalent bonds share electrons, usually between nonmetals.
342 words, about 2 min04Subarea IV - Chemical Reactions and Stoichiometry
Subarea IV covers reaction types, balancing, the mole concept, stoichiometric calculations, solutions, acid–base neutralization, and redox. The exam rewards clear unit tracking and correct identification of the limiting reagent.
356 words, about 2 min05Subarea V - Thermodynamics, Kinetics, and Equilibrium
Subarea V covers energy changes, reaction rates, and equilibrium, including calorimetry, Hess’s law, Gibbs free energy, collision theory, Le Chatelier’s principle, and equilibrium constants. Enthalpy change ΔH is heat at constant pressure.
360 words, about 2 min