The Praxis II Series Chemistry Content Knowledge Exam (0245 and 5245) is taken by candidates interested in teaching secondary school chemistry. The exam is comprised of 100 multiple choice questions:23 questions cover periodicity and reactivity, chemical reactions, biochemistry, and organic chemistry; 16 questions cover matter and energy, heat, thermodynamics and thermo chemistry; 14 questions cover nomenclature, the mole, chemical bonding, and geometry; 14 questions cover mathematics, measurement, and data management, laboratory procedures and safety; 12 questions cover solutions and solubility, acid/base chemistry; 11 questions cover history and nature of science, science, technology and social perspectives; 10 questions cover atomic and nuclear structure. Candidates have two hours to complete the exam.
The Periodicity and Reactivity, Chemical Reactions, Biochemistry and Organic Chemistry section of the exam covers patterns of periodicity in electron configurations, periodicity with types of bonds, chemical reactions, features of atoms, organic chemistry and biological chemistry.
The Matter and Energy, Heat, Thermodynamics, and Thermochemistry section of the exam covers types, arrangement, features, and preservation of matter and/or energy; measurements of temperature; the effect of thermal energy on matter; the conduction of thermal energy; laws of molecular kinetics, gases, and thermodynamics; and thermo-chemistry.
The Nomenclature section of the exam covers the naming system of molecular and ionic compounds, the naming of organic compounds among functional groups, the mole as part of chemical composition, chemical formulas, chemical bonding, and molecular biology.
The Mathematics section of the exam covers measuring and interpreting data, appropriate laboratory use of substances and tools, safety regarding chemical mixtures, and disposal of chemical materials.
The Solutions, Acids and Bases section of the exam covers vocabulary, types of solutions, impacts of solubility, chemical concentration, and the chemistry of acids and bases.
The History and Nature of Science section of the exam covers the scientific process, formulation of experiments, science history, and the connection between society and science.
The Atomic and Nuclear Structure section of the exam covers atomic structure, the arrangement of electrons, and nuclear reactions.