100+ Free MTLE Chemistry (Grades 9-12) Practice Questions

Chemistry Research and Applications (Subtest 1)

The nature of science and scientific inquiry, designing controlled experiments, collecting and analyzing data, measurement with significant figures and dimensional analysis, laboratory safety, equipment, and Safety Data Sheets, and the role of chemistry in technology and society.

Matter and Atomic Structure (Subtest 1)

Classification of matter and physical versus chemical change, subatomic particles and isotopes, atomic models and quantum theory, electron configurations and the periodic table, periodic trends such as atomic radius, ionization energy, and electronegativity, and nuclear chemistry including radioactive decay and half-life.

Stoichiometry (Subtest 1)

The mole concept and Avogadro's number, molar mass and percent composition, empirical and molecular formulas, balancing equations and conservation of mass, mole-to-mole and mass-to-mass calculations, limiting reactants and percent yield, molar volume of gases, and molarity of solutions.

Thermodynamics (Subtest 2)

Heat versus temperature, specific heat and calorimetry, enthalpy and exothermic versus endothermic reactions, the first and second laws of thermodynamics, entropy, Gibbs free energy and spontaneity, Hess's law, bond energies, activation energy, and reaction energy diagrams.

Chemical Bonding (Subtest 2)

Ionic, covalent, and metallic bonding, the octet rule, electronegativity and bond polarity, Lewis structures and resonance, VSEPR molecular geometry, intermolecular forces including hydrogen bonding, and how bonding governs physical properties such as melting point, conductivity, and solubility.

Chemical Reactions (Subtest 2)

Classifying reactions (synthesis, decomposition, single and double replacement, combustion), oxidation-reduction and oxidation states, acids and bases, pH, neutralization and buffers, reaction rates and collision theory, catalysts, chemical equilibrium, the equilibrium constant, and Le Chatelier's principle.